Category Archives: linux

adding users to groups

It’s embarrassing.  I just have a mental block when it comes to adding an existing user to an existing group.

sudo adduser user group

or to remove a user from a group

sudo deluser user group

Meh!

ipsec on a small LAN

Most tutorials cover implementing IPsec as a VPN solution between two sites, but what if you want to secure communications on one site representing a not atypical home LAN with a couple of machines: some wireless, some Linux, some Android, some Windows, and a dual ipv6/ipv4 stack (courtesy of Hurricane Electric’s free TunnelBroker service)?  And to make life more difficult, there are some devices that don’t support IPsec at all.  Obviously, you need at least two IPsec capable machines for this to make much sense.

Does it work, and how well?

Continue reading