[CentOS] Running SSH on a different port

Robert Moskowitz rgm at htt-consult.com
Mon Oct 26 02:54:06 UTC 2009

ML wrote:
> HI All,
> With my new firewall in place, it has opened my eyes to how much  
> traffic gets blocked in a single day and also what are the most active  
> rules. I get *a lot* of requests for port 22.
> How does one switch ssh ports? What is a good port to use? What  
> ramifications does it have when I need to ssh in? Is it as simple as  
> ssh user at hots:port?

Perhaps the first thing I do on a new server is:

vi /etc/ssh/sshd_config

And uncomment the port line, change the port number to my favorite port 
number, save the file, then restart sshd.

I much perfer this method to setting up port limiting runs in iptables 
and ip6tables.

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