I am getting notices that a RedHAT server of mine is probing other
networks. I need some advice on how to prevent this and find out what is
occurring.The message info I received is below. I have since made sure the
firewall is running and unnecessary ports including ftp are off. Any help
to get on top of this would be greatly appreciated. I am fairly new, so
please be specific.


>Mar  4 02:50:27 x.x.x.x:21 -> x.156.3.21:21 SYN ******S*
>Mar  4 02:50:27 x.x.x.x:21 -> x.156.3.22:21 SYN ******S*
>Mar  4 02:50:27 x.x.x.x:21 -> x.156.3.23:21 SYN ******S*
>Mar  4 02:50:27 x.x.x.x:21 -> x.156.3.30:21 SYN ******S*
>Mar  4 02:50:27 x.x.x.x:21 -> x.156.3.32:21 SYN ******S*
>Mar  4 02:50:27 x.x.x.x:21 -> x.156.3.37:21 SYN ******S*
>Mar  4 02:50:27 x.x.x.x:21 -> x.156.3.38:21 SYN ******S*



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Raymond Norton
Little Crow Telemedia Network
320-234-0270