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Test your network with Chrome Connectivity Diagnostics

Google's Chrome Connectivity Diagnostics app helps take the guessing game out of network troubleshooting.

By February 7, 2014


Apple enhances Wi-Fi Diagnostics in Mountain Lion

The diagnostics utility introduced in Lion gets new features and options in Mountain Lion.

By August 6, 2012


Weekly Utilities Update: WhatSize, CoolBook, VisualRoute, more...

Our Weekly Utilities Update report is a list of all the updates for many Mac utilities that have been released in the past week. This week we're taking a look at "VisualRoute", which graphically represents network activity and problems.

By November 20, 2009


mac.column.ted: The Non-Terminal Users Guide to Not Using Terminal: Part 2

Ted Landau
May 2009

A search of the Web reveals a wealth of information about how to use Mac OS X's Terminal application to solve problems or to enhance your system. However, as I explained in By June 5, 2009


DDoS attack affects half of GoGrid's customers

While minimizing the affect of the distributed denial-of-service attack, the hosting company continues to investigate a routing issue.

By March 31, 2009


Verizon DSL traffic blocking explained

As is so often the case, this Internet access problem was firewall related

By August 11, 2008


Verizon DSL is blocking outbound traffic

Verizon is blocking some outgoing connections on computers it connects to the Internet

By August 3, 2008


Sometimes the Internet just breaks

A detective story involving routers and firewalls.

By June 25, 2008


Peek-a-Blogspot: blocked again

Blogspot is gone again from here in Beijing and also according to on Twitter. As the last time it went out, a traceroute stops on a Chinese ISP ser

By May 3, 2008


Utilities Updates: Rember 0.3.3b; Virex 7 DAT 060823; Symantec NAV/SAV virus def Aug 23; more

Utilities Updates: Rember 0.3.3b; Virex 7 DAT 060823; Symantec NAV/SAV virus def Aug 23; more

By August 24, 2006