General discussion

Locked

2 ISPs and 1 LAN: Bridging? Or what?

By RonKoch ·
I'm a part-time Net Admin who now has TWO ISPs (with fixed IPs) coming into my shop. My boss wants them both on my LAN providing in/out access. I have a SBS2003 PC available and all the NICs I need. The SBS2003 PC will also be providing Exchange services for my LAN and internet clients. What is the best way to implement all of this?

This conversation is currently closed to new comments.

14 total posts (Page 1 of 2)   01 | 02   Next
| Thread display: Collapse - | Expand +

All Comments

Collapse -

by dryflies In reply to 2 ISPs and 1 LAN: Bridgin ...

There is very little to be gained if anything at all by having two ISPs connected to your lan. I suppose you could set it up so your load is balanced between the two thus giving you higher bandwidth. Do you have a firewall? a managed switch? a router? using just the SBS server, you could put 3 nics in it with 2 of them going to the isp connections (cable, DSL, modem?) and the third connected to your internal lan. There was a recent article in TR about using your windows server as a router. follow the instructions from that article. other than that, a better aproach is to have a real router do the work.

Collapse -

by RonKoch In reply to

Poster rated this answer.

Collapse -

by jtew In reply to 2 ISPs and 1 LAN: Bridgin ...

You can do it via software, setting it up as a router, however, your best bet is to get a upper-end router, and configure it to do load balancing on the two seperate connections.

Collapse -

by RonKoch In reply to

Poster rated this answer.

Collapse -

by jtew In reply to 2 ISPs and 1 LAN: Bridgin ...

you may have to create nat tables that seperates the flow of internet traffic, certain Ip ranges go out each connection.

Collapse -

by RonKoch In reply to

Poster rated this answer.

Collapse -

by sgt_shultz In reply to 2 ISPs and 1 LAN: Bridgin ...

Buy the microsoft books for windows 2003 certification preparation. buy the ones on network architecture.
you will need special hardware to mux the two connections together. do you really need the bandwidth? how much of the picture of how why 2 isp are coming in do you know. i mean, is one AOL or something? i'd investigate everything thoroughly until i understood. a good resource will be the 2nd level tech guys at your isp. find a router and look for a support phone number on it.
i think it is fab to have to isp's. you have two internet portals. yum...security admin's delight...
The routing that comes in sbs via iis is for putting a public isp on one nic and your lan on the other and firewalling between as you know. not for ganging up internet connections.
and i think you could segment your network to get half of them resolving internet requestes to one isp and half to another but not with the dreaded SBS, i am pretty sure. i would ask microsoft that one. you might get free tech support...

Collapse -

by RonKoch In reply to

Poster rated this answer.

Collapse -

by CG IT In reply to 2 ISPs and 1 LAN: Bridgin ...

ISA server 2004 can do load balancing. for more info on setting up ISA server for load balancing see isaserver.org

Collapse -

by RonKoch In reply to

Poster rated this answer.

Back to Networks Forum
14 total posts (Page 1 of 2)   01 | 02   Next

Related Discussions

Related Forums