Debian / Ubuntu Linux apt-get: Blacklist a Package From Installing

Posted on in Categories last updated September 29, 2012

I‘ve build my own lighttpd .deb package and I do not want to upgrade it using the apt-get command. Also, I do not want to upgrade a few more packages such as php5-cgi, httpd and so on. How do I blacklist a package or packages so that when I run apt-get upgrade, it will ignore blacklisted packages and install the rest of updates under Debian or Ubuntu Linux server system?

Gnome Network Manager VPN Tab Disabled ( Greyed out )

Posted on in Categories , last updated September 8, 2016

I‘ve the NetworkManager service is installed and started under Linux desktop. The applet is running. The NetworkManager can display available network hardware and wireless networks. But, I’m unable to add VPN support as the Add tab is greyed out. I need to use both PPTP and Cisco vpn clients. How do I fix this problem under Debian or Ubuntu Linux?

Gnome Volume Control: Disabled Sound Themes

Posted on in Categories last updated May 26, 2011

Problem is that every time I click something I get annoying sound from computer speaker. So I tried to disable or set new sound theme by visiting System > Preferences > Sound. The Sound Theme tab is greyed out. Sound itself is not working and I can only get annoying sound. How do I fix this problem under Debian or Ubuntu Linux gnome desktop system?

Debian / Ubuntu Linux Disable / Remove All NFS Services

Posted on in Categories , last updated May 3, 2017

NFS was not designed with security in mind, and has a number of weaknesses, both in terms of the protocol itself and because any NFS installation must expose several daemons, running on both servers and clients, to network attack. I use my Debian / Ubuntu Linux based server only to server web pages and nothing else. How do I disable NFS services under Debian or Ubuntu Linux?