[nda24]

Внешний адрес как с сервера так и склиента:

D:\Documents and Settings\Администратор>nslookup mail.ru
*** Can't find server name for address 192.168.0.1: Non-existent domain
Server: UnKnown
Address: 192.168.0.1

Non-authoritative answer:
Name: mail.ru
Addresses: 194.67.57.126, 194.67.57.226, 194.67.57.26

В чем причина?

*** Can't find server name for address 192.168.0.1: Non-existent domain
Server: UnKnown
Address: 192.168.0.1