Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. If you'd prefer to explore, try our test area to get started. And see here for current known issues.

New Member

NAT ORDER...

hello,

I m using a cisco 1841 router to allow access to intenal web site from outside :

Router: Wan(f0/1) = 192.168.0.143, Lan(f0/0)= 192.168.159.100,

web server : 192.168.159.50

ip nat inside source static tcp 192.168.159.50 80 interface FastEthernet0/1 8080

it's ok , for users coming from outside, however ,I want to use the wan address too for internal users to acces the web site; means 192.168.0.143:8080 instead of 192.168.159.50, seems that don't work by default as the traffic coming from lan to the outside interface ip is not natted, and the router answers it does not have 8080 ports open:

nat.PNG

looked for articles and seems its related to the order of processing a packet at the level of a router, but is there any way to change it...

regards

1 REPLY
Cisco Employee

Re: NAT ORDER...

Hello,

This is normal. The packets from the inside hosts towards 192.168.0.143 are not routed accross the router outside interface,

so NAT translation won't happen.

Suggestion of solution using an internal dns server:

http://www.cisco.com/en/US/partner/products/hw/routers/ps4081/products_tech_note09186a0080094283.shtml

Regards,

Herve

394
Views
5
Helpful
1
Replies