Tools for Troubleshooting Connections
Most of the tools mentioned here are available on the Internet.
Pinging
Utilities like MacTCP Ping, MacPing, MacTCP Watcher, and IPNet
Monitor can be used to send packets from one IP host to another
to check the reliability of the connection.
Tracing Route
Some tools such as MacTCP Watcher, OT Tool, IP NetMonitor, and
WhatRoute allow you to actually trace the route that a packet
takes between two hosts, showing the IP address of the routers
that handle the packet along the way. This kind of utility could
be useful if, for example, you were trying to determine why one
device on the network can reach a certain host, but another cannot.
It could also be used to determine why a particular connection
is slow.
Name Resolving
Many utilities, like MacTCP Watcher, OT tool, IPNetMonitor, allow
you to enter a domain name and resolve it into its IP address
or conversely. DNS Lookup also lets you specify a particular DNS
server that you want your query sent to. This can be useful if
you need to see whether a particular DNS server is able to resolve
a name (or to find out if a certain device really is a DNS server).
Other IP Applications
If none of these utilities are on hand, you can still try to work
with what you have. For example, Fetch could be used if the host
you're trying to reach is likely to also be an ftp server. NCSA
Telnet can be used to try to reach either a router or a DNS server,
since these services often support telnet sessions as well. Both
of these applications ship with AICK, and are also available on
the Internet for downloading.
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