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LAN to WAN access

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LAN to WAN access - 3.Dec.2004 12:02:00 AM   
Guest
I am a network admin, so i really should know this but...

I have a problem access a WAN intranet from inside our LAN.

The WAN side of the ISA is:
IP: 10.36.43.96
SM: 255.0.0.0 (or 255.255.252.0)
GW: 10.36.40.5 (set by WAN people)
the LAN side is:
IP: 10.40.3.96
SM: 255.255.252.0

There is an intranet which is run by the people who do our WAN, to which we need to connect, this is located at IP 10.107.1.50.

What do I need to set up to be able to connect to this intranet?
I have tried publishing a website, but ( presumably ) because it is on the outside of the firewall nobody can connect to it as the ip that i assign.
Ideally I would just change to the 10.36.43.z range on, but some of the clients have been set statically, so it will take a while.
  Post #: 1
RE: LAN to WAN access - 3.Dec.2004 12:32:00 PM   
tshinder

 

Posts: 50013
Joined: 10.Jan.2001
From: Texas
Status: offline
Hi RB,

Do you have a network diagram? I'm having a hard time determining who needs to connect to whom and where they all are in relation to the ISA firewall.

Thanks!
Tom

(in reply to Guest)
Post #: 2
RE: LAN to WAN access - 3.Dec.2004 6:49:00 PM   
Guest
Yep

internet
|
upstream proxy WAN intranet
10.12.4.60 10.107.1.50
| |
- - - - - - - - - - - - -
|
WAN Router (GW)
10.36.40.5
|
NIC1 10.36.43.96
LAN Proxy (ISA 2004)
NIC2 10.40.3.96
|
LAN Clients 10.40.3.z (SM 255.255.252.0)

We are only allowed to use the 10.36.40-43 range on the WAN, unfortunately, there are a lot of static IPs on the LAN (and programs that use the specific IPs).

Internet works, because the ISA can see both ranges, but the LAN clients cannot.

(in reply to Guest)
  Post #: 3
RE: LAN to WAN access - 3.Dec.2004 6:51:00 PM   
Guest
I'll try that again, i assume somebody doesn't like ASCII art, ignore the '.'

internet
|
upstream proxy . . . . WAN intranet
10.12.4.60 . . . . . . 10.107.1.50
| . . . . . . . . . . . |
- - - - - - - - - - - -
. |
WAN Router (GW)
10.36.40.5
. |
NIC1 10.36.43.96
LAN Proxy (ISA 2004)
NIC2 10.40.3.96
. |
LAN Clients 10.40.3.z (SM 255.255.252.0)

We are only allowed to use the 10.36.40-43 range on the WAN, unfortunately, there are a lot of static IPs on the LAN (and programs that use the specific IPs).

Internet works, because the ISA can see both ranges, but the LAN clients cannot.

(in reply to Guest)
  Post #: 4

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