Operating Manual

Operator’s Manual M365-491
6-2 Chapter 6
October/2005 Troubleshooting
6-2.2 IP Address Mismatch
Before you troubleshoot this problem, make sure that problem described in paragraph 6-2.1 does not
exist.
Symptoms
• The client station is unable to access network resources, Web, or e-mail, or aircraft network is
unable to access ground-based network resources.
• The client station is unable to renew its IP address.
Cause on the CAP
• IP address configuration on CAP is not compatible with network and/or client stations. (Refer to
operating software operator’s manual.)
Causes on the client station
• TCP/IP is not installed or not properly configured.
6-2.3 Wireless Client Stations Cannot Connect to the Internet Via the CAP
Before you troubleshoot this problem, make sure that problem described in paragraph 6-2.2 does not
exist.
Symptoms
• Web pages time out.
• E-mail cannot be retrieved from external e-mail servers.
Causes on the CAP
• Network Address Translation (NAT) and/or Virtual Private Network (VPN) is not compatible
with network and/or client stations. (Refer to operating software operator’s manual.).
• Security filters are enabled.
Causes on the client station
• Browser not installed or configured properly (set to use a proxy server, set to use dial-up
connection instead of LAN).
• Client station may not be on the same subnet as the CAP.
• No VPN client software is installed.
• VPN client software installed but not started.
• VPN client software has wrong username, password, or IP address set.
Other cause
• DHCP server on LAN is not returning the IP address of the CAP as gateway.
• ISP is down.