Welcome to ISAserver.org

VPN Clients not able to see DHCP server

Users viewing this topic: none

Logged in as: Guest

Printable Version

All Forums >> [ISA 2006 Firewall] >> VPN >> VPN Clients not able to see DHCP server

Page: [1]

Message

<< Older Topic Newer Topic >>

VPN Clients not able to see DHCP server - 24.Nov.2008 11:21:29 AM

JesusisLord

Posts: 64
Joined: 19.Aug.2006
Status: offline

Dear All

My users seem to be able to authenticate with the domain but when they are connected they get a 169.254.x.x address - to my knowledge these IP addresses are created by windows when they can't receive an address from a DHCP server.

If it helps, the VPN clients do pickup the DNS servers IP addresses.

The ISA server currently has the DHCP service installed on it - initially the bindings were set to the Internal Nic but I have since ticked the External Nic as well.

I've been advised to take the DHCP server off ISA and to put it on my DCs, it is something that I will consider doing in the near future but for the mean time, please can someone point me in the right direction.

PS. My ISA server has 3 nics installed:-

External - Public IP
Services - 192.168.254.1/24
Internal - 192.168.50.1 & 192.168.51.1/23

Hope this helps

JIL

Post #: 1

Featured Links*

RE: VPN Clients not able to see DHCP server - 25.Nov.2008 12:35:39 PM

JesusisLord

Posts: 64
Joined: 19.Aug.2006
Status: offline

To give an update and more information:-

I've now uninstalled DHCP off the ISA Server. I've installed DHCP on one of my DCs. Under RRAS I've configured a DHCP relay agent and DHCP seems to be working ok for the Internal network.

Unfortunatly VPN clients are still getting the 169.254 address :(

Under monitoring I see this:-

Denied Connection FWI-01 25/11/2008 17:25:54
Log type: Firewall service
Status: BLANK
Rule: BLANK
Action: Denied Connection
Source: VPN Clients (169.254.73.179:68)
Destination: Local Host (255.255.255.255:67)
Protocol: DHCP (request)
User:
Additional information
Number of bytes sent: 0 Number of bytes received: 0
Processing time: 0 ms Original Client IP: 169.254.73.179
Client agent:

Any help would be greatly appreciated.

Kindest Regards

JIL

(in reply to JesusisLord)

Post #: 2