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View Full Version : attackalert: Possible stealth scan from unknown host


ckizer
08-25-2001, 06:35 AM
Aug 24 04:52:43 tempest portsentry[815]: attackalert: Possible stealth scan from unknown host to TCP port: 143 (accept failed)
Aug 24 04:52:43 tempest portsentry[815]: attackalert: Possible stealth scan from unknown host to TCP port: 143 (accept failed)
Aug 24 04:52:43 tempest portsentry[815]: attackalert: Possible stealth scan from unknown host to TCP port: 143 (accept failed)
Aug 24 04:57:09 tempest portsentry[815]: attackalert: Possible stealth scan from unknown host to TCP port: 143 (accept failed)

Aug 24 04:58:28 tempest stunnel[1977]: 127.0.0.1.2082 connected from 212.181.114.38:10402
Aug 24 04:58:28 tempest portsentry[815]: attackalert: Possible stealth scan from unknown host to TCP port: 143 (accept failed)
Aug 24 04:58:28 tempest last message repeated 11 times

Why do I keep getting these? What can I do to stop them? Last night my brand new Dell Server froze, is this the cause? and if so what can i do? please help

Palm
08-25-2001, 10:24 AM
Most of the time portsentry sends out false reports.

Lawrence
08-26-2001, 08:07 AM
Originally posted by Palm
Most of the time portsentry sends out false reports.

I don't know anything about portsentry, but I'm thinking that's not the best way to look at it. Presumption of problems might be beneficial here :D

Palm
08-26-2001, 10:42 AM
True, but don't get heart attacks when ever you see heack attempts in your logs.

Félix C.Courtemanche
08-26-2001, 12:31 PM
Check your portsentry settings and make sure that it does not freak out on port 143 (thats SSL / https traffic).

I don't think somebody would stealth-scan the same port over and over from the same IP address :)

most likely someone or soemthing tried to connect to your server using SSL and nothing replied to it... and portsentry logged it?