VPN setup combination IP Office (Avaya), MacOS X Server and Speedtouch

[sjjan]

Hello,

I have a question related to a setup which is as follows:
- ADSL connection going to Speedtouch ADSL modem/router with NAT to private IP range, port forwarding to internal hosts
- MacOS X Server 10.4 with VPN server component acting as a VPN server (IPSEC/PPTP)
- Avaya IP Office (IPO) PABX which is connected over IPSEC tunnel to another remote IP office PABX

To enable the connection between the IPO's, within the Speedtouch ADSL modem/router I have forwarded the portnumbers like e.g. 500 to the internal host being the Avaya IPO.

Now for another application I need someone to access from the outside the VPN server running on the MacOS X Server, where the VPN server can authenticate the user and then provide access to the local network. However, the IPSEC ports like port 500 are catched at the Speedtouch and forwarded already to the Avaya IPO PABX, so I cannnot also route this information also to the VPN server running on the MacOS X Server.

Is there a way out to make this possible? Or would I need other hardware like maybe a Juniper SSG5 Firewall/VPN server? Or is there another smart solution?

Any suggestions are welcome.

SJ

 

[burtsbees]

For IPSEC, you could set it up to use UDP port 10000 rather than TCP...

Burt

 

[sjjan]

Maybe stupid question, but how? On the MacOS X Server side there is not place I can configure the VPN server component to use different port numbers (of course under the hood it is Linux, but that is too technical for me). There is a Windows outside machine that wants to make a VPN connection to the MacOS X machine, so that will use most likely PPTP.
On the ADSL router I can configure different ports to go to other internal servers/devices?

 

[burtsbees]

Yeah, I'm not too hip on the Mac thing...it is a BSD kernel it runs on top of, so you may want to post this in the Mac forum...
If it were a Cisco Remote Access VPN, I could tell you how. If you could use Cisco VPN Client, you can change which port it uses to connect, and then forward the appropriate port(s).

Burt