Is someone trying to hack my server?

Is someone trying to hack in to my server? This was in my logWatch emailed to me, it was listed 5 times. I changed the name of my server here to host.myhost.com.

host.myhost.com (ip-56.net-81-220-159.grenoble.rev.numericable.fr[81.220.159.56]) - FTP no transfer timeout, disconnected

Thanks!

 

 

 

 

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