How to configure system-config-securitylevel-tui to permit only the internal LAN to access my ADSL router?

[James Wilkinson]

John Summerfield wrote (about ADSL routers):
> I would not make any such assumption. I know of one brand that has, by
> default, telnet open to the Internet.

So do I.

Helpful hint: with some of those, you can't actually switch off the
remote telnet; the device wants to either handle it itself or forward
port 23 somewhere. But you can forward port 23 to a non-existent host on
your local network, which has the same effect.

Consumer grade network devices: they're all the same, yet all suck in
their own weird and wonderful ways...

James.

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