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Q4
VPN communication
cannot be established
Symptom
In the top page
of the "Basic
configuration
page", the
message
"Connected" is
not displayed for
the IPsec tunnel
connection.
VPN
communication
cannot be
established
through IPsec
connection.
Cause
Internet connection cannot be
established.
Communication cannot be
established with the destination
of IPsec connection.
IPsec connection is not
established.
Incorrect routing information
has been configured.
The setting is not correct
in the PC connected to the
destination LAN.
Remedy
• Check whether the setting for Internet
connection has been configured.
• Troubleshoot according to the
explanation of "Q3 Internet
connection cannot be established"
(page 171).
Execute the ping command to the
destination IP address of IPsec, and
check whether a response is returned.
If no response is returned, check
whether communication is enabled in
the destination device.
• Check whether the same pre-
shared key as the IPsec connection
destination is specified.
• Check whether the correct IP address
and correct name are specified in
the method used to identify the
destination.
• C h e c k
w h et h er
authentication algorithm and
encryption algorithm as the IPsec
connection destination are specified.
Configure the correct destination
LAN network address for the routing
information.
• Check the setting of the application
software used for communication.
• If the Firewall function is enabled in
the PC, change the Firewall setting
so as not to block packets used for
communication.
In Windows 7, on the window that
appears by clicking "Start" - "Help
and Support", enter "Firewall" in the
search field, and carry out a search.
Relevant information is displayed.
Troubleshoot according to the
instruction.
FWX120 Operation Manual 173
Troubleshooting
8
t h e
s a m e
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