Improve company productivity with a Business Account.Sign Up

x
  • Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 3434
  • Last Modified:

How to close the port in Solaris 10 ?

I can see using nc(netcat) command that port 53 and 67,68 are open on my solaris system. I am not running DHCP and DNS server, is there a way to close this port for any further communication, so that client would get reject message when they try to connect to this port. Thanks!
0
beer9
Asked:
beer9
  • 3
  • 2
  • 2
1 Solution
 
omarfaridCommented:
use lsof to find what processes are using these ports and then stop them
0
 
beer9Author Commented:
do not we have some sort of firewall in Solaris to achieve this?
0
 
Brian UtterbackPrinciple Software EngineerCommented:
If you are running Solaris, then port 53, 67 and 68 are priv ports and can only be bound by system processes. Since they are all below 512, the OS also will not use them as RCP and RLOGIN ports, so it would appear that you are running DNS and DHCP.

Try this as root:

cd /proc
pfiles * > /tmp/allfiles

Then look in the /tmp/allfiles file for 'port 53', 'port 67' and 'port 68' That will tell you which processes are using those ports.
0
Free Tool: SSL Checker

Scans your site and returns information about your SSL implementation and certificate. Helpful for debugging and validating your SSL configuration.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

 
beer9Author Commented:
Thanks blu, is there a way to block some port which is gt 1023 also, I just want to know how to do port blocking/unblocking. we do not have firewall like iptables in Solaris? Thanks!
0
 
omarfaridCommented:
you may look for wrapper s/w
0
 
Brian UtterbackPrinciple Software EngineerCommented:
Yes, Solaris 10 comes with IPfilters installed. To configure them, see this doc:

http://docs.sun.com/app/docs/doc/816-4554/eupsq?a=view
0
 
beer9Author Commented:
Thanks blu!
0
Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

Join & Write a Comment

Featured Post

Free Tool: Subnet Calculator

The subnet calculator helps you design networks by taking an IP address and network mask and returning information such as network, broadcast address, and host range.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

  • 3
  • 2
  • 2
Tackle projects and never again get stuck behind a technical roadblock.
Join Now