Ports open on solaris/linux

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Special Forums Cybersecurity Ports open on solaris/linux
# 1  
Old 05-14-2009
Ports open on solaris/linux


I am trying to close all possible ports on my solaris and linux servers.
I am stuck on the following ports on both Solaris 10 (local zone) and Linux (Suse) servers.
Here is nmap output :

22/tcp open ssh
80/tcp open http
1720/tcp open H.323/Q.931
1863/tcp open unknown

22/tcp open ssh
1720/tcp open H.323/Q.931
1863/tcp open unknown

8080/tcp open http-proxy

As you can see in bold on both servers I got 1720/tcp and 1863/tcp ports (telnet as well shows that it is listening).

Do anybody knows what is listening on these ports ?
I try to keep only ssh and web ports.

(I tried lsof/netstat/fuser and stuff but no result with these ports).

# 2  
Old 05-14-2009
Don't quote me (and don't know if it'll help to much) but I think if I remember correctly it has port 1720 is some kind of VoIP, maybe that was on a Windows system.

OK had me thinking if I remembered correctly and I found the following information from http://www.voipvoice.com/faq.html (hope it's OK to post the link Smilie ) - it's the 3rd last question asked and might provide you with a little more information.

For H.323 (MS Netmeeting etc…)

* TCP port 1720 (H.225 call signalling for hosts)
* TCP ports 11000 to 65535 (H.245 capability exchange)
* UDP ports 16384 to 32767 RTP audio stream)

For H.323 (Callserve)

* UDP port 1719 (Callserve signalling)
* TCP port 1720 (Callserve signalling)
* UDP ports 5000 to 65535 (RTP audio stream)

Last edited by woofie; 05-14-2009 at 07:18 AM.. Reason: More information.
# 3  
Old 05-14-2009
On the Linux machine, check the output of
netstat -antp

The '-p' switch will show you which process is the owner of the port.
# 4  
Old 05-14-2009
solaris issue

Hi can anyone tell me what command should i use to find the files which have been created within 24hrs in / .

I tried with this

find mtime 24 /

But its not working. Pls let me know to solve the issue.
# 5  
Old 05-14-2009
Thanks for the answer.
I am dubious about solaris/linux having msn and h323 protocols out of the box :-)
I check netstat but nothing about this ports.
So still no clue about how to close this ports.
# 6  
Old 05-14-2009
Finally I got it !
The pb was not on the machine itself but a FW between my scanner and the host.
Too bad :-)
# 7  
Old 05-23-2009
just to mention, if you have a similar problem in the future, use lsof (in every linux standard repo, for aix available in the linux toolbox)

lsof -i TCP -l

for example
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