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SAProuter + VPN Tunnel

Hello Gurus,

my company wants to set up connection between our SAP Systems and SAP.

We already have a working VPN Tunnel between our IPfire and the VPN-Firewall of SAP (194.39.131.174). (Ping on 194.39.131.174 succesful, ping on 194.117.106.129(sapserv1) not)

SAProuter is installed as service on a Windows XP machine. SAPROUTTAB is P * * * for testing. SAPRouter service runs without problems.

The network looks like this:

SAP <--> SAP-VPN-Firewall <---> OUR-VPN-Firewall <--> SAProuter <--> OUR-SAP-Machines.

I have 2 public IPs for this scenario. One is used for the VPN-Tunnel. The other should be used for SAProuter.

SAProuter is connected to OUR-VPN-Firewall via local IP. SAPRouter is able to ping SAP-VPN-Firewall(194.39.131.174). SAP-Machines are able to ping SAP-VPN-Firewall(194.39.131.174). Nobody is able to ping 194.117.106.129(sapserv1).

Transaction OSS1 in SAP-Machines is configured but is not able to connect.

So my questions are:

- How should i give my SAProuter the public IP? Does it need a direct internet connection? Why do I need VPN then?

- Is there anything I oversaw?

- Am I following the right concept?

- What about the IPFire port forwarding? What ports are needed? Do I forward them to SAPRouters public IP or the local?

Any help is very, very welcome. Thank you for your attention.

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  • Posted on Jun 02, 2012 at 04:18 PM

    Hello Steven,

    Did you already take a look at the SAP Notes 486688, 35010 and 33135?

    And the SAPROUTTAB rule "P * * *" actually does not open all the ports. For security reasons, the saprouter interprets the port definition "*" only as commonly used SAP ports (e.g., 3200 to 3299).

    To open other ports (e.g., 23, for remote telnet access) you need to add an explicit rule for that.

    Regards,

    Isaias

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