31.9 The SSL VPN Connection Is Successful But There Is No Data Transfer

Possible Cause: If this issue appears in Kiosk mode, the private address specified during the server configuration might be incorrect.

Action: In the Administration Console, click Devices > SSL VPNs > > Edit > Gateway Configuration, then check the private address configuration. Make sure that this is the IP address of the private interface of the SSL VPN server.

Possible Cause: This issue might occur in both Kiosk and Enterprise modes of SSL VPN. If the SSL VPN server is behind a NAT, the external IP address specified during server configuration might be incorrect.

Action: In the Administration Console, click Devices > SSL VPNs > > Edit > Gateway Configuration. Make sure that the external IP address is configured to be the IP address of a NAT through which the external user on the Internet can access the SSL VPN server.

Possible Cause: If this issue appears in Enterprise mode, it could be because the NAT configuration is wrong.

Action: At the command prompt, enter iptable -L to check the configuration details. For more information, see Section 11.0, Configuring the IP Address, Port, and NAT.

Possible Cause: If this issue appears in Enterprise mode, it could be because the router configuration is wrong.

Action: Check the router configuration. For more information, see Section 11.0, Configuring the IP Address, Port, and NAT.

Possible Cause: If this issue appears in Enterprise mode, the TUN interface might be down.

Action: At the command prompt, enter ifconfig to check if the TUN0 interface is down. If it is down, enter the etc/init.d/novell-sslvpn restart command to restart the SSL VPN services.

If you are using a 64-bit machine and have changed the TUN interface, check to make sure the interface is up. If it is down, enter the etc/init.d/novell-sslvpn restart command to restart the SSL VPN services.