Install guide

10 VoIP Phone Calls and the Firewall Release Note
Software Version 2.7.4
C613-10444-00 REV A
New and Modified Commands
The following commands are new in Software Version 2.7.4:
■ enable firewall sipalg
■ disable firewall sipalg
The following commands include new features in Software Version 2.7.4:
■ add firewall policy rule
■ enable firewall policy debug
■ disable firewall policy debug
New parameter options are shown in bold in the command syntax.
The following show commands include new information in Software Version
2.7.4:
■ show firewall
■ show firewall policy
New entries are shown in bold in the example output.
enable firewall sipalg
Syntax ENAble FIREwall SIPAlg
Description This command enables the Session Initiation Protocol (SIP) Application Layer
Gateway (ALG). The SIP ALG allows SIP to set up sessions through the
firewall, when used in combination with NAPT firewall policy rules to modify
SIP packets. The SIP ALG is disabled by default.
disable firewall sipalg
Syntax DISable FIREwall SIPAlg
Description This command disables the Session Initiation Protocol (SIP) Application Layer
Gateway (ALG). The SIP ALG is disabled by default.