Articles

Traffic Rules

• Configuring Traffic Rules for Polycom phones provisioning

  Overview While provisioning Polycom phones after installation, the phones cannot be updated remotely. Polycom phones require specific ports to be opened in order to deliver Polycom software updates. T...

• Connecting Mitel VOIP phones

  Overview While connecting Mitel phones through Kerio Control firewall, specific settings should be applied. Mitel VoIP phones require specific network ports and DNS/IP address configuration to establi...

• Troubleshooting Email Client connection issues

  Overview While facing email sending and receiving issues on PCs connected to Kerio Control network, it is necessary to identify the problem in a proper way. Email services usually include IMAP, POP3, ...

• Allowing traffic from the remote IPsec tunnel over VLAN

  Overview While trying to set up access to the IPSec VPN network over the VLAN port, it might be needed to configure NATed traffic. In such a scenario, the remote part is accepting the traffic from a n...

• Default Traffic Rules and Best-practices

  Overview While trying to ping the firewall LAN interface from the LAN devices, the Kerio Control is not reachable. The connection is blocked by Firewall Traffic rules. This article provides instructio...

• Deny user group access to specific interface

  Overview When there is a requirement to create a traffic rule for denying access between a specific user group and Network interface, Kerio Control needs a certain configuration change. This article p...

• Explaining "Use other Internet interfaces when this interface is unavailable"

  Overview While having multiple Internet links configured in Load Balancing mode, you want to identify which Interface is being used when the specified interface goes offline. Traffic rules route the t...

• Exporting Traffic Rules into XLS spreadsheet

  Overview Where there is a need to export Kerio Control Traffic rules to XLS format, the specific procedure needs to be followed. The firewall communication is controlled by Traffic rules UI, but there...

• Exposing NVR CCTV resources to the public

  Overview If there is a need to expose the NVR services to the internet, a specific Kerio Control configuration needs to be applied. CCTV requires static public IP to be assigned by your Internet Servi...

• Out of free NAT ports: Unable to handle connection

  Overview While reviewing Error logs, the following entry appears frequently: (3) Out of free NAT ports: Unable to handle connection 172.16.X.X:57173 -> <external_country_IP>:443. (3) Out of free NAT p...