RPC Server unavailable

[Priapus]

Howzit guys,

I need some urgent assistance please if possible.

I have an SBS 2003 server running at a site. On this server there are three network connections:

WAN, LAN and DMZ.

WAN is connected to the ISP (Via router)
DMZ - Is for a seperate part of the company not related to the network
LAN - For all users on LAN and Wifi points connected to the switch.

I have ISA 2004 running (Actually, the last guy installed it on here for some stupid reason)

So, we're facing a strange problem at the moment, which I cannot work out.

If the WAN connection goes down (Internet or disconnection from server) I am unable to login to any PC via RDP. I can get to the login screen on the PC - however once I have entered the password and username, it says the RPC server is not available.

If I login to that PC using the local account on the PC and not the Domain account - I am able to login just fine.

This is a big problem for our remote users, using Pastel etc.

Anyone got any ideas as so what on the SBS 2003 domain is causing this??

It looks like it is a Domain issue though.

When the WAN is backup - everything is fine again...

Would greatly appreciate any help!

 

[kg648]

did you disable some services you wernt suppose to? however cached mode should work fine.

Tried safe mode?

 

[Priapus]

I haven't gone near the services as yet. I have checked that the RPC service was running, and it is.

When I disconnect the WAN connection - I am able to login to a PC via RDP for a minute or so, then after that - no more connections.

It seems the RPC service 'dies' after a minute of WAN going down.

It is sounding like DNS/ISA issue to me - but not too sure what though.

Thanks for the help.

 

[Will Gill]

what does the WAN connect to? is it a VPN to head office? if so is the primary DNS obtained from there? where is the DHCP scope allocated from?

sounds like you just need another DNS entry referencing the sbs box due to losing DNS/DHCP from the external network (be it internet or HQ)

could be way wrong but it sounds simple

 

[Priapus]

Hey Will,

Wan is a connection to the Internet. I think DNS comes from there, yes. I checked DNS and it is pointing to 192.168.20.1 which is the default gateway (LAN)

Am I missing something?

Many thanks for your time.