[SOLVED] Linode Port Blocking?

general

Does Linode do any port blocking? Specifically of IRC?

I tried installing nbircd on my linode, and I could connect from the linode to itself on 6667 using the public IP (not the loopback / localhost), but I couldn't connect externally from 2 different clients on 2 completely different networks. I triple checked my firewall config on the server, and both the clients can connect to other IRC servers fine. Even tcpdump'ing on the server doesn't show even the SYN packets hitting the server from the clients, so I'm a bit confuddled :/

13 Replies

caker 15 years, 8 months ago Linode Staff

Atlanta blocks 6667 inbound. If that's a problem for you, submit a ticket and we can get your Linode moved to another facility.

Other than that, if you're running CentOS, they have a fairly restrictive firewall rule set enabled by default.

-Chris

forum:mnordhoff 15 years, 8 months ago

Linode doesn't, but the Atlanta data center does. If you really need inbound port 6667, the best solution is to file a support ticket and ask to be migrated to one of the other three data centers. You'll have a couple hours of downtime and get a new IP though.

Edit: Shucks, caker is fast!

forum:fukawi2 15 years, 8 months ago

Well I'm in Atlanta so that makes sense then! Atlanta provides the best speeds for me, and I have 2 Linodes there so I don't really want to move.

Is it just 6667? Can I use 6666 and 6668 etc? I'll just run on those if it's only 6667.

Otherwise, I'll just stick with running ngircd on my home server :P

(Thanks for such quick replies guys! :D)

forum:mnordhoff 15 years, 8 months ago

There's a list of blocked ports. It hasn't been updated in almost a year, though.. It shouldn't be hard for you to try and see what ports are blocked. You could configure the ircd, or just try to telnet to them and see if they show up in your firewall log or tcpdump.