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Problem with DNAT to internal SSH server

I'm running Astaro 8.103 and have a problem with DNAT'ing to an inside SSH server. The setup I'm trying to accomplish is:

external ip (tcp port 443) -> DNAT -> Internal SSH server (tcp port 22)

The (for me) logical configuration would be the following rule:

Traffic Source: Any
Traffic Service: HTTPS (have also tried custom service src 1024:65535 dst: 443)
Traffic Destination: External (WAN) (Address)
NAT mode: DNAT
Destination: Internal SSH server
Destination Service: SSH
Automatic Packet Filter creation: Yes (have tried manual as well)

With this rule in place I can telnet to port 443 on my external IP, but Putty just times out after a while. Internal SSH to the server works, and other DNAT rules work like a charm. I'm running this in a home environment, so single internal IP range, and single outside IP.

Any help would be appreciated.

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0 groofster over 14 years ago

Hi Bob, thnx for the fast response.

I've tried all kind of different configurations: SSH to SSH source and destination service, manual packet filter, manual source service (port 4433). They all give the same result. Telnet works, Putty (on Windows) fails. The putty config is a copy of the internal one I use to test, except the ip and port.

Any more suggestions ?
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0 groofster over 14 years ago

Hi Bob, thnx for the fast response.

I've tried all kind of different configurations: SSH to SSH source and destination service, manual packet filter, manual source service (port 4433). They all give the same result. Telnet works, Putty (on Windows) fails. The putty config is a copy of the internal one I use to test, except the ip and port.

Any more suggestions ?
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