[Security] Nearly had heart attack ! :-O

[Vincent Trouilliez]

> According to http://packages.ubuntu.com/
> usr/sbin/rpc.mountd is only supplied by two packages
> nfs-kernel-server and nfs-user-server
> Check to see which of those are installed; 

Ah, yes, it appears I have nfs-kernel-server installed. nfs-user-server
isn't installed. I guess it was installed automatically when I enabled
file sharing for the first time, using Nautilus, a while ago.

> uninstalling it should close that port up.

I didn't uninstall it, I only went to System->Administration->Services,
and unchecked both the NFS and SMB file sharing services...

> Then post the output of "sudo netstat -antup | grep ':\*'" again :)

...then I ran that command again, and indeed port 668 isn't listed
anymore. 

tcp        0      0 127.0.0.1:2208          0.0.0.0:*               LISTEN     4172/hpiod          
tcp        0      0 0.0.0.0:902             0.0.0.0:*               LISTEN     4481/xinetd         
tcp        0      0 0.0.0.0:41705           0.0.0.0:*               LISTEN     4430/rpc.statd      
tcp        0      0 0.0.0.0:111             0.0.0.0:*               LISTEN     3496/portmap        
tcp        0      0 127.0.0.1:631           0.0.0.0:*               LISTEN     4151/cupsd          
tcp        0      0 127.0.0.1:60543         0.0.0.0:*               LISTEN     4178/python         
udp        0      0 0.0.0.0:32770           0.0.0.0:*                          4430/rpc.statd      
udp        0      0 0.0.0.0:790             0.0.0.0:*                          4430/rpc.statd      
udp        0      0 0.0.0.0:68              0.0.0.0:*                          3270/dhclient3      
udp        0      0 0.0.0.0:111             0.0.0.0:*                          3496/portmap        
udp        0      0 85.69.101.76:123        0.0.0.0:*                          4451/ntpd           
udp        0      0 127.0.0.1:123           0.0.0.0:*                          4451/ntpd           
udp        0      0 0.0.0.0:123             0.0.0.0:*                          4451/ntpd           
udp6       0      0 :::123                  :::*                               4451/ntpd         

So, this originally "unknown" port 668 is nothing to worry about in the end, 
it's just NFS file sharing, good ! :o)

Thanks guys for the shedding some light ! :o)

--
Vince