Watchguard V10 User Manual page 285

Request General tab
This tab allows you to configure content filtering for client-
side general HTTP Request parameters.
Client Connection Idle Timeout
Maximum Allowed URL Length
Firebox Vclass User Guide
Specifies the time in seconds the proxy waits before
dropping an idle connection. Default is 110
seconds.
Specifies the maximum length in bytes of an
allowed outbound HTTP URL. Default is 1024
bytes. Some sites may use longer URLs than this;
however, the longer the URL, the greater the
chance that some systems may be vulnerable to
certain attacks.
Proxy Parameters Reference
253