5566是什么端口

5566应该是备用的端口，没有分配有作用的

详细的常见的UDP端口如下：

UDP 9=Chargen

UDP 19=Chargen

//UDP 135=Netbios Remote procedure call

//UDP 137=Netbios name (DoS attacks)

//UDP 138=Netbios datagram

//UDP 139=Netbios session (DoS attacks)

UDP 1025=Maverick's Matrix 1.2 - 2.0

UDP 1349=BO dll

UDP 2140=Deep Throat

UDP 2989=RAT

UDP 3150=Deep Throat

UDP 3801=Eclypse

UDP 5503=Remote Shell Trojan

UDP 6112=Battle.net Game(不是木马)

UDP 6838=Mstream Agent-handler

UDP 7028=未知木马

UDP 7983=MStream handler-agent

UDP 8787=BackOrifice 2000

UDP 8879=BackOrifice 2000

UDP 9325=MStream Agent-handler

UDP 10067=Portal of Doom

UDP 10167=Portal of Doom

UDP 12378=W32/Gibe@MM

UDP 18753=Shaft handler to Agent

UDP 21554=GirlFriend

UDP 22784=Backdoor.Intruzzo

UDP 26274=Delta Source

UDP 26374=Sub-7 2.1

UDP 26444=Trin00/TFN2K

UDP 26573=Sub-7 2.1

UDP 29891=The Unexplained

UDP 31335=Trin00 DoS Attack

UDP 31337=Baron Night， BO client， BO2， Bo Facil， BackFire， Back Orifice， DeepBO