how to allow and deny ssh acces to certain IPs

caedo · 08-29-2008, 04:55 PM

good day,

I need to be able to allow certain IPs ssh access to my server and deny the access to the rest of the incoming requests. I've seen that iptables is used to do this type of work, but it is a bit confusing, can you help me out?

I need only to grant access to the IPs I want and deny the access to the rest of IPs.

How can this be achieve?

thanks in advance

btw, im running centOS 5.2.

caedo

estabroo · 08-29-2008, 06:03 PM

Put in rules for accepting connections and then a rule to reject or drop.

iptables -A INPUT -p tcp -s ip_address1 --dport 22 -j ACCEPT
iptables -A INPUT -p tcp -s ip_address2 --dport 22 -j ACCEPT
iptables -A INPUT -p tcp --dport 22 -j REJECT --reject-with tcp-reset

tarikacct · 09-12-2008, 10:45 AM

I just used it and works perfect. thanks estabroo.

Micro420 · 09-13-2008, 09:10 AM

Another method is to edit your hosts.allow and hosts.deny.

Glad to see you are running the best distro!

vikas027 · 09-19-2008, 11:47 AM

Quote:

Originally Posted by Micro420

Another method is to edit your hosts.allow and hosts.deny.

Please give an example.

Regards,
VIKAS