Enable packets pass-through for port mirroring traffic

Important! This step is required only when passive recording is used (port mirroring).

MiaRec leverages port mirroring function on the switch. Some firewalls may block the network packets, which are mirrored to MiaRec server because they think that such traffic is malicious as it is not originally destined to that server (this is a traffic from IP Phone to IP PBX rather than to MiaRec server).

This may cause one of the following issues:

• one-way audio (when only one side of conversation is recorded)
• no audio is recorded at all (both sides of conversation are not recorded).

Windows Firewall (included into Windows XP, Vista, 7, 2003, 2008) doesn't have such problem. It passes through the mirrored network traffic to MiaRec server.

Other firewalls may block such traffic. Some of them has a configuration option, which allows to pass-through the traffic. Usually such option has name "Allow network bridged connections" or "Allow Internet sharing".

In worse case firewall doesn't have any option for passing through the network traffic and the only possible solution is to disable the firewall at all (or replace that firewall with other model). Usually, such firewalls are built-in to antivirus packages.

Step-by-step guides for some of known firewalls: