Solved

How many NICs does Forefront need?

Posted on 2010-11-23
7
672 Views
Last Modified: 2012-05-10
I'm spec'ing a server for Forefront TMG.  We have 4 VLANs, and 2 ISPs.  Does that automatically mean I should have 6 NICs?  Can I use 1 NIC for ISP redundancy?

I do have L3 switches, but they are absolutely atrocious (Dell 6248) and I'd like to keep as much stress as I can off them to ensure reliability.

The VLANs are:

Staff PCs
Management (Servers, management IPs)
Public kiosk PCs
Public (anonymous unsecured) wireless
0
Comment
Question by:sbumpas
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 4
  • 3
7 Comments
 
LVL 51

Expert Comment

by:Keith Alabaster
ID: 34200237
Two nics for external - one for each ISP in ISP failover mode.
one nic as a dmz for the public networks
one for internal.

Use the three-legged firewall template

0
 

Author Comment

by:sbumpas
ID: 34200278
For the internal networks, would routing be handled by TMG or by L3 network equipment?
0
 

Author Comment

by:sbumpas
ID: 34200295
I should probably ask the same question for the public networks, as you suggest they share a NIC?  I assume the NIC would be tagged, if the switches don't handle the routing?
0
Free NetCrunch network monitor licenses!

Only on Experts-Exchange: Sign-up for a free-trial and we'll send you your permanent license!

Here is what you get: 30 Nodes | Unlimited Sensors | No Time Restrictions | Absolutely FREE!

Act now. This offer ends July 14, 2017.

 
LVL 51

Expert Comment

by:Keith Alabaster
ID: 34200447
If they are tagged then FTMG would not be able to handle it - FTMG is not a router in itself, it uses the routing capabilitirs of the host OS. The port used by the FTMG to connect to its nearest L3 switch should be a vlan of its own or a straight subnet with the l3 switch using that subnet as its gateway to the FTMG.

0
 

Author Comment

by:sbumpas
ID: 34200489
I think I understand - the 2 internal NICs should be dedicated /30, correct?
0
 
LVL 51

Accepted Solution

by:
Keith Alabaster earned 500 total points
ID: 34202938
That would work fine - yes.

When you configure the FTMG wizrad, it will ask what are the internal addresses it protects. Includse ALL addresses that are contactable through the INTERNAL nic. These MUST include the network ID's and the broadcast addresses for ALL internal vlans and subnets.

i.e.
192.168.0.0 - 192.168.0.255

Do the same for the Wireless/untrusted nic.
0
 

Author Closing Comment

by:sbumpas
ID: 34205804
Thanks again!
0

Featured Post

Is Your DevOps Pipeline Leaking?

Is your CI/CD pipeline a hodge-podge of randomly connected tools? You’ve likely got a tool to fix one problem & then a different tool to fix another, resulting in a cluster of tools with overlapping functionality. Learn how to optimize your pipeline with Gartner's recommendations

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

To setup a SonicWALL for policy based routing to be used with the Websense Content Gateway there are several steps that need to be completed. Below is a rough guide for accomplishing this. One thing of note is this guide is intended to assist in the…
In the world of WAN, QoS is a pretty important topic for most, if not all, networks. Some WAN technologies have QoS mechanisms built in, but others, such as some L2 WAN's, don't have QoS control in the provider cloud.
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…

734 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question