FTP Problem ...

[Meldrew]

I have a 2003 server and have ftp server running. There are 2 NICs and RRAS is configured with the NAT firewall. There is also a router with a firewall for internet access which the external NIC is connected to.

I can FTP to the external IP from "inside" the network and successfully login with my domain login and password but I can't login from outside the building.

The router firewall has port 21 open and also the NAT firewall forwards port 21 to the internal private NIC.

Any thoughts?

Just another clue - I have source offsite running successfully on the same machine which works through the same way using port 8081 - all is OK with that ...

 

[pgaliardo]

How are you accessing from the outside? FQDN or IP Address?. If it's by name, may be a DNS problem.

 

[Meldrew]

Thanks for your reply - I am accessing via IP address

 

[pgaliardo]

The IP Address of the WAN NIC of the server or the IP Address of the router?

 

[Meldrew]

The IP address of the WAN NIC ...

 

[pgaliardo]

When you access it successfully internally, you don't need to go through the router, so that's where I would start troubleshooting. Check the config on the router/firewall for routes, access-lists, restricitions, etc.

Can you ping the Server WAN NIC from the outside?