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Obsolete Releases => SME Server 7.x => Topic started by: cnp on July 30, 2006, 04:39:37 PM

Title: Can't connect to ISP in servergateway mode (solved)
Post by: cnp on July 30, 2006, 04:39:37 PM

I just installed SME 7 in servergateway mode.

The LAN side of it works fine.

The DHCP server on the SME works fine.

I can't seem to get a connection to my ISP.

Both NICs have been tested and are up and running.

The internet connection works fine through my router/switch.

My ISP is TDC KabelTV in Denmark so I'm connected through a Motorola Cable modem.

My ISP knows me on the MAC of my router/switch. After exchanging the router/switch to a NIC I will be prompted with an activating screen from my ISP. I have already tried this a few times when exchanging router, but that's several months ago.

It seems as though the SME doesn't look for my ISP's DHCP server, so I tried setting it up manually. I know my external IP, but have no idea on the gateway and the subnet I'm using so the intention was just to try to go for a fixed IP and then change back to DHCP. Unfortunately it didn't help.

Any idea on how to solve this problem?

Regards
Claus

Title: Can't connect to ISP in servergateway mode (solved)
Post by: MSmith on July 30, 2006, 11:04:43 PM

Try spoofing the SME server's external NIC's MAC address to match your router's, as here:

http://whoozoo.co.uk/mac-spoof-linux.htm

Title: Re: Can't connect to ISP in servergateway mode
Post by: CharlieBrady on July 31, 2006, 03:02:07 AM

Quote from: "cnp"

It seems as though the SME doesn't look for my ISP's DHCP server...

What have you *observed* which made it "seem" that way to you? Have you looked in the log files? Have you sniffed any traffic?

I think it's *much* more likely that SME does look for your ISP's DHCP server, but your ISP's DHCP server is not replying.

Have you spoken to your ISP?

Often if you change the router you use (and you are trying to use your SME server as a router) your ISP will need to clear the old router's MAC  address from their configuration before your new router can obtain an address.

Title: Can't connect to ISP in servergateway mode (solved)
Post by: cc_skavenger on July 31, 2006, 05:29:21 AM

try this:

1.) disconnect the power from your cable modem.  
2.) connect the server to the modem.  
3.) power on the modem.  

Unless you had to give them the mac address of your router, your cable modem is just cloning the mac address that it is connected to.  you clear this by powering it down and back up.

HTH

Title: Can't connect to ISP in servergateway mode (solution)
Post by: cnp on August 05, 2006, 11:31:28 PM

Thanks for all your valuable input.

Sorry for replying this late, but work didn't leave me time to deal with my private server during the past week.

I didn't have much luck in spoofing the MAC address of the NIC to match the one of my router so I did it the other way round just to see if my ISP would send me to the registration site as they should and as they have done earlier when I exchanged my router.

For some strange reason this time my ISP's system didn't send me the registration site when connecting through new hardware so I called their support.

After their support had manually registered the MAC og the NIC I just needed to restart modem, router and server to get connected.

Regards
Claus