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  • Adding DHCP Options

    Overview This article explains how you can configure custom DHCP options. For more information, refer to the Dynamic Host Configuration Protocol (DHCP) and Bootstrap Protocol (BOOTP) Parameters. Defau...

  • Logo Displaying Incorrectly in Firefox

    Overview The logo is not displayed correctly on some devices due to non-standard logo size. This article provides the steps required to rectify this by using the command line in Kerio Control.   Preco...

  • Error: 'Problem with default gateway' When Logging to Kerio Control Webadmin

    Overview There are instances where due to the specific configuration setup, the following clickable warning is displayed when logging in to Kerio Control Webadmin: Problem with default gateway     On ...

  • User is Being Prompted for Credentials While Using NTLM

    Overview In Kerio Control, users are prompted for credentials while using NTLM. They enter the details, however, after a few seconds, the pop-up re-appears. Note that the authentication is already set...

  • Using services in Kerio Control

    Overview Services are defined by a communication protocol and by a port number (e.g. the HTTP service uses the TCP protocol with the port number 80). You can create groups of services that simplifies ...

  • Configuring URL groups in Kerio Control

    Overview: URL groups enable the administrator to define content rules. For example, to disable access to a group of web pages, you can define a URL group and assign permissions to the URL group, rathe...

  • Configuring DHCP server in Kerio Control

    Overview Kerio Control includes a DHCP server. The DHCP server assigns clients IP addresses within a predefined scope for a certain period (lease time). If an IP address is to be kept, the client must...

  • Configuring a routing table in Kerio Control

    Overview Kerio Control allows you to view and edit the IPv4 and IPv6 routing tables. Kerio Control works with the operating system's routing table as well as with the static routes created in Kerio Co...

  • Configuring the reverse proxy in Kerio Control

    Overview: With the reverse proxy, you can provision more than one web server placed behind Kerio Control. A single public IP address is used on a default port (80 for HTTP and 443 for HTTPS). Kerio Co...

  • Bandwidth management - setting the speed of the link in Kerio Control

    Overview: Typically, problems with bandwidth management are caused by the Internet link speed being set incorrectly. To provide the necessary bandwidth for mission-critical applications, Kerio Control...