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SAMBA (File Sharing) isn't necessary unless you are planning on being a file share server.

RPCBIND (For NFS) isn't necessary unless there is going to be network file share links to be made.

Basically, look for what is running on the machine and disable what isn't necessary for what you need at this time.

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Make sure your kernel is up to date and still supported.

Double check your security after an Application Install

Always check your system after a new application has been installed.

Some may open up ports to listen to that you did not have open before or set up a new account.

If this is the case, go through Security Checklist and make sure everything is secure.

Check how exposed you are

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You can use this to check your machine for what ports are open.

nmap may require having sudo or root access at times for some of the functions.

You can also make use of http://nmap.online-domain-tools.com/ to test it from the internet side.

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