Static NAT not working over the GRE Tunnel

Unanswered Question
Jun 22nd, 2009

my config as follows

interface Tunnel5

description "" xxxxxx ""

bandwidth 1024

ip address a.a.a.a 255.255.255.252

ip mtu 1500

tunnel source b.b.b.b

tunnel destination k.k.k.k

!

interface FastEthernet0/0

ip address y.y.y.y 255.255.255.128

ip address b.b.b.b 255.255.255.240 secondary

ip nat inside

interface Serial1/0

description *** 2MBPS Link ***

bandwidth 2048

ip address z.z.z.z 255.255.255.252

ip accounting output-packets

ip nat outside

ip route 0.0.0.0 0.0.0.0 y.y.y.y-1

ip route w.w.w.w 255.255.255.224 Tunnel5

ip nat inside source static w.w.w.w y.y.y.y extendable

this static nat translations not working.Please help me to resolv this

I have this problem too.
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smohanasundaram Mon, 06/22/2009 - 05:53

thanks for your reply

now i configured ip nat inside to tunnel interface,but not working

i am able to ping the ip address.i cannot able to work with other services like DNS and Http

thanks in advance

smohanasundaram Mon, 06/22/2009 - 06:31

yes.nat translation is formed.But when i telnet Y.Y.Y.Y 80 this output will be connection refused error

smohanasundaram Mon, 06/22/2009 - 06:52

yes.router translates the ip and ports.but i cannot able to work with services

thanks in advance

thotsaphon Mon, 06/22/2009 - 11:18

S mohana,

Please explain in detail on what you're going to accomplish with NAT. It should be a good idea to explain about the direction of traffic(dest/source) pass through this router.

As other poster said,let us see the output of "debug ip nat detail".

HTH,

Toshi

smohanasundaram Mon, 06/22/2009 - 21:07

debug command output as follows

*Mar 6 18:29:56.303 IST: NAT: o: tcp (59.99.0.239, 6318) -> (203.112.139.174, 135) [7966]

*Mar 6 18:29:56.303 IST: NAT: o: tcp (59.95.189.53, 8308) -> (203.112.131.238, 135) [2492]

*Mar 6 18:29:56.303 IST: NAT: o: udp (202.54.15.30, 53) -> (203.112.128.20, 1024) [19190]

*Mar 6 18:29:56.303 IST: NAT: o: udp (203.112.151.57, 59651) -> (203.112.128.1, 161) [47]

*Mar 6 18:29:56.303 IST: NAT: o: udp (200.230.94.35, 48035) -> (203.112.128.25( This is my DNS Server IP Address, 53) [33402]

*Mar 6 18:29:57.123 IST: NAT: o: udp (203.112.151.51, 59492) -> (203.112.128.25, 53) [29470]

*Mar 6 18:29:57.127 IST: NAT: o: udp (200.142.58.20, 10795) -> (203.112.128.25, 53) [0]

*Mar 6 18:29:57.127 IST: NAT: o: tcp (203.112.205.197, 2411) -> (203.112.128.69, 135) [56942]

*Mar 6 18:29:57.127 IST: NAT: o: udp (195.90.231.241, 38844) -> (203.112.128.20, 53) [0]

*Mar 6 18:29:57.127 IST: NAT: o: icmp (200.142.58.20, 52452) -> (203.112.128.20, 53) [57184]

*Mar 6 18:29:57.127 IST: NAT: o: udp (203.112.151.51, 59492) -> (203.112.128.20, 53) [29472]

thanks

smohanasundaram Tue, 06/23/2009 - 03:34

yes.i am able to ping inside host( NATed Ip) from outside world.but http and DNS servcies not working.in inside network http and DNS working fine

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