telnet

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Philip continues to play devil’s advocate / script kiddie for my telnet URL handler. My input checker allowed host/port definitions to begin with a hyphen character. That’s an invalid domain name, so I ignored the possibility that someone might try it. Philip used it to pass a switch to the telnet/ssh command.

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After I wrote yesterday’s post, Philip reminded me of the dangers of not validating your inputs. Here is a better telnet/ssh handler which checks the URL passed to it.

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Firefox’s telnet protocol handler in Linux stopped working some time after version 3.0. I manage a network of switches, routers, and other devices with command-line interfaces. Wouldn’t it be nice to be able to click on telnet:// or ssh:// URLs again?

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