I just want to point this out before people begin mass migrations to the new DC.
I've already brought this to caker's attention (and I'm unsure of where the issue stands currently) but I migrated to the new DC a couple days ago, and discovered that AtlantaNAP is filtering a lot of ports. Much more than ThePlanet does.
And it's filtering them inbound and outbound, such that not only can I not host something on port 6667, for example (not that I do), but I cannot connect to a remote server on the same port, either.
Here's the list (from nmap -vv -sA)
Code:
1/tcp filtered tcpmux
9/tcp filtered discard
11/tcp filtered systat
13/tcp filtered daytime
15/tcp filtered netstat
19/tcp filtered chargen
93/tcp filtered dcp
111/tcp filtered rpcbind
135/tcp filtered msrpc
136/tcp filtered profile
137/tcp filtered netbios-ns
512/tcp filtered exec
514/tcp filtered shell
515/tcp filtered printer
540/tcp filtered uucp
593/tcp filtered http-rpc-epmap
707/tcp filtered
1075/tcp filtered
1080/tcp filtered socks
1180/tcp filtered
1182/tcp filtered
1434/tcp filtered ms-sql-m
1900/tcp filtered UPnP
2282/tcp filtered
3128/tcp filtered squid-http
3332/tcp filtered
3802/tcp filtered
4444/tcp filtered krb524
5000/tcp filtered UPnP
5490/tcp filtered connect-proxy
6001/tcp filtered X11:1
6002/tcp filtered X11:2
6003/tcp filtered X11:3
6004/tcp filtered X11:4
6005/tcp filtered X11:5
6006/tcp filtered X11:6
6007/tcp filtered X11:7
6008/tcp filtered X11:8
6009/tcp filtered X11:9
6010/tcp filtered
6011/tcp filtered
6012/tcp filtered
6013/tcp filtered
6014/tcp filtered
6015/tcp filtered
6016/tcp filtered
6017/tcp filtered xmail-ctrl
6018/tcp filtered
6019/tcp filtered
6020/tcp filtered
6021/tcp filtered
6022/tcp filtered
6023/tcp filtered
6024/tcp filtered
6025/tcp filtered
6026/tcp filtered
6027/tcp filtered
6028/tcp filtered
6029/tcp filtered
6030/tcp filtered
6031/tcp filtered
6032/tcp filtered
6033/tcp filtered
6034/tcp filtered
6035/tcp filtered
6036/tcp filtered
6037/tcp filtered
6038/tcp filtered
6039/tcp filtered
6040/tcp filtered
6041/tcp filtered
6042/tcp filtered
6043/tcp filtered
6044/tcp filtered
6045/tcp filtered
6046/tcp filtered
6047/tcp filtered
6048/tcp filtered
6049/tcp filtered
6050/tcp filtered arcserve
6051/tcp filtered
6052/tcp filtered
6053/tcp filtered
6054/tcp filtered
6055/tcp filtered
6056/tcp filtered
6057/tcp filtered
6058/tcp filtered
6059/tcp filtered
6060/tcp filtered
6061/tcp filtered
6062/tcp filtered
6063/tcp filtered
6588/tcp filtered analogx
6667/tcp filtered irc
6669/tcp filtered
6711/tcp filtered
6712/tcp filtered
6776/tcp filtered
7000/tcp filtered afs3-fileserver
7441/tcp filtered
12345/tcp filtered NetBus
12346/tcp filtered NetBus
16660/tcp filtered
22788/tcp filtered
27665/tcp filtered Trinoo_Master
31337/tcp filtered Elite
33270/tcp filtered
39168/tcp filtered
53201/tcp filtered
65000/tcp filtered
Updated list of blocked ports on 2008-07-05. In the past year, they seem to have unblocked ports 138, 139, 445, 623 and 664