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IPNetMonitorX is a network troubleshooting toolkit for debugging Internet service problems and optimizing performance. Featuring 23 integrated tools, IPNetMonitorX is designed to help you quickly locate where the problem is and gather data which can be used to solve the problem either directly or through your Internet Service Provider.

TCP/IP tuner for improving network performance and compatibility.
IPNetTunerX is a modest application that allows you to optimize TCP/IP network performance under Mac OS X by tuning internal TCP/IP parameters to match your network environment. IPNetTunerX supports over 50 adjustable parameters including the TCP Window Size, Time Out intervals, Maximum Segment Size, and MTU.

IPNetRouterX is a flexible router, firewall, and network utility including NAT with inbound port mapping, a built-in DHCP Server, DNS Server, Ethernet bridging, transparent proxying, load balancing, automatic failover, and bandwidth accounting.

IPNetSentryX is an advanced firewall intrusion detector that includes bandwidth allocation, bandwidth accounting, Ethernet bridging, AirPort configuration, and detailed logging. IPNetSentryX supplements and is fully compatible with Apple's own firewall in OSX while providing additional capability to solve network problems users may encounter.