0
votes
1answer
469 views

Locked myself out of SSH with UFW

I had my server set up to accept SSH connections on port 21966, I followed some steps to configure ufw however it has now locked me out of all SSH access on any port! I've been able to boot my ...
1
vote
1answer
65 views

Setting up ufw without locking yourself out

Basically I want to protect a Ubuntu server with a firewall and sided for ufw. The big problem is that I don't have physical access to the server, neither is it possible to force a reboot or revert to ...
1
vote
2answers
492 views

Firewall blocking some strange communications from source-port 22 to over-seas ip addresses. Should I be concerned?

I'm responsible for a server that serves a single service (ssh) over the internet via port-forwarding through a firewall. The ssh service login is limited to encryption-key only (no passwords ...
3
votes
1answer
2k views

Turning on UFW stops my e-mail client functioning (both imap and smtp) even though they are allowed?

I am using ubuntu 10.04 on a VPS. Without enabling UFW everythign works fine - imap using port 143. And sends emails using smtp port 587. However, when I turn on UFW a lot of problems are ...
1
vote
1answer
704 views

SSH freeze when UFW is enabled

I have a small Ubuntu 10.10 server and i recently noticed a weird behavior (not sure if it was happening before). If I have ufw enabled (with default deny all in, allow all out, allow all http, allow ...