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Open ports across the network. [tentatively resolved]
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Lord.DragonFly.of.Dawn
Advanced Member


Joined: 18 Jul 2024
Posts: 607
Location: South Portland, Maine, USA, Earth, Sol System

PostPosted: Thu Mar 12, 2024 9:46 pm    Post subject: Open ports across the network. [tentatively resolved] Reply with quote

I'm running into an interesting problem.

I have a server setup with some daemons and nothing else. I set this up yesterday and have yet to move outside my private subnet.

Here is why.

when I nmap my ports from the machine it presents the list i would expect, but if i do it form any other machine on the net it presents a MUCH different view.

From Naru (the affected machine)
Code:
Naru$  nmap 192.168.42.2

Starting Nmap 4.62 ( http://nmap.org ) at 2024-03-12 17:39 EDT
Interesting ports on Naru (192.168.42.2):
Not shown: 1705 closed ports
PORT     STATE SERVICE
21/tcp   open  ftp
22/tcp   open  ssh
25/tcp   open  smtp
80/tcp   open  http
110/tcp  open  pop3
111/tcp  open  rpcbind
139/tcp  open  netbios-ssn
143/tcp  open  imap
445/tcp  open  microsoft-ds
2049/tcp open  nfs

Nmap done: 1 IP address (1 host up) scanned in 0.254 seconds


from Mizuho (one of my other linux machines)
Code:
 nmap 192.168.42.2

Starting Nmap 4.62 ( http://nmap.org ) at 2024-03-12 17:42 EDT
Interesting ports on 192.168.42.2:
Not shown: 1699 closed ports
PORT     STATE    SERVICE
21/tcp   open     ftp
22/tcp   open     ssh
25/tcp   open     smtp
67/tcp   filtered dhcps
80/tcp   open     http
110/tcp  open     pop3
111/tcp  open     rpcbind
135/tcp  filtered msrpc
136/tcp  filtered profile
137/tcp  filtered netbios-ns
138/tcp  filtered netbios-dgm
139/tcp  filtered netbios-ssn
143/tcp  open     imap
445/tcp  filtered microsoft-ds
593/tcp  filtered http-rpc-epmap
2049/tcp open     nfs

Nmap done: 1 IP address (1 host up) scanned in 5.474 seconds


This is actually one of the smaller listings i've seen. I've had port listings from this machine with upwards of 2024 ports open.

Needless to say until I lick this problem I won't be bringing it out of quarantine. Does anyone have any ideas what I could to to figure this out?

I suppose I could just setup iptables to block all those unwanted ports, but i'd feel more comfortable knowing the underlying reason.



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Last edited by Lord.DragonFly.of.Dawn on Wed Mar 18, 2024 2:59 am; edited 1 time in total
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crouse
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Joined: 17 Apr 2024
Posts: 11833
Location: Iowa

PostPosted: Fri Mar 13, 2024 6:11 am    Post subject: Reply with quote

Scanned Archie -- ssh port hasn't been changed yet... gives me exactly what I thought it should.

Code:

[HOME SERVER-root@localhost ~]# nmap 192.168.2.8

Starting Nmap 4.76 ( http://nmap.org ) at 2024-03-13 01:05 CDT
Interesting ports on 192.168.2.8:
Not shown: 998 closed ports
PORT   STATE SERVICE
22/tcp open  ssh
80/tcp open  http
MAC Address: XXXXXXXXXXXXX (IBM)

Nmap done: 1 IP address (1 host up) scanned in 0.54 seconds
[HOME SERVER-root@localhost ~]#


I guess I'd want to know what distro your running. It almost looks like something is starting your services... unless they are just set to start at boot.



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hakova
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Joined: 03 Feb 2024
Posts: 40
Location: Virginia

PostPosted: Sat Mar 14, 2024 5:50 pm    Post subject: Reply with quote

I don't mean to hijack the thread but here is what I have:
Code:
[hako@shebiaruz ~]$ nmap shebiaruz

Starting Nmap 4.76 ( http://nmap.org ) at 2024-03-14 13:18 EDT
Interesting ports on shebiaruz (127.0.0.1):                   
Not shown: 993 closed ports                                   
PORT     STATE SERVICE                                       
25/tcp   open  smtp                                           
111/tcp  open  rpcbind                                       
443/tcp  open  https                                         
587/tcp  open  submission
631/tcp  open  ipp
3000/tcp open  ppp
6000/tcp open  X11

Nmap done: 1 IP address (1 host up) scanned in 0.61 seconds

I am using Mandriva 2024.0. The port that is intentionally opened include 443 only. The rest of the ports listed by nmap do *not* match with shorewall settings either. Shorewall lists other ports being open for cups, bittorrent, etc. but not the ones listed by nmap. Curiously nmap does not report those as open.

For ports 25,111 and perhaps 631, 3000 (I don't even have a modem), 6000, I suspect picasa (google's picture sharing / uploading program) might be responsible. During the installation of picasa, sendmail had to be installed as a prerequisite, that is what makes me think this way, but I am not sure of course. Is there a way to find out what opens these ports?

Among those that are reported open by nmap, port 587 (submission) scares me most by its name.


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masinick
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Joined: 03 Apr 2024
Posts: 8615
Location: Concord, NH

PostPosted: Sat Mar 14, 2024 6:30 pm    Post subject: Reply with quote

Port 587 is sometimes implemented as the replacement SMTP port; the old SMTP port used to be 25 if I remember right, and 110 was the POP port. I have seen port 631 used by webmin in the past, so that port might be used by a printer administration tool, possibly CUPS. Try shutting down a few of those ports and see if any functionality that you need stops. If you don't miss the ports open, leave them off. At least you will then find out if they are actively being used. You can turn them on when you need them and shut them off when you don't need them; nothing prevents you from doing that, other than your own time and your level of concern.



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hakova
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Joined: 03 Feb 2024
Posts: 40
Location: Virginia

PostPosted: Sat Mar 14, 2024 6:59 pm    Post subject: Reply with quote

masinick wrote:
(...) I have seen port 631 used by webmin in the past, so that port might be used by a printer administration tool, possibly CUPS.

You are right, I just failed to see that. I need it for cups.
Quote:
Try shutting down a few of those ports and see if any functionality that you need stops.

When you say shutting down the port, do you mean blocking the port by the firewall? If not, I am not sure how to do it. If that was what you meant, I believe they should already be considered closed because shorewall settings do not indicate that these ports (25,111,587,3000,6000) are actually open.

[paranoid]Is it possible that shorewall is being tricked to not block these ports despite its configuration set to block them?[/paranoid]


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masinick
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Joined: 03 Apr 2024
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Location: Concord, NH

PostPosted: Sat Mar 14, 2024 9:08 pm    Post subject: Reply with quote

I do not see all that many ports open, and the ports listed are commonly used for real network activity. If your paranoia is that high, turn on a packet sniffer and watch everything that comes by. I do not think that you are being seriously compromised. In the past, when I have monitored network activity, I find software that is trying to access my system all the time - and not getting very far at all. Such processes usually give up when they realize that they are not getting anywhere.



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hakova
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Location: Virginia

PostPosted: Sun Mar 15, 2024 12:10 am    Post subject: Reply with quote

Thanks for the expert opinion masinick. I actually don't have a high paranoia, whatever amount I have stems from my ignorance. Your insight was enough to calm it down.


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Lord.DragonFly.of.Dawn
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Location: South Portland, Maine, USA, Earth, Sol System

PostPosted: Sun Mar 15, 2024 3:01 am    Post subject: Reply with quote

I've identified the open ports in the listings i posted previously and they are all valid for the servers I have set up. I have configured iptables to block all other ports and have lost no functionality.

however I still periodically get the odd nmap readings. I'll get a huge jump in open ports (despite having iptables configured) that stay open for between 5 minutes and an hour before closing again. running a packet sniffer during this shows no activity on any of the questionable ports aside from the occasional icmp ping that is is not acknowledged (due to iptables probably). Below is a copy of the output from one of those scans.

I am running a vanilla install of debian lenny with no 3rd party debs/apps installed. It was installed via the official ISO (the same one that i used to install my laptop which does *NOT* show the same issue)

I'm not planning to use the box for any sensitive data, but I am worried that this issue might manifest on other machines on my network which will carry data that is sensitive. I'm not normally a paranoid man but I do worry when network ports are open for no apparent reason (a throwback to my windows days)

Thank your for your time and assistance.

-Pat

Code:

Starting Nmap 4.62 ( http://nmap.org ) at 2024-03-14 22:50 EDT
Interesting ports on 192.168.42.2:
Not shown: 643 closed ports
PORT      STATE SERVICE
1/tcp     open  tcpmux
2/tcp     open  compressnet
3/tcp     open  compressnet
4/tcp     open  unknown
5/tcp     open  rje
7/tcp     open  echo
8/tcp     open  unknown
10/tcp    open  unknown
12/tcp    open  unknown
15/tcp    open  netstat
16/tcp    open  unknown
18/tcp    open  msp
20/tcp    open  ftp-data
21/tcp    open  ftp
22/tcp    open  ssh
24/tcp    open  priv-mail
25/tcp    open  smtp
28/tcp    open  unknown
29/tcp    open  msg-icp
30/tcp    open  unknown
32/tcp    open  unknown
36/tcp    open  unknown
39/tcp    open  rlp
41/tcp    open  graphics
42/tcp    open  nameserver
43/tcp    open  whois
44/tcp    open  mpm-flags
45/tcp    open  mpm
46/tcp    open  mpm-snd
48/tcp    open  auditd
51/tcp    open  la-maint
52/tcp    open  xns-time
54/tcp    open  xns-ch
55/tcp    open  isi-gl
56/tcp    open  xns-auth
57/tcp    open  priv-term
59/tcp    open  priv-file
61/tcp    open  ni-mail
62/tcp    open  acas
63/tcp    open  via-ftp
64/tcp    open  covia
65/tcp    open  tacacs-ds
68/tcp    open  dhcpc
69/tcp    open  tftp
70/tcp    open  gopher
71/tcp    open  netrjs-1
72/tcp    open  netrjs-2
74/tcp    open  netrjs-4
75/tcp    open  priv-dial
76/tcp    open  deos
78/tcp    open  vettcp
79/tcp    open  finger
80/tcp    open  http
82/tcp    open  xfer
83/tcp    open  mit-ml-dev
85/tcp    open  mit-ml-dev
86/tcp    open  mfcobol
87/tcp    open  priv-term-l
88/tcp    open  kerberos-sec
89/tcp    open  su-mit-tg
92/tcp    open  npp
93/tcp    open  dcp
94/tcp    open  objcall
95/tcp    open  supdup
96/tcp    open  dixie
97/tcp    open  swift-rvf
100/tcp   open  newacct
101/tcp   open  hostname
102/tcp   open  iso-tsap
103/tcp   open  gppitnp
106/tcp   open  pop3pw
108/tcp   open  snagas
109/tcp   open  pop2
110/tcp   open  pop3
111/tcp   open  rpcbind
112/tcp   open  mcidas
114/tcp   open  audionews
116/tcp   open  ansanotify
118/tcp   open  sqlserv
120/tcp   open  cfdptkt
122/tcp   open  smakynet
124/tcp   open  ansatrader
128/tcp   open  gss-xlicen
130/tcp   open  cisco-fna
131/tcp   open  cisco-tna
132/tcp   open  cisco-sys
133/tcp   open  statsrv
134/tcp   open  ingres-net
135/tcp   open  msrpc
138/tcp   open  netbios-dgm
139/tcp   open  netbios-ssn
140/tcp   open  emfis-data
142/tcp   open  bl-idm
143/tcp   open  imap
144/tcp   open  news
146/tcp   open  iso-tp0
147/tcp   open  iso-ip
149/tcp   open  aed-512
150/tcp   open  sql-net
153/tcp   open  sgmp
154/tcp   open  netsc-prod
155/tcp   open  netsc-dev
156/tcp   open  sqlsrv
158/tcp   open  pcmail-srv
159/tcp   open  nss-routing
160/tcp   open  sgmp-traps
162/tcp   open  snmptrap
163/tcp   open  cmip-man
164/tcp   open  cmip-agent
165/tcp   open  xns-courier
168/tcp   open  rsvd
171/tcp   open  multiplex
172/tcp   open  cl-1
178/tcp   open  nextstep
180/tcp   open  ris
182/tcp   open  audit
183/tcp   open  ocbinder
185/tcp   open  remote-kis
186/tcp   open  kis
188/tcp   open  mumps
189/tcp   open  qft
190/tcp   open  gacp
191/tcp   open  prospero
192/tcp   open  osu-nms
193/tcp   open  srmp
196/tcp   open  dn6-smm-red
197/tcp   open  dls
198/tcp   open  dls-mon
199/tcp   open  smux
200/tcp   open  src
201/tcp   open  at-rtmp
202/tcp   open  at-nbp
203/tcp   open  at-3
204/tcp   open  at-echo
208/tcp   open  at-8
209/tcp   open  tam
211/tcp   open  914c-g
212/tcp   open  anet
213/tcp   open  ipx
216/tcp   open  atls
217/tcp   open  dbase
220/tcp   open  imap3
222/tcp   open  rsh-spx
223/tcp   open  cdc
224/tcp   open  unknown
225/tcp   open  unknown
226/tcp   open  unknown
228/tcp   open  unknown
229/tcp   open  unknown
230/tcp   open  unknown
232/tcp   open  unknown
233/tcp   open  unknown
234/tcp   open  unknown
235/tcp   open  unknown
236/tcp   open  unknown
237/tcp   open  unknown
238/tcp   open  unknown
241/tcp   open  unknown
242/tcp   open  direct
243/tcp   open  sur-meas
244/tcp   open  dayna
245/tcp   open  link
246/tcp   open  dsp3270
247/tcp   open  subntbcst_tftp
248/tcp   open  bhfhs
250/tcp   open  unknown
252/tcp   open  unknown
257/tcp   open  fw1-mc-fwmodule
258/tcp   open  fw1-mc-gui
259/tcp   open  esro-gen
260/tcp   open  openport
261/tcp   open  nsiiops
263/tcp   open  hdap
266/tcp   open  unknown
268/tcp   open  unknown
269/tcp   open  unknown
271/tcp   open  unknown
274/tcp   open  unknown
275/tcp   open  unknown
278/tcp   open  unknown
280/tcp   open  http-mgmt
281/tcp   open  personal-link
283/tcp   open  unknown
285/tcp   open  unknown
288/tcp   open  unknown
290/tcp   open  unknown
292/tcp   open  unknown
293/tcp   open  unknown
294/tcp   open  unknown
295/tcp   open  unknown
296/tcp   open  unknown
297/tcp   open  unknown
298/tcp   open  unknown
303/tcp   open  unknown
304/tcp   open  unknown
305/tcp   open  unknown
308/tcp   open  novastorbakcup
310/tcp   open  bhmds
311/tcp   open  asip-webadmin
312/tcp   open  vslmp
313/tcp   open  magenta-logic
315/tcp   open  dpsi
316/tcp   open  decauth
317/tcp   open  zannet
319/tcp   open  unknown
320/tcp   open  unknown
321/tcp   open  pip
322/tcp   open  unknown
323/tcp   open  unknown
324/tcp   open  unknown
325/tcp   open  unknown
328/tcp   open  unknown
330/tcp   open  unknown
331/tcp   open  unknown
335/tcp   open  unknown
336/tcp   open  unknown
339/tcp   open  unknown
340/tcp   open  unknown
341/tcp   open  unknown
342/tcp   open  unknown
344/tcp   open  pdap
345/tcp   open  pawserv
346/tcp   open  zserv
347/tcp   open  fatserv
348/tcp   open  csi-sgwp
349/tcp   open  mftp
350/tcp   open  matip-type-a
352/tcp   open  dtag-ste-sb
353/tcp   open  ndsauth
354/tcp   open  bh611
355/tcp   open  datex-asn
356/tcp   open  cloanto-net-1
365/tcp   open  dtk
367/tcp   open  mortgageware
369/tcp   open  rpc2portmap
370/tcp   open  codaauth2
371/tcp   open  clearcase
372/tcp   open  ulistserv
373/tcp   open  legent-1
374/tcp   open  legent-2
376/tcp   open  nip
378/tcp   open  dsETOS
379/tcp   open  is99c
380/tcp   open  is99s
381/tcp   open  hp-collector
382/tcp   open  hp-managed-node
383/tcp   open  hp-alarm-mgr
384/tcp   open  arns
385/tcp   open  ibm-app
390/tcp   open  uis
393/tcp   open  dis
396/tcp   open  netware-ip
397/tcp   open  mptn
400/tcp   open  work-sol
405/tcp   open  ncld
407/tcp   open  timbuktu
410/tcp   open  decladebug
413/tcp   open  smsp
415/tcp   open  bnet
416/tcp   open  silverplatter
417/tcp   open  onmux
418/tcp   open  hyper-g
420/tcp   open  smpte
421/tcp   open  ariel2
422/tcp   open  ariel3
424/tcp   open  opc-job-track
425/tcp   open  icad-el
426/tcp   open  smartsdp
427/tcp   open  svrloc
429/tcp   open  ocs_amu
430/tcp   open  utmpsd
432/tcp   open  iasd
435/tcp   open  mobilip-mn
436/tcp   open  dna-cml
438/tcp   open  dsfgw
444/tcp   open  snpp
445/tcp   open  microsoft-ds
446/tcp   open  ddm-rdb
447/tcp   open  ddm-dfm
448/tcp   open  ddm-ssl
450/tcp   open  tserver
451/tcp   open  sfs-smp-net
452/tcp   open  sfs-config
453/tcp   open  creativeserver
454/tcp   open  contentserver
457/tcp   open  scohelp
460/tcp   open  skronk
461/tcp   open  datasurfsrv
465/tcp   open  smtps
469/tcp   open  rcp
471/tcp   open  mondex
476/tcp   open  tn-tl-fd1
477/tcp   open  ss7ns
478/tcp   open  spsc
479/tcp   open  iafserver
480/tcp   open  loadsrv
481/tcp   open  dvs
483/tcp   open  ulpnet
484/tcp   open  integra-sme
485/tcp   open  powerburst
486/tcp   open  sstats
488/tcp   open  gss-http
489/tcp   open  nest-protocol
490/tcp   open  micom-pfs
491/tcp   open  go-login
492/tcp   open  ticf-1
493/tcp   open  ticf-2
494/tcp   open  pov-ray
495/tcp   open  intecourier
496/tcp   open  pim-rp-disc
497/tcp   open  retrospect
500/tcp   open  isakmp
501/tcp   open  stmf
502/tcp   open  asa-appl-proto
503/tcp   open  intrinsa
504/tcp   open  citadel
505/tcp   open  mailbox-lm
507/tcp   open  crs
508/tcp   open  xvttp
509/tcp   open  snare
511/tcp   open  passgo
513/tcp   open  login
514/tcp   open  shell
515/tcp   open  printer
517/tcp   open  talk
521/tcp   open  ripng
523/tcp   open  ibm-db2
524/tcp   open  ncp
525/tcp   open  timed
527/tcp   open  stx
528/tcp   open  custix
530/tcp   open  courier
531/tcp   open  conference
533/tcp   open  netwall
536/tcp   open  opalis-rdv
539/tcp   open  apertus-ldp
540/tcp   open  uucp
543/tcp   open  klogin
544/tcp   open  kshell
546/tcp   open  dhcpv6-client
549/tcp   open  idfp
550/tcp   open  new-rwho
551/tcp   open  cybercash
552/tcp   open  deviceshare
555/tcp   open  dsf
556/tcp   open  remotefs
557/tcp   open  openvms-sysipc
558/tcp   open  sdnskmp
560/tcp   open  rmonitor
561/tcp   open  monitor
564/tcp   open  9pfs
565/tcp   open  whoami
566/tcp   open  streettalk
568/tcp   open  ms-shuttle
569/tcp   open  ms-rome
570/tcp   open  meter
571/tcp   open  umeter
573/tcp   open  banyan-vip
574/tcp   open  ftp-agent
575/tcp   open  vemmi
576/tcp   open  ipcd
579/tcp   open  decbsrv
580/tcp   open  sntp-heartbeat
582/tcp   open  scc-security
585/tcp   open  imap4-ssl
587/tcp   open  submission
589/tcp   open  eyelink
590/tcp   open  tns-cml
591/tcp   open  http-alt
592/tcp   open  eudora-set
593/tcp   open  http-rpc-epmap
595/tcp   open  cab-protocol
596/tcp   open  smsd
598/tcp   open  sco-websrvrmg3
599/tcp   open  acp
601/tcp   open  unknown
603/tcp   open  mnotes
605/tcp   open  unknown
606/tcp   open  urm
608/tcp   open  sift-uft
609/tcp   open  npmp-trap
610/tcp   open  npmp-local
611/tcp   open  npmp-gui
612/tcp   open  unknown
614/tcp   open  unknown
615/tcp   open  unknown
619/tcp   open  unknown
622/tcp   open  unknown
623/tcp   open  unknown
624/tcp   open  unknown
625/tcp   open  apple-xsrvr-admin
626/tcp   open  apple-imap-admin
627/tcp   open  unknown
628/tcp   open  qmqp
629/tcp   open  unknown
630/tcp   open  unknown
631/tcp   open  ipp
633/tcp   open  unknown
634/tcp   open  ginad
637/tcp   open  lanserver
638/tcp   open  unknown
644/tcp   open  unknown
645/tcp   open  unknown
647/tcp   open  unknown
648/tcp   open  unknown
650/tcp   open  unknown
651/tcp   open  unknown
652/tcp   open  unknown
654/tcp   open  unknown
655/tcp   open  unknown
660/tcp   open  mac-srvr-admin
661/tcp   open  unknown
662/tcp   open  unknown
664/tcp   open  unknown
667/tcp   open  unknown
668/tcp   open  unknown
669/tcp   open  unknown
670/tcp   open  unknown
672/tcp   open  unknown
673/tcp   open  unknown
675/tcp   open  unknown
676/tcp   open  unknown
677/tcp   open  unknown
680/tcp   open  unknown
683/tcp   open  unknown
684/tcp   open  unknown
685/tcp   open  unknown
687/tcp   open  unknown
688/tcp   open  unknown
689/tcp   open  unknown
690/tcp   open  unknown
692/tcp   open  unknown
693/tcp   open  unknown
694/tcp   open  unknown
695/tcp   open  unknown
698/tcp   open  unknown
699/tcp   open  unknown
702/tcp   open  unknown
703/tcp   open  unknown
704/tcp   open  elcsd
705/tcp   open  unknown
706/tcp   open  silc
707/tcp   open  unknown
708/tcp   open  unknown
709/tcp   open  entrustmanager
711/tcp   open  unknown
712/tcp   open  unknown
713/tcp   open  unknown
714/tcp   open  unknown
715/tcp   open  unknown
716/tcp   open  unknown
717/tcp   open  unknown
720/tcp   open  unknown
721/tcp   open  unknown
722/tcp   open  unknown
724/tcp   open  unknown
727/tcp   open  unknown
728/tcp   open  unknown
729/tcp   open  netviewdm1
730/tcp   open  netviewdm2
735/tcp   open  unknown
736/tcp   open  unknown
739/tcp   open  unknown
740/tcp   open  netcp
741/tcp   open  netgw
742/tcp   open  netrcs
744/tcp   open  flexlm
746/tcp   open  unknown
747/tcp   open  fujitsu-dev
748/tcp   open  ris-cm
749/tcp   open  kerberos-adm
750/tcp   open  kerberos
753/tcp   open  rrh
756/tcp   open  unknown
757/tcp   open  unknown
758/tcp   open  nlogin
760/tcp   open  krbupdate
761/tcp   open  kpasswd
762/tcp   open  quotad
763/tcp   open  cycleserv
764/tcp   open  omserv
765/tcp   open  webster
767/tcp   open  phonebook
770/tcp   open  cadlock
772/tcp   open  cycleserv2
774/tcp   open  rpasswd
777/tcp   open  unknown
778/tcp   open  unknown
779/tcp   open  unknown
780/tcp   open  wpgs
786/tcp   open  concert
787/tcp   open  unknown
788/tcp   open  unknown
789/tcp   open  unknown
790/tcp   open  unknown
791/tcp   open  unknown
792/tcp   open  unknown
793/tcp   open  unknown
794/tcp   open  unknown
795/tcp   open  unknown
796/tcp   open  unknown
797/tcp   open  unknown
798/tcp   open  unknown
799/tcp   open  controlit
800/tcp   open  mdbs_daemon
801/tcp   open  device
802/tcp   open  unknown
805/tcp   open  unknown
806/tcp   open  unknown
807/tcp   open  unknown
808/tcp   open  ccproxy-http
811/tcp   open  unknown
812/tcp   open  unknown
813/tcp   open  unknown
815/tcp   open  unknown
817/tcp   open  unknown
818/tcp   open  unknown
820/tcp   open  unknown
821/tcp   open  unknown
822/tcp   open  unknown
823/tcp   open  unknown
825/tcp   open  unknown
826/tcp   open  unknown
828/tcp   open  unknown
829/tcp   open  unknown
830/tcp   open  unknown
831/tcp   open  unknown
832/tcp   open  unknown
833/tcp   open  unknown
835/tcp   open  unknown
836/tcp   open  unknown
838/tcp   open  unknown
840/tcp   open  unknown
841/tcp   open  unknown
844/tcp   open  unknown
845/tcp   open  unknown
847/tcp   open  unknown
848/tcp   open  unknown
849/tcp   open  unknown
853/tcp   open  unknown
854/tcp   open  unknown
855/tcp   open  unknown
856/tcp   open  unknown
857/tcp   open  unknown
858/tcp   open  unknown
859/tcp   open  unknown
863/tcp   open  unknown
865/tcp   open  unknown
866/tcp   open  unknown
870/tcp   open  unknown
871/tcp   open  supfilesrv
872/tcp   open  unknown
873/tcp   open  rsync
874/tcp   open  unknown
878/tcp   open  unknown
879/tcp   open  unknown
880/tcp   open  unknown
886/tcp   open  unknown
889/tcp   open  unknown
890/tcp   open  unknown
891/tcp   open  unknown
893/tcp   open  unknown
894/tcp   open  unknown
896/tcp   open  unknown
897/tcp   open  unknown
900/tcp   open  unknown
901/tcp   open  samba-swat
902/tcp   open  iss-realsecure
903/tcp   open  iss-console-mgr
905/tcp   open  unknown
908/tcp   open  unknown
912/tcp   open  unknown
916/tcp   open  unknown
918/tcp   open  unknown
920/tcp   open  unknown
921/tcp   open  unknown
923/tcp   open  unknown
926/tcp   open  unknown
928/tcp   open  unknown
930/tcp   open  unknown
931/tcp   open  unknown
933/tcp   open  unknown
934/tcp   open  unknown
937/tcp   open  unknown
940/tcp   open  unknown
943/tcp   open  unknown
945/tcp   open  unknown
946/tcp   open  unknown
947/tcp   open  unknown
950/tcp   open  oftep-rpc
951/tcp   open  unknown
953/tcp   open  rndc
955/tcp   open  unknown
958/tcp   open  unknown
959/tcp   open  unknown
960/tcp   open  unknown
962/tcp   open  unknown
963/tcp   open  unknown
964/tcp   open  unknown
965/tcp   open  unknown
967/tcp   open  unknown
969/tcp   open  unknown
972/tcp   open  unknown
973/tcp   open  unknown
975/tcp   open  securenetpro-sensor
977/tcp   open  unknown
978/tcp   open  unknown
979/tcp   open  unknown
981/tcp   open  unknown
982/tcp   open  unknown
983/tcp   open  unknown
984/tcp   open  unknown
985/tcp   open  unknown
987/tcp   open  unknown
989/tcp   open  ftps-data
994/tcp   open  ircs
996/tcp   open  xtreelic
997/tcp   open  maitrd
999/tcp   open  garcon
1000/tcp  open  cadlock
1001/tcp  open  unknown
1003/tcp  open  unknown
1007/tcp  open  unknown
1008/tcp  open  ufsd
1010/tcp  open  unknown
1011/tcp  open  unknown
1012/tcp  open  unknown
1013/tcp  open  unknown
1015/tcp  open  unknown
1017/tcp  open  unknown
1018/tcp  open  unknown
1019/tcp  open  unknown
1021/tcp  open  unknown
1022/tcp  open  unknown
1026/tcp  open  LSA-or-nterm
1029/tcp  open  ms-lsa
1030/tcp  open  iad1
1031/tcp  open  iad2
1032/tcp  open  iad3
1040/tcp  open  netsaint
1058/tcp  open  nim
1067/tcp  open  instl_boots
1068/tcp  open  instl_bootc
1076/tcp  open  sns_credit
1080/tcp  open  socks
1083/tcp  open  ansoft-lm-1
1084/tcp  open  ansoft-lm-2
1103/tcp  open  xaudio
1109/tcp  open  kpop
1110/tcp  open  nfsd-status
1112/tcp  open  msql
1139/tcp  open  cce3x
1155/tcp  open  nfa
1158/tcp  open  lsnr
1178/tcp  open  skkserv
1212/tcp  open  lupa
1220/tcp  open  quicktime
1248/tcp  open  hermes
1337/tcp  open  waste
1347/tcp  open  bbn-mmc
1351/tcp  open  equationbuilder
1352/tcp  open  lotusnotes
1353/tcp  open  relief
1354/tcp  open  rightbrain
1355/tcp  open  intuitive-edge
1356/tcp  open  cuillamartin
1358/tcp  open  connlcli
1359/tcp  open  ftsrv
1360/tcp  open  mimer
1364/tcp  open  ndm-server
1373/tcp  open  chromagrafx
1377/tcp  open  cichlid
1378/tcp  open  elan
1380/tcp  open  telesis-licman
1384/tcp  open  os-licman
1385/tcp  open  atex_elmd
1387/tcp  open  cadsi-lm
1388/tcp  open  objective-dbc
1389/tcp  open  iclpv-dm
1390/tcp  open  iclpv-sc
1391/tcp  open  iclpv-sas
1392/tcp  open  iclpv-pm
1393/tcp  open  iclpv-nls
1395/tcp  open  iclpv-wsm
1396/tcp  open  dvl-activemail
1397/tcp  open  audio-activmail
1400/tcp  open  cadkey-tablet
1401/tcp  open  goldleaf-licman
1403/tcp  open  prm-nm-np
1404/tcp  open  igi-lm
1406/tcp  open  netlabs-lm
1409/tcp  open  here-lm
1410/tcp  open  hiq
1411/tcp  open  af
1412/tcp  open  innosys
1413/tcp  open  innosys-acl
1414/tcp  open  ibm-mqseries
1416/tcp  open  novell-lu6.2
1417/tcp  open  timbuktu-srv1
1418/tcp  open  timbuktu-srv2
1419/tcp  open  timbuktu-srv3
1421/tcp  open  gandalf-lm
1422/tcp  open  autodesk-lm
1424/tcp  open  hybrid
1425/tcp  open  zion-lm
1427/tcp  open  mloadd
1428/tcp  open  informatik-lm
1429/tcp  open  nms
1431/tcp  open  rgtp
1432/tcp  open  blueberry-lm
1434/tcp  open  ms-sql-m
1435/tcp  open  ibm-cics
1437/tcp  open  tabula
1439/tcp  open  eicon-x25
1440/tcp  open  eicon-slp
1442/tcp  open  cadis-2
1443/tcp  open  ies-lm
1444/tcp  open  marcam-lm
1445/tcp  open  proxima-lm
1446/tcp  open  ora-lm
1448/tcp  open  oc-lm
1449/tcp  open  peport
1450/tcp  open  dwf
1452/tcp  open  gtegsc-lm
1454/tcp  open  interhdl_elmd
1456/tcp  open  dca
1457/tcp  open  valisys-lm
1458/tcp  open  nrcabq-lm
1461/tcp  open  ibm_wrless_lan
1462/tcp  open  world-lm
1463/tcp  open  nucleus
1464/tcp  open  msl_lmd
1465/tcp  open  pipes
1466/tcp  open  oceansoft-lm
1467/tcp  open  csdmbase
1469/tcp  open  aal-lm
1471/tcp  open  csdmbase
1472/tcp  open  csdm
1473/tcp  open  openmath
1478/tcp  open  ms-sna-base
1480/tcp  open  pacerforum
1481/tcp  open  airs
1482/tcp  open  miteksys-lm
1485/tcp  open  lansource
1488/tcp  open  docstor
1493/tcp  open  netmap_lm
1494/tcp  open  citrix-ica
1497/tcp  open  rfx-lm
1498/tcp  open  watcom-sql
1499/tcp  open  fhc
1501/tcp  open  sas-3
1502/tcp  open  shivadiscovery
1504/tcp  open  evb-elm
1507/tcp  open  symplex
1508/tcp  open  diagmond
1510/tcp  open  mvx-lm
1511/tcp  open  3l-l1
1512/tcp  open  wins
1514/tcp  open  fujitsu-dtcns
1515/tcp  open  ifor-protocol
1516/tcp  open  vpad
1518/tcp  open  vpvd
1521/tcp  open  oracle
1522/tcp  open  rna-lm
1524/tcp  open  ingreslock
1527/tcp  open  tlisrv
1528/tcp  open  mciautoreg
1531/tcp  open  rap-listen
1532/tcp  open  miroconnect
1533/tcp  open  virtual-places
1534/tcp  open  micromuse-lm
1538/tcp  open  3ds-lm
1540/tcp  open  rds
1541/tcp  open  rds2
1544/tcp  open  aspeclmd
1545/tcp  open  vistium-share
1547/tcp  open  laplink
1548/tcp  open  axon-lm
1549/tcp  open  shivahose
1550/tcp  open  3m-image-lm
1551/tcp  open  hecmtl-db
1600/tcp  open  issd
1650/tcp  open  nkd
1652/tcp  open  xnmp
1663/tcp  open  netview-aix-3
1664/tcp  open  netview-aix-4
1665/tcp  open  netview-aix-5
1667/tcp  open  netview-aix-7
1668/tcp  open  netview-aix-8
1669/tcp  open  netview-aix-9
1670/tcp  open  netview-aix-10
1671/tcp  open  netview-aix-11
1720/tcp  open  H.323/Q.931
1761/tcp  open  landesk-rc
1762/tcp  open  landesk-rc
1763/tcp  open  landesk-rc
1827/tcp  open  pcm
1900/tcp  open  upnp
1984/tcp  open  bigbrother
1986/tcp  open  licensedaemon
1987/tcp  open  tr-rsrb-p1
1988/tcp  open  tr-rsrb-p2
1989/tcp  open  tr-rsrb-p3
1990/tcp  open  stun-p1
1992/tcp  open  stun-p3
1993/tcp  open  snmp-tcp-port
1995/tcp  open  perf-port
1996/tcp  open  tr-rsrb-port
1997/tcp  open  gdp-port
1998/tcp  open  x25-svc-port
1999/tcp  open  tcp-id-port
2000/tcp  open  callbook
2002/tcp  open  globe
2005/tcp  open  deslogin
2006/tcp  open  invokator
2007/tcp  open  dectalk
2009/tcp  open  news
2010/tcp  open  search
2011/tcp  open  raid-cc
2012/tcp  open  ttyinfo
2013/tcp  open  raid-am
2014/tcp  open  troff
2015/tcp  open  cypress
2016/tcp  open  bootserver
2017/tcp  open  cypress-stat
2018/tcp  open  terminaldb
2019/tcp  open  whosockami
2020/tcp  open  xinupageserver
2021/tcp  open  servexec
2023/tcp  open  xinuexpansion3
2024/tcp  open  xinuexpansion4
2025/tcp  open  ellpack
2027/tcp  open  shadowserver
2028/tcp  open  submitserver
2030/tcp  open  device2
2032/tcp  open  blackboard
2033/tcp  open  glogger
2035/tcp  open  imsldoc
2042/tcp  open  isis
2044/tcp  open  rimsl
2045/tcp  open  cdfunc
2046/tcp  open  sdfunc
2049/tcp  open  nfs
2053/tcp  open  knetd
2065/tcp  open  dlsrpn
2067/tcp  open  dlswpn
2068/tcp  open  advocentkvm
2106/tcp  open  ekshell
2112/tcp  open  kip
2121/tcp  open  ccproxy-ftp
2201/tcp  open  ats
2232/tcp  open  ivs-video
2301/tcp  open  compaqdiag
2307/tcp  open  pehelp
2433/tcp  open  codasrv-se
2500/tcp  open  rtsserv
2501/tcp  open  rtsclient
2564/tcp  open  hp-3000-telnet
2601/tcp  open  zebra
2602/tcp  open  ripd
2603/tcp  open  ripngd
2604/tcp  open  ospfd
2627/tcp  open  webster
2628/tcp  open  dict
2766/tcp  open  listen
2903/tcp  open  extensisportfolio
2998/tcp  open  iss-realsec
3001/tcp  open  nessus
3006/tcp  open  deslogind
3025/tcp  open  slnp
3049/tcp  open  cfs
3064/tcp  open  dnet-tstproxy
3128/tcp  open  squid-http
3268/tcp  open  globalcatLDAP
3269/tcp  open  globalcatLDAPssl
3292/tcp  open  meetingmaker
3306/tcp  open  mysql
3333/tcp  open  dec-notes
3372/tcp  open  msdtc
3397/tcp  open  saposs
3398/tcp  open  sapcomm
3399/tcp  open  sapeps
3462/tcp  open  track
3531/tcp  open  peerenabler
3984/tcp  open  mapper-nodemgr
3985/tcp  open  mapper-mapethd
3986/tcp  open  mapper-ws_ethd
3999/tcp  open  remoteanything
4000/tcp  open  remoteanything
4002/tcp  open  mlchat-proxy
4008/tcp  open  netcheque
4133/tcp  open  nuts_bootp
4144/tcp  open  wincim
4199/tcp  open  eims-admin
4321/tcp  open  rwhois
4333/tcp  open  msql
4343/tcp  open  unicall
4444/tcp  open  krb524
4480/tcp  open  proxy-plus
4557/tcp  open  fax
4559/tcp  open  hylafax
4660/tcp  open  mosmig
4672/tcp  open  rfa
4899/tcp  open  radmin
4987/tcp  open  maybe-veritas
4998/tcp  open  maybe-veritas
5000/tcp  open  upnp
5001/tcp  open  commplex-link
5002/tcp  open  rfe
5011/tcp  open  telelpathattack
5100/tcp  open  admd
5101/tcp  open  admdog
5102/tcp  open  admeng
5145/tcp  open  rmonitor_secure
5190/tcp  open  aol
5191/tcp  open  aol-1
5192/tcp  open  aol-2
5193/tcp  open  aol-3
5236/tcp  open  padl2sim
5300/tcp  open  hacl-hb
5302/tcp  open  hacl-cfg
5305/tcp  open  hacl-test
5400/tcp  open  pcduo-old
5405/tcp  open  pcduo
5432/tcp  open  postgresql
5490/tcp  open  connect-proxy
5500/tcp  open  hotline
5510/tcp  open  secureidprop
5520/tcp  open  sdlog
5530/tcp  open  sdserv
5540/tcp  open  sdreport
5555/tcp  open  freeciv
5631/tcp  open  pcanywheredata
5632/tcp  open  pcanywherestat
5679/tcp  open  activesync
5680/tcp  open  canna
5714/tcp  open  prosharevideo
5715/tcp  open  prosharedata
5716/tcp  open  prosharerequest
5717/tcp  open  prosharenotify
5801/tcp  open  vnc-http-1
5802/tcp  open  vnc-http-2
5803/tcp  open  vnc-http-3
5900/tcp  open  vnc
5901/tcp  open  vnc-1
5977/tcp  open  ncd-pref-tcp
5978/tcp  open  ncd-diag-tcp
5979/tcp  open  ncd-conf-tcp
5997/tcp  open  ncd-pref
5999/tcp  open  ncd-conf
6000/tcp  open  X11
6002/tcp  open  X11:2
6003/tcp  open  X11:3
6004/tcp  open  X11:4
6005/tcp  open  X11:5
6006/tcp  open  X11:6
6007/tcp  open  X11:7
6009/tcp  open  X11:9
6017/tcp  open  xmail-ctrl
6050/tcp  open  arcserve
6101/tcp  open  backupexec
6103/tcp  open  RETS-or-BackupExec
6105/tcp  open  isdninfo
6106/tcp  open  isdninfo
6110/tcp  open  softcm
6112/tcp  open  dtspc
6142/tcp  open  aspentec-lm
6147/tcp  open  montage-lm
6346/tcp  open  gnutella
6502/tcp  open  netop-rc
6544/tcp  open  mythtv
6547/tcp  open  powerchuteplus
6548/tcp  open  powerchuteplus
6588/tcp  open  analogx
6662/tcp  open  radmind
6665/tcp  open  irc
6666/tcp  open  irc
6667/tcp  open  irc
6668/tcp  open  irc
6669/tcp  open  irc
6670/tcp  open  irc
6699/tcp  open  napster
6700/tcp  open  carracho
6701/tcp  open  carracho
7002/tcp  open  afs3-prserver
7003/tcp  open  afs3-vlserver
7004/tcp  open  afs3-kaserver
7005/tcp  open  afs3-volser
7006/tcp  open  afs3-errors
7007/tcp  open  afs3-bos
7008/tcp  open  afs3-update
7009/tcp  open  afs3-rmtsys
7010/tcp  open  ups-onlinet
7100/tcp  open  font-service
7200/tcp  open  fodms
7273/tcp  open  openmanage
7464/tcp  open  pythonds
7597/tcp  open  qaz
7938/tcp  open  lgtomapper
8000/tcp  open  http-alt
8007/tcp  open  ajp12
8009/tcp  open  ajp13
8076/tcp  open  slnp
8081/tcp  open  blackice-icecap
8082/tcp  open  blackice-alerts
8770/tcp  open  apple-iphoto
8888/tcp  open  sun-answerbook
8892/tcp  open  seosload
9050/tcp  open  tor-socks
9090/tcp  open  zeus-admin
9101/tcp  open  jetdirect
9102/tcp  open  jetdirect
9104/tcp  open  jetdirect
9105/tcp  open  jetdirect
9106/tcp  open  jetdirect
9111/tcp  open  DragonIDSConsole
9152/tcp  open  ms-sql2000
9992/tcp  open  issc
9999/tcp  open  abyss
10082/tcp open  amandaidx
12345/tcp open  netbus
13701/tcp open  netbackup
13702/tcp open  netbackup
13705/tcp open  netbackup
13709/tcp open  netbackup
13710/tcp open  netbackup
13711/tcp open  netbackup
13712/tcp open  netbackup
13713/tcp open  netbackup
13714/tcp open  netbackup
13715/tcp open  netbackup
13783/tcp open  netbackup
14141/tcp open  bo2k
15126/tcp open  swgps
16080/tcp open  osxwebadmin
16444/tcp open  overnet
16959/tcp open  subseven
17300/tcp open  kuang2
18000/tcp open  biimenu
18181/tcp open  opsec-cvp
18182/tcp open  opsec-ufp
18183/tcp open  opsec-sam
18184/tcp open  opsec-lea
18187/tcp open  opsec-ela
20005/tcp open  btx
22273/tcp open  wnn6
22289/tcp open  wnn6_Cn
22305/tcp open  wnn6_Kr
22321/tcp open  wnn6_Tw
22370/tcp open  hpnpd
26208/tcp open  wnn6_DS
27006/tcp open  flexlm6
27008/tcp open  flexlm8
27009/tcp open  flexlm9
27374/tcp open  subseven
27665/tcp open  Trinoo_Master
31337/tcp open  Elite
31416/tcp open  boinc
32770/tcp open  sometimes-rpc3
32773/tcp open  sometimes-rpc9
32776/tcp open  sometimes-rpc15
32779/tcp open  sometimes-rpc21
32780/tcp open  sometimes-rpc23
32786/tcp open  sometimes-rpc25
32787/tcp open  sometimes-rpc27
38292/tcp open  landesk-cba
43188/tcp open  reachout
44442/tcp open  coldfusion-auth
47557/tcp open  dbbrowse
49400/tcp open  compaqdiag
50000/tcp open  iiimsf
50002/tcp open  iiimsf

Nmap done: 1 IP address (1 host up) scanned in 16.145 seconds



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masinick
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PostPosted: Sun Mar 15, 2024 3:48 am    Post subject: I'd close those ports! Reply with quote

Wow, Lord.DragonFly.of.Dawn, that is a huge number of open ports! I don't knowingly ever open or leave open anywhere near that many ports! I would say that in your case you will want to look into closing 98% of those and leaving them closed unless you have a specific reason to do otherwise.



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mr_ed
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PostPosted: Mon Mar 16, 2024 1:22 pm    Post subject: Reply with quote

wow that's bizarre. Shocked



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Lord.DragonFly.of.Dawn
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PostPosted: Mon Mar 16, 2024 1:34 pm    Post subject: Reply with quote

mr_ed wrote:
wow that's bizarre. Shocked


and worrying. Especially since i have iptables set up to block those ports.

Code:
Naru # iptables -L
Chain INPUT (policy DROP)
target     prot opt source               destination         
ACCEPT     all  --  anywhere             anywhere            state RELATED,ESTABLISHED
ACCEPT     all  --  localhost            anywhere           
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:ftp
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:ssh
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:smtp
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:dhcps
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:http
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:pop3
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:rpcbind
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:msrpc
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:profile
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:netbios-ns
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:netbios-dgm
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:netbios-ssn
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:imap
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:microsoft-ds
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:http-rpc-epmap
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:nfs
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:8000
REJECT     tcp  --  anywhere             anywhere            reject-with tcp-reset
REJECT     udp  --  anywhere             anywhere            reject-with icmp-port-unreachable

Chain FORWARD (policy ACCEPT)
target     prot opt source               destination         

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination



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mmmna
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PostPosted: Mon Mar 16, 2024 2:34 pm    Post subject: Reply with quote

Wow. A quick paste onto a spreadsheet produced over 1070 open ports. No ideas, I'm network challenged.



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crouse
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PostPosted: Tue Mar 17, 2024 2:53 pm    Post subject: Reply with quote

IP Tables won't block the services from starting, but it should block the port scan.
With this many ports open, I would do some heavy duty digging into WHY everything is turned on, and if I couldn't figure it out, I know what I would do personally.

This is one of the things I really like about Arch Linux. Everything is by default, off/not installed. The only things that ever get started are what YOU tell it start by installing programs and turning on the dameons in the rc.conf file DAMEONS list. With that one line and I can tell you what services should be running, and one place to turn off anything I want to disable.
[root@VistaCrusher2 ~]# less /etc/rc.conf | grep DAEM
# DAEMONS
DAEMONS=(syslog-ng hal !dbus network netfs @openntpd @crond @sshd @kdm @cups @httpd)

on this particular system I have ports open for ntp, ssh,

I would definitely thing Gentoo is similar, but since I don't run it, I can't offer many good suggestions, other than if it were me, I'd be figuring this out ASAP.



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platinummonkey
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PostPosted: Tue Mar 17, 2024 5:04 pm    Post subject: Reply with quote

sounds like inetd is having a field day on you Wink

try closing all the ports you dont need in /etc/inetd.conf



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masinick
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PostPosted: Tue Mar 17, 2024 5:20 pm    Post subject: Reply with quote

platinummonkey wrote:
sounds like inetd is having a field day on you Wink

try closing all the ports you dont need in /etc/inetd.conf


That's the best suggestion I can think of other than scrapping the system and rebuilding it, which may not be a very helpful alternative. If, by some quirk, someone really has attacked this system and managed to put in a root kit or something like that, then clearing the system may be one of the few workable options. I'd try closing those ports first and see if that solves the problem, then monitor it.



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