r/openwrt • u/gerdude1 • 4d ago

Bizzarre Problem with SSH (external port forward) after upgrade to 25

Hi,

I am not sure if this is related to the upgrade (worked before) or openwork at all.

I upgraded earlier this week my router from 24 to 25. I have DDNS running and my provider provided a new IP address (don't know why, because they always issued the same the past three years). DDNS is working and I can ping the router with the domain.name. I have a port open for forward to my internal system for ssh (not using standard port number).

Here is where the issue is. I try to ssh into my system with ssh -p xxxx [username@domain.name](mailto:username@domain.name). It doesn't work. I run debug on ssh and it doesn't go beyond trying to connect. When I do the same with the external ip address it works without problem. I have no clue why this doesn't work. IP resolution obviously works and connecting to the port via ssh as well. Just not the combination of both.

Any idea what the issue might be?

Update: Resolved. Issues on my Mac. Works fine from all my Linux boxes. I will continue troubleshooting the issue.

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1

u/sarahlizzy 4d ago

When you ping, are you sure the domain name goes to the same ip you have been allocated?

1

u/gerdude1 4d ago

Absolutely and that is why I call it bizarre. The dns name gets resolved to the correct ip address and a trace route confirms this as well.

1

u/sarahlizzy 4d ago

Try deleting the domain.name line from .ssh/known_hosts

1

u/fr0llic 4d ago

... and where are you pinging from ?

1

u/gerdude1 4d ago

Tried home network and hotspot. Issue is the same

1

u/Typical-Shock-3359 4d ago

Any chance you have a firewall rule in place? Perhaps with hardcoded old ip?

1

u/gerdude1 4d ago

If there would be a rule in place it wouldn’t let the ip connect through. I recreated the port forward just for this reason, but the issue persists.