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I have found that the telnet service is running on a router. Telnet is publically known to be insecure.
How does one turn off telnet service on adsl routers? Please advise how one can disable telnet on BT Home Hubs?
Searches done (only 1 listed due to SU reputation): https://www.google.co.uk/search?q=disable+telnet+traffic
Information found (only 1 listed due to SU reputation): https://forum.backbox.org/security-advisories/netgear-telnet-enable-utility-allows-attackers-to-gain-root-priviledges/
unseen_rider
Posted 2015-09-10T21:03:47.477
Reputation: 121
This doesn't answer my question - I realise port 23 may be blocked, but I'm asking how the telnet service itself can be disabled? – unseen_rider – 2016-02-04T12:52:53.603
please let me know what your thoughts are on my question in my previous comment. Eg is telnet built into the hardware? If yes which part(s) of a router is this? – unseen_rider – 2016-06-20T19:28:12.767
@unseen_rider <shrug> It's part of the OS built into the router. – DavidPostill – 2016-06-20T20:00:23.607
Ok thanks. How about other services such as DNS, http, upnp /ssdp - are they typically part of the OS? – unseen_rider – 2016-06-22T07:36:15.090
@unseen_rider Of course. Remember that for a router/modem the OS is the firmware (which can be flashed to update on some routers). – DavidPostill – 2016-06-22T08:59:27.940
Know any good sites detailing how to alter / amend existing firmware? I would like to make some of my devices more secure by permanently disabling some services. – unseen_rider – 2016-06-22T15:49:31.353
@unseen_rider https://www.dd-wrt.com/site/, http://www.polarcloud.com/tomato are the main two.
– DavidPostill – 2016-06-22T15:55:07.530