Avaya Administering Aura Session Manager Release 6.1 Manual de usuario Pagina 381

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Name Description
the string present in the “From” SIP
Header. Its value can be a complete or
partial SIP URI, for example,
[email protected] for a specific user, or
@avaya.com for a domain of users.
Mask Subnet mask used for the whitelist
operation.
Button Description
Save Saves the changed SIP firewall configuration
settings.
Related topics:
Configuring the SIP Firewall on page 375
Blacklist
SIP Blacklist enables you to block any known bad SIP elements. The SIP Firewall drops any
SIP packet matching a rule in the Blacklist.
Whitelist
SIP Whitelist enables you to allow any known good SIP elements. SIP Firewall allows any SIP
packets matching a rule in the Whitelist; no other filtering rule is applied.
Rules
Each SIP Firewall rule has the capability to send log or alarm messages to the Secure Access
Link (SAL). You can combine logging with other actions. Avaya recommends that you always
enable logging in each SIP Firewall rule to have a record of what actions were taken by the
SIP Firewall. Logging can be used independently (with the None action) and can generate logs
and alarms for flood-tracking. Note that SIP Firewall log messages are rate-limited. Each rule
can log a maximum of 1 log message per second. This rate-limiting of log messages provides
protection from flooding the logging system which may occur because of bad configuration of
the SIP Firewall rule.
You can apply SIP filtering and DoS protection to:
• SIP gateway/proxy connections (SIP Multiplexed connection/trunk). For example, a SIP
Firewall rule can set rate limit on a number of INVITE messages from a specific user within
a SIP connection from a SIP gateway without affecting the traffic from other users in that
gateway.
• SIP TLS connection. SM100 decrypts all the incoming SIP TLS packets before any
filtering rules are applied by the SIP Firewall.
• Reporting using the Secure Access Link (SAL)
Network Configuration
Administering Avaya Aura
®
Session Manager November 2010 381
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