General discussion

Locked

Two DNS & ISP lines in one Web Server?

By endrewchee ·
Hi!. Please enlighten me. My client was asking me this (let me summarize): -
They have one existing www.xyz.com sitting on one ISP line. Then intend to have www.123.com sitting on another ISP line. In addition, this two sites are to sit into one Web Server. In this possible to configure?

This conversation is currently closed to new comments.

5 total posts (Page 1 of 1)  
| Thread display: Collapse - | Expand +

All Comments

Collapse -

Two DNS & ISP lines in one Web Server?

by Cactus Pete In reply to Two DNS & ISP lines in on ...

The two lines coming in can be handled at the router or firewall . The software for your web server can have a 'virtual domain' allowing you to have more than one site per box.

Collapse -

Two DNS & ISP lines in one Web Server?

by alveden In reply to Two DNS & ISP lines in on ...

Yes, it's definitely possible and have been done. However what kind of ISP line are we looking at? Lease Line, Cable, DSL? Most important, they must be running with fix Public IP, and the webserver should be assigned with an IP address for each ISP.

However, it is not possible to just use your router and your firewall, unless your firewall allowed link load balancing.

Reason is router, firewall and servers usually default all packets to a single default route. With two links, you will have two routes, and the routing can be screwed if the packet comes for the ISP segment which is not you default. Router can handle routing more then one default route, however you will need to apply for ASN numbering for your IP address. Some newer routers does cater for link load balancing. Some firewall like StoneGate have link load balancing ability, which can cater for two link routing.

You might need additional equipment or software to achieve what you need. But it is definitely possible.

Collapse -

Two DNS & ISP lines in one Web Server?

by rawright In reply to Two DNS & ISP lines in on ...

It's possible, and fairly easy. I use Win2K Server, so my comments apply to that OS only. Two NICs - one for each ISP connection - will be needed, and the IP address for each connection must be static. IIS5.0, which is included in Win2K, can be easily configured for multiple sites with different IP addresses. Create a virtual directory for each site and assign each to one of your two IP addresses.

A problem may occur if you plan to use this same server for outgoing Internet traffic from clients on the network. I haven't tried it, but I don't believe Win2K will automatically do load balancing between two connections. Check into the Routing and Remote Access Service; you probably can use it to direct traffic from clients to one or the other connection.

Collapse -

Two DNS & ISP lines in one Web Server?

by wlbowers In reply to Two DNS & ISP lines in on ...

Using a router such as a Cisco 1720 and their software not only can you combine them you can provide load share. The server configuration can privide the sites.

Good Luck Lee

Collapse -

by flan In reply to Two DNS & ISP lines in on ...

iis can run multiple domains. but domains don't sit on isp lines. that doesn't make sense. domains sit on ip addresses...

Back to Networks Forum
5 total posts (Page 1 of 1)  

Related Discussions

Related Forums