Take the 2-minute tour ×  I just finished installing Ubuntu
Server 12.10 on an Asus Eee PC 1000H (to be used as a home
server/sandbox) from USB. I installed this software during
installation:    1. OpenSSH server   2. LAMP server   3. Samba
file server   4. Virtual Machine host  I won't use 2, 3 or 4 for
a while though. Can/should I turn these off somehow?    • I have
turned home directory encryption on.   • Security updates are
installed automatically.   • I have chosen a strong password for
the single user.  I have never plugged in the internet cable so
far. Before doing so I'd like to ask:  What can/should I
do/install to increase security before connecting to the
internet?  Firewall? Fail2ban? Users/Passwords? Encryption?
Enable/Disable functionality? etc.  I'm sorry if you get this
question a lot. I've searched around quite a while, but it still
feels like I might overlook something important.  share|improve
this question  migrated from serverfault.com Nov 27 '12 at 13:40
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