Teamspeak 3 Blacklist/Greylist Protocol

Kaptan647

Kaptan647

Retired Staff
Contributor
Apr 25, 2015
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Clients sends a UDP Datagram to the blacklist.teamspeak.com:17385. It containst the ip adress of the server:
Code: 
ip4:xxx.xxx.xxx.xxx
After Server responds:
Code: 
x,13371337133


x=0 ==> Blacklisted
x=1 ==> Ok
x=2 ==> Greylisted
13371337133 ==> I dont know. Teamspeak devs thought it will be funny ?

Apparently teamspeak doesnt check xxx.xxx.xxx.xxx part. It only checks ;
  • if there is another char other than dots and numbers
  • If lenght <= 15

For example this will be accepted as valid requests:
Code: 
ip4:999999999999999
or
ip4:...............
or
ip4:.3645.235.211
or
ip4:133713371337
 
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