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Port 23 has 50+ unique hosts ?


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#1 bimmerfunf

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Posted 21 September 2015 - 10:47 AM

Hello,

 

We have Comcast for business, and we have received a call saying we have our IP address attacking mail server via port 23?

 

When I spoke to the security department they said port 23 has little over 50 unique hosts just chilling on that port. I was told to scan the network and change passwords.

 

Does anyone know more details on this? Port 23 with that many hosts, I know its Telnet port.



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#2 shelf life

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Posted 25 September 2015 - 05:01 PM

hi,

 

Some examples of (old) trojans that may use port 23,  Not saying you have any of these. You seem to have a different problem. Sending spam through your email server, port 25 via the telnet command.

 

port 23 ADM worm, Aphex's Remote Packet Sniffer , AutoSpY, ButtMan, Fire HacKer, My Very Own trojan, Pest, RTB 666, Tiny Telnet Server - TTS, Truva Atl

 

http://www.spamsoap.com/how-to-manually-send-an-email-message-via-telnet-to-port-25/


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