Overview:

Kerio Control includes several tools to troubleshoot connectivity issues, or to obtain information about a particular host or IP address. These tools are located under Status > IP Tools.

To use IP Tools, input a value and parameters into the appropriate fields. Choose the 'start' button and refer to the Command output window.

Ping

The ping tool is used to test connectivity between two hosts.

For example, if you believe a web site may be down, you can "ping" the server address to verify connectivity to that host.

Parameters for Ping

Target — IP address or hostname of the remote host

Protocol — IPv4 or IPv6

Count — the number of ping attempts

Size — default value is 56

Allow fragmentation — enable this option to allow the ping request to be fragmented by other routers if necessary

Traceroute

The traceroute tool is used to check the route (path) between two hosts.

For example, if you cannot ping a remote host, or the response time is very slow, you can use traceroute to determine where the problem may be introduced.

Parameters for Traceroute

Target — IP address or hostname of the remote host

Protocol — IPv4 or IPv6

Resolve addresses to hostnames — enable this option to display the reverse lookup name (if available) for each IP host in the path

DNS Lookup

The Domain Name System (DNS) translates easily memorized names into IP addresses. A DNS lookup is the process of querying a domain name server to resolve the IP address of a given hostname.

For example, if an application such as a web browser reports errors resolving a hostname, you can perform a DNS lookup to verify the response from a given DNS server.

Parameters for DNS Lookup

Name — The hostname or IP address to query (e.g. www.kerio.com)

Tool — specifies the used tool and output format (Nslookup or Dig)

Server — specifies the DNS server to query. The server list is populated from DNS servers assigned to each network interface.

Type — specifies the type of the DNS query (e.g. A, TXT, SRV…)

Whois

The Whois tool is used to obtain ownership information of an Internet resource, such as a domain name or IP address.

For example, if you would like to obtain ownership information about a suspicious intrusion attempt, you may perform a 'whois' lookup against the offending host.

Input an IP address or hostname into the 'Host' field to perform a whois query.