Putty not work when Linux IPTABLES is working.

gardenair · 01-18-2011, 11:54 PM

I am using putty in my windows machine to access my Linux server terminal.

Code:

Putty works fine if I disable my Linux IPTABLES.

My Windows machine IP is 192.168.1.249
Linux server IP address is 192.168.1.200

I don't know how to allow it through IPTABLES.The port which putty is using is 22.
Kindly help me.
Thnaks
garden

jschiwal · 01-19-2011, 12:05 AM

Which distro are you using? Many distros (eg. suse, fedora) have front ends allowing you to open the default ssh port easily. Ubuntu doesn't but you can install a package such as firestarter to provide a front end. The front ends will probably add this line to the firewall startup script:

iptables -A INPUT -i eth0 -p tcp -m tcp --dport 22 -j ACCEPT

gardenair · 01-19-2011, 01:18 AM

Thanks for the guidance. Well I am using Red Hat Linux.I have use the command

Code:

#iptables -F

and start the service and add the IPTABLE rule which you mentioned. again stop and start the service.From windows xp computer I give the IPa ddress of my Linux machine but no success.
When I stop the iptables service putty works fine.

corp769 · 01-19-2011, 03:20 PM

Port 22 is being blocked by iptables. Try using the built in GUI for configuring your firewall. Also, if you are using wireless, the command that jschiwal gave you will not work, since you will need to change the interface to the one you are using.