1. Log on through the SAP. Run transaction code OSS1 and go to Parameter -> Technical Settings.
2. Click on Change.
3. Fill in the saprouter1 fields with your local saprouter.
4. Enter the Saprouter at SAP.
sapserv can referred from the below information:
• sapserv1 (194.117.106.129) connection via Internet VPN
• sapserv2 (194.39.131.34) connection via Internet SNC
• sapserv3 (147.204.2.5) for customers with connection to Germany
• sapserv4 (204.79.199.2) for customers in America
• sapserv5 (194.39.138.2) for customers with connection to Japan
• sapserv6 (194.39.139.16) for customers in Australia and New Zealand
• sapserv7 (194.39.134.35) for customers in Asia
5. Test OSS1 connection in SM59