Re: a record?

["Patrick Lynchehaun" <plynchehaun () servecentric com>]

> In Iptables you can keep port 22 closed until needed, opening it first by telneting to a higher port say 5500 and 
> Iptables just giving access to this ip. If you want to close it again you can telnet back in on another assigned port 
> say 5501, thus closing ssh port to that ip.
>
>
> -A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 22 -m recent --rcheck --name SSH -j ACCEPT
> -A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 5500 -m recent --name SSH --set -j DROP
> -A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 5501 -m recent --name SSH --remove -j DROP
>
> Thanks,
>       Patrick.
>
> > > Moving sshd from port 22 to port 137, 138 or 139. Nasty eh?
> >
> > don't do that! Lots of (access) isps around the world (esp here in
> > Europe) block those ports
>
> If you're going to move sshd somewhere else, port 443 is a fine
> choice.  Rarely blocked, rarely probed by ssh kiddies.  It's probed
> all the time by malicious web spiders, but since you're not a web
> server, you don't care.
>
> R's,
> John

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