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Cisco ASA 5500 Series Configuration Guide using ASDM
OL-20339-01
Chapter 48 Configuring Connection Settings
Configuring Connection Settings
• H.225—Modifies the idle time until an H.225 signaling connection closes. The H.225 default
timeout is 1 hour (01:00:00). Setting the value of 00:00:00 means never close this connection. To
close this connection immediately after all calls are cleared, a value of 1 second (00:00:01) is
recommended.
• MGCP—Modifies the timeout value for MGCP which represents the idle time after which MGCP
media ports are closed. The MGCP default timeout is 5 minutes (00:05:00). Enter 0:0:0 to disable
timeout.
• MGCP PAT—Modifies the idle time after which an MGCP PAT translation is removed. The default
is 5 minutes (00:05:00). The minimum time is 30 seconds. Uncheck the check box to return to the
default value.
• SUNRPC—Modifies the idle time until a SunRPC slot is freed. This duration must be at least 1
minute. The default is 10 minutes. Enter 0:0:0 to disable timeout.
• SIP—Modifies the idle time until an SIP signalling port connection closes. This duration must be at
least 5 minutes. The default is 30 minutes.
• SIP Media—Modifies the idle time until an SIP media port connection closes. This duration must
be at least 1 minute. The default is 2 minutes.
• SIP Provisional Media—Modifies the timeout value for SIP provisional media connections, between
0:1:0 and 1193:0:0. The default is 2 minutes.
• SIP Invite—Modifies the idle time after which pinholes for PROVISIONAL responses and media
xlates will be closed. The minimum value is 0:1:0, the maximum value is 0:30:0. The default value
is 0:03:00.
• SIP Disconnect—Modifies the idle time after which SIP session is deleted if the 200 OK is not
received for a CANCEL or a BYE message. The minimum value is 0:0:1, the maximum value is
0:10:0. The default value is 0:02:00.
• Authentication absolute—Modifies the duration until the authentication cache times out and you
have to reauthenticate a new connection. This duration must be shorter than the Translation Slot
value. The system waits until you start a new connection to prompt you again. Enter 0:0:0 to disable
caching and reauthenticate on every new connection.
Note Do not set this value to 0:0:0 if passive FTP is used on the connections.
Note When Authentication Absolute = 0, HTTPS authentication may not work. If a browser initiates
multiple TCP connections to load a web page after HTTPS authentication, the first connection
is permitted through, but subsequent connections trigger authentication. As a result, users are
continuously presented with an authentication page, even after successful authentication. To
work around this, set the authentication absolute timeout to 1 second. This workaround opens a
1-second window of opportunity that might allow non-authenticated users to go through the
firewall if they are coming from the same source IP address.
• Authentication inactivity—Modifies the idle time until the authentication cache times out and users
have to reauthenticate a new connection. This duration must be shorter than the Translation Slot
value.
• Translation Slot—Modifies the idle time until a translation slot is freed. This duration must be at
least 1 minute. The default is 3 hours. Enter 0:0:0 to disable timeout.
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