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COMfortel 1400 IP/2600 IP/3600 IP - Firmware V2.6 - Operation/Configuration - V05 09/2016
Settings
Network
Enter RTP port range.
Note:
You will find an overview of the PBX ports in the Configuration
Manager of the PBX under
Overwievs > Ports
.
Enable blacklist and whitelist
As soon as the phone is connected to the Internet, there is a risk of attacks
via the Internet, for example DoS (Denial of Service) attacks, or attacks
aimed at the internal SIP server.
To prevent this, you can enable the blacklist.
Enable blacklist and whitelist
If traffic from a particular IP address is judged as being too high - and
therefore probably malicious- this IP address is blocked. This means
accesses from this IP address to the telephone are blocked (block time).
Initially this block lasts for five minutes. A note appears in the status line on
the home screen. During the block time the telephone continues to monitor
traffic from this IP address. If traffic from this IP address to the PBX
continues to be too high, the single block time is extended (block time
restarts).
Important:
Switching off the IP blacklist and whitelist or restarting the
telephone deletes all the entries in the locking list.
Network-based access attempts, such as the number of data packets per
second or SIP authentication failures are monitored and evaluated.