User`s guide
VPN Log
The VPN Log displays information for all client-to-site and site-to-site VPN tunnels. Use this log to investigate why VPN tunnels and PPTP
connections are disconnecting or not being established.
To see the messages for specific VPN connections, you can also filter the log by IP addresses.
Service Log
The Service Log lists specific errors and warnings for services that are not configured properly or are encountering problems. To restart these
services and debug any problems, you might need to contact Barracuda Networks Technical Support for assistance.
Authentication Log
The Authentication Log displays messages from the authentication service. This includes logins for the web interface and messages from the
various authentication methods.
For example, if a client is not able to access a service, the unsuccessful authentications are written into the log. Successful authentications are
also recorded.
HTTP Log Codes Overview
The following tables provide details on the codes that you might see on the page.LOGS > HTTP Log
TCP Codes
Code Description
TCP_HIT A valid copy of the requested object was in the cache.
TCP_MISS The requested object was not in the cache.
TCP_REFRESH_HIT An expired copy of the requested object was in the cache. Squid
made an If-Modified-Since request and the response was "Not
Modified."
TCP_REFRESH_FAIL_HIT An expired copy of the requested object was in the cache. Squid
attempted to make an If-Modified-Since request, but it failed. The old
(stale) object was delivered to the client.
TCP_REFRESH_MISS An expired copy of the requested object was in the cache. Squid
made an If-Modified-Since request and received a new object.
TCP_CLIENT_REFRESH The client issued a request with the "no-cache" pragma. ("reload" -
handled as MISS)
TCP_IMS_HIT An If-Modified-Since GET request was received from the client. A
valid copy of the object was in the cache (fresh).
TCP_IMS_MISS An If-Modified-Since GET request was received from the client. The
requested object was not in the cache (stale).
TCP_SWAPFAIL The object was believed to be in the cache, but could not be
accessed.
TCP_DENIED Access was denied for this request.
ERR Codes
Error Description
TCP_" refers to requests on the HTTP port (3128)