How do I set up a secure SSH connection to an AS/400 from outside a VPN using a linux thin client?
To do this the user needs an SSH server running on the firewall into his VPN. There are several ways to setup a secure connection as described below. • Define a Putty connection to the firewall using SSH. On the Tunnels tab of the Putty SSH configuration define a new forwarded port. For 5250 the source port could be anything (23, 2023, etc.). For the destination specify the address of the AS400 and port 23. (ie – 192.168.0.150:23). Then click the Add button to add this port forwarding. For the 5250 connection the IP address should be 127.0.0.1 and the port is what you specified as the source port above. Auto start the Putty session – before you can start the 5250 session YOU MUST LOGIN to the SSH server using the putty session. Once you have logged in you can start the 5250 session and it is now secure. • Define a dummy telnet connection to address 127.0.0.1. Then on the Options line put : -e ssh -Nf -L localport:IP address of AS400:dest port -l the is the user to login to the SSH serv
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