Cisco RV220W User's Guide download pdf (Page 14)

IPsec VPN Router Configuration

Configuration Guide

5.8 The VPN tunnel is up but I can’t ping !

If the VPN tunnel is up, but you still cannot ping the remote LAN, here are a few guidelines:

 Check Phase 2 settings: VPN Client address and Remote LAN address. Usually, VPN Client IP address

should not belong to the remote LAN subnet

 Once VPN tunnel is up, packets are sent with ESP protocol. This protocol can be blocked by firewall.

Check that every device between the client and the VPN server does accept ESP

 Check your VPN server logs. Packets can be dropped by one of its firewall rules.

 Check your ISP support ESP

 If you still cannot ping, follow ICMP traffic on VPN server LAN interface and on LAN computer interface

(with Wireshark for example). You will have an indication that encryption works.

 Check the “default gateway” value in VPN Server LAN. A target on your remote LAN can receive pings but

does not answer because there is a no “Default gateway” setting.

 You cannot access to the computers in the LAN by their name. You must specify their IP address inside the

LAN.

 We recommend you to install Wireshark (www.wireshark.org) on one of your target computer. You can

check that your pings arrive inside the LAN.

1 2 ... 9 10 11 12 13 14 15 16

No comments

Cisco RV220W User's Guide Page 14