Such wallet cannot synchronise.

Log keeps repeating:

trying connection 213.73.189.244:22556 lastseen=0.9hrs
connection timeout
trying connection 213.73.189.244:22556 lastseen=0.9hrs
connection timeout

litecoin/feathercoin/bitcoin wallets all work fine.

$ nmap -p 22556 213.73.189.244

Starting Nmap 5.21 ( http://nmap.org ) at 2013-12-18 16:36 WST
Nmap scan report for d549bdf4.cm-10-1a.dynamic.ziggo.nl (213.73.189.244)
Host is up (0.33s latency).
PORT STATE SERVICE
22556/tcp filtered unknown

No... its not my firewall. Tried from two different hosts on two different networks.