Port triggering has been configured on a wireless router. Port 25 has been defined as the trigger port and port 113 as an open port. What effect does this have on network traffic?

Port triggering has been configured on a wireless router. Port 25 has been defined as the trigger port and port 113 as an open port. What effect does this have on network traffic?

  • Any traffic that comes into port 25 allows outgoing port 113 to be used.
  • All traffic that is sent into port 25 to the internal network will also be allowed to use port 113.
  • Any traffic that is using port 25 going out of the internal network will also be allowed to transmit out port 113.
  • All traffic that is sent out port 25 will open port 113 to allow inbound traffic into the internal network through port 113.
    Explanation:

    Port triggering is used to allow inbound traffic through the firewall based on outbound traffic. The trigger occurs when an application makes use of a specific port on the internal network. An external port on the firewall is then opened. This allows for temporary passage of traffic through inbound ports to a specific device.