Прошивка
Настройте как показано тут:
http://www.addpac.su/nat_apos.htm
+ свои порты
nat-list 0 pat group-static-entry tcp 2000 2000 192.168.0.2
nat-list 0 pat group-static-entry udp 2000 2000 192.168.0.2
nat-list 0 pat group-static-entry tcp 2001 6880 192.168.0.1
nat-list 0 pat group-static-entry udp 2001 6880 192.168.0.1
nat-list 0 pat group-static-entry tcp 6881 6969 192.168.0.2
nat-list 0 pat group-static-entry udp 6881 6969 192.168.0.2
nat-list 0 pat group-static-entry tcp 6970 65535 192.168.0.1
nat-list 0 pat group-static-entry udp 6970 65535 192.168.0.1