Problem with "in rotation" option

[panthera]

Hi;

On my internet server, I have wingate installed. On this machine there are 3 ethernet cards. 1 ethernet card is connected to the switch of my network. The other two ethernet cards are seperately connected to two DSL modems.

In wingate, I have configured the two gateways (any gateway & any ip adress) to be used in rotation. The problem is that wingate always uses the same gateway (gateway1) for internet connections, but it does not use the other one. When I turn off the DSL modem in gateway1, finally it uses gateway2. However, when both connections are alive, it always uses the 1st one, even when I load traffic from several nodes in my network.

What can I do to solve this problem?

Thank you.

[Nev]

Hi,

At a glance, I'd say it is working as intended, until one of the links fails then it will alternate to the other, or at least that is how I understand the process.

What you could do is divert traffic by cloning say the WWW Proxy, put it on another port and set desired clients to use that connection and its unique gateway, such as gateway2.

[adrien]

Hi

these DSL modems - do they use PPPoE? If so they would show up as dialup connections in your OS. Or are they DSL/NAT devices?

If the former and you're on Vista or later, then gateway overriding doesn't work. It's (we believe) a bug in Vista / Windows 2008 / Windows 7 relating to improperly failing network sends based on source IP. We've not been able to figure out a way around it.

It doesn't occur if the connections aren't "dialup". If you are using DSL/NAT connected over ethernet, then it should work.

Regards

Adrien

[panthera]

Thanks for the replies.

The two modems are router DSL modems. They use PPPoE but they don't appear as dial-up in the OS. They make their own connections to the internet (they are configured such that the connection is always alive) and they appear as LAN connections in the OS. Anyway, I am not using Vista. Wingate is installed on XP.

Wingate is always using the 1st gateway. Unless gateway1 is down, it never uses gateway2.

Regards;

[adrien]

OK, have you double checked that the scheme selected is "use all specified connections in rotation" rather than "Use specified connections in priority order (failover)"

because the behaviour you're describing fits the latter.

One other thing, the traffic is going through the proxy correct?

And finally - you did install ENS when you installed WinGate?

Regards

Adrien

[logan]

Check if the Application Layer Gateway (ALG) service is running, and if so disable it. ALG overrides WinGate's gateway selection.

[Alen]

logan, adrien
As I remember you have a restriction for 2 simultaneously working connections and it was either for Proxy connections or for NAT. I just can't remember (or it was for the bandwidth control?!)...

[panthera]

"And finally - you did install ENS when you installed WinGate?"

I think I have installed ENS, but I'm not 100% sure. How can I check it?

Also, can you tell me how can I check ALG service is not running.

Thanks;

[adrien]

"And finally - you did install ENS when you installed WinGate?"

I think I have installed ENS, but I'm not 100% sure. How can I check it?

Under extended networking in GateKeeper, it should show as "installed and active"

Also, can you tell me how can I check ALG service is not running.

Thanks;

Check in task manager. if alg.exe is showing there, it's running.

Regards

Adrien

[panthera]

ENS is "installed and active".

ALG service was running but now I have stopped and disabled it.

However, I still have the same problem. It doesn't use both connections.

[panthera]

By the way;

Is there anything that I must do in configuration of the clients?

All of the clients in my network are configured to use gateway 192.168.1.1 (ip adress of the server on which wingate is installed). Is there any other configuration that should be made? Am I missing something?

Thanks;

[panthera]

OK now I have discovered that my configuration was wrong. I did not activate transparent proxying but I configured my clients to simply use 192.168.1.1 (wingate server machine) as default gateway, as a result the traffic was not going through proxy. That was why it used only one gateway.

However, when I try to use it through proxy (i.e. from IE browser settings) now I can't connect to the internet. I tried to activate transparent proxying for port 80 in gatekeeper, but still I can't connect to the internet from my clients. Another symptome is that when I try to ping 192.168.1.1 from client computers I get no response. Wingate server is not reachable.

Please help me solve this problem.