On Mon, 2003-02-17 at 16:10, Allen Umlas wrote:
> Fellow Pluggers,
> I encountered twice been hacked by someone outside my network, What
> port usually crakers entered to system? what are thing usually things that
> hackers do? I used ipchains as my firewall but it useless. How can i check
> my server and block those ports that are common to hackers... I hope i can
> gain more answers here.
Ian Sison gave me this command to check the open ports.
# chkconfig --list
All "on" status are the running ports/services. You need to set the
unnecessary and you don't need ports/services to "off"
To check the running ports/services on runlevel 3:
# chkconfig --list | grep 3:on
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