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Hvad sker der her?

Hej med jer

Jeg sad lige og gloede på min /var/log/messages efter en NS restart, og så
opdagede jeg at der stod nogle underlige ting. Følgende gentager sig tilbage
i loggen igennem et godt stykke tid :

Apr  3 13:49:45 ns identd[16315]: Connection from ns.xx.dk
Apr  3 13:49:45 ns identd[16315]: from: 1.2.3.4 ( ns.xx.dk ) for: 3373, 21
Apr  3 13:49:45 ns proftpd[16314]: ns.graffen.dk (ns.xx.dk[xxx.xxx.xx.xx]) -
FTP session closed.
Apr  3 13:49:46 ns telnetd[16332]: ttloop:  peer died: Invalid or incomplete
multibyte or wide character
Apr  3 13:49:46 ns sshd2[23516]: connection from "1.2.3.4"
Apr  3 13:49:46 ns sshd2[16349]: Remote host disconnected: Illegal protocol
version.
Apr  3 13:49:46 ns sshd2[16349]: protocol version not supported: 'Illegal
protocol version.'
Apr  3 13:49:47 ns identd[16367]: Connection from ns.xx.dk
Apr  3 13:49:47 ns identd[16367]: from: 1.2.3.4 ( ns.xx.dk ) for: 3380, 25
Apr  3 13:54:47 ns identd[17166]: Connection from ns.xx.dk
Apr  3 13:54:48 ns identd[17166]: from: 1.2.3.4 ( ns.xx.dk ) for: 3397, 21
Apr  3 13:54:48 ns proftpd[17165]: ns.xx.dk (ns.xx.dk[1.2.3.4]) - FTP
session closed.
Apr  3 13:54:49 ns telnetd[17183]: ttloop:  peer died: Invalid or incomplete
multibyte or wide character
Apr  3 13:54:49 ns sshd2[23516]: connection from "1.2.3.4"
Apr  3 13:54:49 ns sshd2[17200]: Remote host disconnected: Illegal protocol
version.
Apr  3 13:54:49 ns sshd2[17200]: protocol version not supported: 'Illegal
protocol version.'


Alle connections kommer fra ns selv og går tilsyneladende til ns... Jeg har
prøvet at køre en ps -ax for at se om der var en bruger der havde
installeret et eller andet underligt script, men jeg kunne ikke umiddelbart
se noget. Jeg har også siddet og kigget på outputtet fra top igennem 5-10
minutter for at se om det var noget der kun kørte engang imellem. Udover det
har jeg været igennem mine cron scripts - de ser ud som de skal. Er der
nogen der har et forslag til hvad der kan være årsag til disse underlige
connections?

/Jesper

 
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