misc/112207: I have suspicion that somebudy use my server like zombie server.

[Maksym Kuvyklin]

>Number:         112207
>Category:       misc
>Synopsis:       I have suspicion that somebudy use my server like zombie server.
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sat Apr 28 14:20:04 GMT 2007
>Closed-Date:
>Last-Modified:
>Originator:     Maksym Kuvyklin
>Release:        FreeBSD 5.5 STABLE
>Organization:
Embassy of Ukraine
>Environment:
FreeBSD mail.ukremb.com 5.5-RELEASE FreeBSD 5.5-RELEASE #6: Mon Apr 23 14:41:21 EDT 2007     root at mail.ukremb.com:/usr/obj/usr/src/sys/MYKERNEL  i386
>Description:
Sorry for my pure English. I am new in this community.
I had detected that somebody tryed to penetrate via ssh into my server. When I had changed the port all this attempts were finished. Then server notified me about that somebody use my IP address and after that my network adapter had down. I had changed it to another one and the server had started work again. I have static IP address.But, now my connection is very slow. I have looked throught the logs and I had not found any tracks of penetration. Please, help me to solve this problem.
>How-To-Repeat:

>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted: