Hi guys I have two problems with my dedicated ubuntu server 1) can't login via ssh log shows: "fatal: /var/run/sshd must be owned by root and not group or world-writable." so I changed the permission via ftp to 744, but nothing happens! 2)server is unreachable, I type IP address in browser and nothing Any help will be appreciated!
As the server isn't reachable, i guess neither you, or us, could do anything about it. You'd need your provider to check this out for you.
I wasn't clear enough: the server is not reachable online. I can login via ftp as root. This is all the server permits.
I would suggest you get in touch with the provider to ensure that SSH access is restored, without this, you are going to have your hands tied. Do you have a control panel with this server? Chris
I restored ssh access How can I solve the second problem? server is not accessible via its ip if I type its IP in browser - no http headers, no logs change, nothing
Looks like you found it. Firewalls trip up many new people. Anytime I have a system that I cannot reach, the first thing I check is the firewall. After that, you can run ping/traceroute from your location to the server IP and see where the route dies. From the server side, ping the server's own IP. This will test local networking setup. Then ping the gateway IP. I've seen many people pull their hair out only to find something simple like a firewall or routing table was incorrect. In fact, I had a staff member who put a big post it note on their terminal that read: To make sure he did not forget to check this.