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Old 05-30-2005, 09:33 AM   #1
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change SSH to diffrent port

hello all

two month lately i got infected with suckit, SHV4, SHV5 rootkit, and i don't know how to uninstalled or to remove it.I think rename the infected is fine this also happened with SHV4 and SHV5, and that make me to shut down SSH Server

this my questions ?

1. i checked that rootkit (suckit, SHV4, SHV5) with rkhunter and chkrootkit
is remove or rename the folder is enough ?
2. regarding with my SSH Server, change port to 222 (default smoothwall distro)
is it good way ?

thanks for your concerned
Old 05-30-2005, 10:19 AM   #2
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If you've gotten a rootkit best upgrade everything, run
"netstat -nap"
and look at the lines LISTEN

and see which programs are listening, and upgrade ALL of those programs to the latest versions. And remove any of those programs that you don't need.

No point removing it if someone can just get in again and put in another rootkit. If someone knows your computer is vunerable it doesn't take long to run a port scan and find port 222.
Old 05-30-2005, 04:00 PM   #3
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Re: change SSH to diffrent port

1. i checked that rootkit (suckit, SHV4, SHV5) with rkhunter and chkrootkit is remove or rename the folder is enough ?

No. If you've been compromised and a rootkit was installed, then you absolutely need to format and re-install from scratch (not from a backup). Once someone has gained root on your system, it can be extremely hard to identify all changes or backdoors that may have been installed on the system.

2. regarding with my SSH Server, change port to 222 (default smoothwall distro)
is it good way ?

You'll be better off using good paswords and configuring sshd to not allow root logins. Most port scanners now do some form of service interrogation and can identify what services you are running no matter what port you run them on. Changing to an alternate port will however reduce the number of lame sciptkiddie attacks (like brutessh).
Old 06-05-2005, 08:28 AM   #4
Registered: Oct 2004
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Regading your ssh server you can easily change the port by editing the /etc/ssh/sshd_config file

#Port 22
Port 443

restart the sshd

I chose to put mine on 443 because I travel to other companies and in most cases companies block outbound port 22 however they almost never block 443. This enables me to connect to my site right through their firewall. I can even tunnel vnc, samba, etc. as needed.

Hope this helps
Old 08-13-2009, 06:24 PM   #5
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For the benefit of those searching for this solution as of 08-2009:

In smoothwall 3 you would edit /usr/etc/sshd_config
Old 08-13-2009, 06:55 PM   #6
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userzaq1xsw2, please don't resurrect dead threads.

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