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The Day the Telnet Died

labs.greynoise.io

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Re: The Day the Telnet Died

#5
> Someone upstream of a significant chunk of the internet’s transit infrastructure apparently decided telnet traffic isn’t worth carrying anymore. That’s probably the right call.

Does this impact traffic for MUDs at all? I know several MUDs operate on nonstandard Telnet ports, but many still allow connection on port 23. Does this block end-to-end Telnet traffic, or does it only block attempts to access Telnet services on the backbone relays themselves?

Re: The Day the Telnet Died

#7
post #5

> Someone upstream of a significant chunk of the internet’s transit infrastructure apparently decided telnet traffic isn’t worth carrying anymore. That’s probably the right call. Does this impact traffic for MUDs at all? I know several MUDs operate on nonstandard Telnet ports, but many still allow connection on port 23. Does this block end-to-end Telnet traffic, or does it only block attempts to access Telnet service…

It wasn’t clear from the article but I assumed they were filtering for the attack specifically.

Since Telnet is totally plain text that would absolutely be easy to do right?

Re: The Day the Telnet Died

#9
telnet isn't just for ... telnet.

  $ telnet smtp.example.co.uk 25
  HELO me
  MAIL FROM: gerdesj@example2.co.uk
  RCPT TO: gerdesj@example.co.uk
  DATA
.. or you can use SWAKS! For some odd reason telnet is becoming rare as an installed binary.

Re: The Day the Telnet Died

#10
post #7
post #5

> Someone upstream of a significant chunk of the internet’s transit infrastructure apparently decided telnet traffic isn’t worth carrying anymore. That’s probably the right call. Does this impact traffic for MUDs at all? I know several MUDs operate on nonstandard Telnet ports, but many still allow connection on port 23. Does this block end-to-end Telnet traffic, or does it only block attempts to access Telnet service…

It wasn’t clear from the article but I assumed they were filtering for the attack specifically. Since Telnet is totally plain text that would absolutely be easy to do right?

Not at interconnect speeds
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