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Cisco Router NAT/ PAT Problem

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  • Cisco Router NAT/ PAT Problem

    Dear all,
    I am facing a strange problem in my Cisco 1841 router, my servers behind Cisco 1841 router working fine over IPSec VPN (router to router IPSec VPN Tunnel), and already added NAtting for Internet access for servers in router, but when I add (ip nat inside) for PAT, for one of my server to allow this server to be accessible from Internet the server stops responding over VPN.
    Your expert advice required on this matter.
    details are as follows. (all IPs in this detail are fake)



    Router A:
    int fast 0/0
    ip address 97.10.10.10 255.255.255.252
    ip nat outside
    crypto map mymap

    int fast 0/1
    ip address 192.168.1.1 255.255.255.0
    ip nat inside

    ip access-list extended Internet
    deny ip 192.168.1.1 0.0.0.255 172.16.1.1 0.0.0.255
    permit ip 192.168.1.1 0.0.0.255 any

    ip access-list extended VPN-RouterB
    permit ip 192.168.1.1 0.0.0.255 172.16.1.1 0.0.0.255
    deny ip 192.168.1.1 0.0.0.255 any

    ip nat inside source list Internet interface FastEthernet0/0 overload


    RouterB:
    int fast 0/0
    ip address 88.10.10.10 255.255.255.252
    ip nat outside
    crypto map mymap

    int fast 0/1
    ip address 172.16.1.1 255.255.255.0
    ip nat inside

    ip access-list extended Internet
    deny ip 172.16.1.1 0.0.0.255 192.168.1.1 0.0.0.255
    permit ip 172.16.1.1 0.0.0.255 any

    ip access-list extended VPN-RouterA
    permit ip 172.16.1.1 0.0.0.255 192.168.1.1 0.0.0.255
    deny ip 172.16.1.1 0.0.0.255 any

    ip nat inside source list Internet interface FastEthernet0/0 overload

    All Server are working fine over VPN and can access Internet, When I add PAT in Router-A to allow remote user to access Server-A from Internet with specific port number, following server drops response to Router-B users over VPN.

    Router-A NAT/ PAT command is as follows.
    ip nat inside source static tcp 192.168.1.2 7651 97.10.10.10 7651 extendable

    Kindly help me to solve this issue.
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