Security an IP resolve

[latpanel]

Perhaps this can be a fool question, sorry if it's so.
I've a dedicated server with just one ethercard and I'm thinking of confg several virtuals cards, so each new IP could be assigned to a service:
nn.nn.nn.01 - webserver (main or real IP)
nn.nn.nn.02 - mail server
nn.nn.nn.03 - ftp server
This three IP would be configured too at my DNS service.

nn.nn.nn.04 - sshd server (this doesn't appear at DNS and is not related to my site so it is "invisible" )

I think this is a very simple way to hidden my sshd server, too simple perhaps, but I wonder if it can be a good idea or it's useless.

Any suggestion?

 

[chirpy]

I cannot see the point in doing any of that Most scripts looking for your SSH access are simply trawling a range of IP addresses, so it won't be hidden. You'd be better off simply moving SSH to a different port, which is simple enough to do in /etc/ssh/sshd_config

 

[latpanel]

Yes, I know that a security tip es a new port, but I thought this would be a new obstacle. But, yes perhaps you are right, too much work for a very little improve.

Thanks