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New Member

2600 Router to Internet

I have a Cisco 2600 router. I have it plugged intoa catalyst switch where my pcs on the same vlan access it. The other interface is public and plugs into a shared switch which then connects into another router from our ISP out to the Internet. From the Cisco 2600 router I can ping sites by IP on the Internet. I cannot do it from PCs behind the router. I cannot browse the Internet from PCs behind the router also. On the public interface in the config there is a line - "no ip http server". I am wondering if this causing me an issue. What does this do??

What do I need to do in general to be able to configure to access the Internet from a PC behind this router??

I do not have any access lists and IP routing is enable as are both Ethernet interfaces. I know I am missing something very small.

Thank you

3 REPLIES
New Member

Re: 2600 Router to Internet

It sounds like some device between the switch and the internet does not have a route to your inside address. The internal network addresses need to be:

Internet routable

or

Network Address Translated to an Internet-routable address space

or

Your address is routable and your ISP has to add aroute to direct traffic for those addresses to your router.

Re: 2600 Router to Internet

Your router needs to NAT all packets going out of your network. More can be read here.

http://www.cisco.com/pcgi-bin/Support/browse/psp_view.pl?p=Internetworking:NAT&s=Implementation_and_Configuration#Samples_and_Tips

If NAT is already in place, check on the 2600 if you have a default route pointing to your ISP router, and also if the ISP router, knows how to get back to your network.

Re: 2600 Router to Internet

As shanky says, you should do a NAT for your private IP before putting it onto internet clould.

"no ip http server" will not cause a problem. This command is generally used to configure the router from http browser.

Just do a trace from your PC and see what is happening.

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