benjojo.co.uk

benjojo posted 18 Feb 2025 20:03 +0000

I wonder what the history of the Cisco CLI's default of "Any unknown command is now a (slow) DNS lookup because maybe you want to telnet ?" is.

It seems to be on almost every single IOS image I've ever touched, so it's got to have been implemented very early

The amount of devices that must have no ip domain-lookup at the top of the config must be staggering. Why does it remain this way.

It's 100% one of the more mundane uses for a time machine

benjojo replied 19 Feb 2025 00:39 +0000
in reply to: https://oldbytes.space/users/drscriptt/statuses/114027669774555886

@drscriptt Thank you for explaining my post back to me

benjojo replied 18 Feb 2025 20:07 +0000
in reply to: https://benjojo.co.uk/u/benjojo/h/247NRsf1Y3znpQ442X

I appear to have found the mythical users of that CLI shortcut

May god help all of you

womble@infosec.excha.. replied 18 Feb 2025 20:13 +0000
in reply to: https://benjojo.co.uk/u/benjojo/h/3z1qSttn81ry19d9VM

@benjojo there are some things even god wants nothing to do with.

billhulley@mastodon... replied 18 Feb 2025 20:35 +0000
in reply to: https://benjojo.co.uk/u/benjojo/h/3z1qSttn81ry19d9VM

@benjojo I have very misty memories of using the ip host command to map names to async ports when using 2500s as terminal servers. I suspect that's where this stems from.

zev@honk.bewilderbee.. replied 18 Feb 2025 21:15 +0000
in reply to: https://benjojo.co.uk/u/benjojo/h/3z1qSttn81ry19d9VM

@benjojo Perhaps these are the same people who added the command-not-found package to Ubuntu's default set. (Not exactly the same I suppose, but usually the first thing I torch on any new installation I encounter.)

m@helvede.net replied 18 Feb 2025 20:06 +0000
in reply to: https://benjojo.co.uk/u/benjojo/h/247NRsf1Y3znpQ442X

@benjojo But worthwhile.

tmcfarlane@toot.comm.. replied 18 Feb 2025 20:07 +0000
in reply to: https://benjojo.co.uk/u/benjojo/h/247NRsf1Y3znpQ442X

@benjojo I'm trying to remember if they retrofitted it into the PIX OS.

grawity@social.treeh.. replied 18 Feb 2025 21:31 +0000
in reply to: https://benjojo.co.uk/u/benjojo/h/247NRsf1Y3znpQ442X

@benjojo Didn't it start as a dial-in terminal server thing before evolving into a router OS?

FritzAdalis@infosec... replied 18 Feb 2025 21:57 +0000
in reply to: https://benjojo.co.uk/u/benjojo/h/247NRsf1Y3znpQ442X

@benjojo
I could have sworn that the cisco terminal servers I dialed into in the '80s required 'open' to telnet, but as far back as I can find (ios 6.1, May 1987) you just typed the hostname or ip address at the prompt.