JH Software Products

The simple yet powerful DNS server for Windows 9x/NT/2000/XP/2003 Thanks to DNS servers we surf the Internet using names such as "www.simpledns.com" instead of impossible to remember IP addresses. DNS servers translate these domain names into machine readable IP-addresses needed to locate the requested web-server on the Internet. With Simple DNS Plus you can hosts your own domain name, or simply speed up Internet access by running your own DNS server. Simple DNS Plus can easily be integrated with your web-site for ISP customer signup etc., or even a full web-based DNS solution. Simple DNS Plus is also a DHCP server, it comes with a DNS Look Up tool, and many other features... This internet software is listed under servers, dns tools.

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Simple Failover

Keep your web shop open with Simple Failover. Simple Failover is a new software based failover solution. The concept really is simple; it continuously monitors your servers to find out which are up and which are down, and then it dynamically updates your DNS records accordingly so that your domain name always points to a functional server. DNS records are updated directly via the DNS protocol (optionally using encrypted signatures for security), via WMI, via HTTP based dynamic IP updates, or via custom scripting. It can also send you e-mail notifications when problems are detected, and it can be extended through scripting to provide custom notifications, logging, and data capture. network, internet network monitoring commercial listed in network, internet network monitoring section.

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IE Timeout Tuner

This tool can adjust 3 'hidden' registry settings of Internet Explorer to control caching of DNS records, server connection timeout, and caching of server information. It can be useful to change these settings to very low values, especially when testing web-servers with quickly changing DNS records / IP addresses. For example in DNS Round Robin or Simple Failover setups. Internet Explorer does not honor and does not use the TTL (time to live) value provided in DNS records. Instead it caches all DNS records for a fixed period of time (as per this setting) - with one exception: After Internet Explorer has fetched a web-page, it does not immediately close the TCP connection to the web-server. By keeping the connection open, following requests to the same web-server can be executed faster. This is known as 'keep alive'. This setting affects both DNS caching and server connections ('keep alive') timeouts. Internet Explorer does not refresh DNS records if another page is requested from the same server domain name within this time interval - even if the DNS Cache Timeout setting has a lower value. In other words, DNS records timeout according to the higher value of this and the DNS Cache Timeout setting. However, server connections appear to timeout according to the lower value of this and the Keep Alive Timeout setting. So for the most predictable results, the value of this setting should be set lower than or equal to the DNS Cache Timeout setting, and higher than or equal to the Keep Alive Timeout setting. This is a freeware listed under network, internet browser tools category.

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