hello all i am newbie in NAT and i have some problem. i want to have a dynamic nat and this is my topology:
192.168.1.1-----> cisco 2800 ------> 192.168.2.1 and this is my configuration in cisco 2800: interface GigabitEthernet 0/0 ip address 192.168.2.2 255.255.255.0 ip nat outside ip virtual-reassebly in duplex auto speed auto interface GigabitEthernet 0/1 ip address 192.168.1.2 255.255.255.0 ip nat inside ip virtual-reassebly in duplex auto speed auto ip nat pool t 192.168.2.50 192.168.2.60 netmask 255.255.255.0 ip nat inside source list 1 pool t access-list 1 permit any when i ping 192.168.2.1 from 192.168.1.1 (from inside to outside), every thing is ok and nat is done correctly but when i ping 192.168.1.1 from 192.168.2.1 (from outside to inside), packets that received in 192.168.2.1 are as below: request packets: src:192.168.2.1----> dst: 192.168.1.1 reply packets: src: 192.168.2.50----> dst:192.168.2.1 and 192.168.2.1 system accept these packets as its reply!!! i think this behavior is wrong, isn't it? how it is happen? moreover, if i put a freebsd system instead of cisco, everything is the same except that 192.168.2.1 does not accept the reply packets as its reply (as i expected!!). please let me know if the cisco behavior is correct or not and if it is correct, how cisco router do that? please help me if i am misunderstanding. thanks in advance _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
