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jcowtan
Beginner

ISP redundant connections when hosting web servers

My customer has two ISP providers and is now looking at how each can back up the other in case of failure. One is a fiber link, the other wireless.

The company hosts its own webservers in a DMZ.

One provider hosts their DNS ands I think that function should move inside. However, I can not get my arms around how they would move over to the other ISP in case of failure.

Going out I think is simple. An alternate path with a high admin distance should do teh trick.

BUT, how do the remote users accessing the webserver applications get routed through the alternate ISP link?

Are we talking BGP?

Any guidence?

1 REPLY 1
pedersen
Beginner

Hi,

The DMZ IP Range are the public or Private, do you make static(NAT) entrys in your firewall to convert a Public to a private IP?

The way i see it, both ISP must use BGP, and be able to route the IP net for the Web-servers, when that is done you can make BGP-Wight on the prefered link, if the Link fails, then there is an altertive route though the other ISP

-Anders.