Carp virtual ip

[hoiyi88]

when i config the ip to firewall –> Nat --> Port forward and 1:1.
1. The pc always ping time out.The connection unstable. When i disable the ip 1:1, the problem resume normal.
2. The ftp server connect from outside will show error 421 login time exceeded.
3. The RDP 3389 was unstable as well always disconnect.

Please help many thanks!!!!