thomasfr

[Unit]
Description=Keeps a tunnel to 'remote.example.com' open
After=network.target

[Service]
User=autossh
# -p [PORT]
# -l [user]
# -M 0 --> no monitoring
# -N Just open the connection and do nothing (not interactive)

karanth

The IMAP protocol workflow consists of the following steps,

• A network connection established between the client and the server.
• A greeting message sent by the server indicating that the client has successfully connected.
• A series of interactions between the client and server.

The interactions consists of strings of lines, i.e. string terminated by a carriage return and a line feed (CRLF or \r\n). Interactions can be both commands (sent by clients) and data (sent by clients and servers). Both the client and the server strictly interact using lines or known length octet streams (8-bit characters) followed by a line.

####Client

An IMAP client issues commands to the server in a CRLF terminated string. The syntax of a command includes a tag, followed by the command and parameters. A tag is an alphanumeric identifier and each client command has a different tag for that session. A tag could be something like but not limited to A1, A2 etc.

magnetikonline

Using Dnsmasq with Ubuntu for VM web application testing

When running virtual machines under a Linux host system for testing web apps in various browsers (e.g. Internet Explorer), I found it rather tedious having to continually tweak the hosts file within each VM for the purpose of adding entries pointing back to the host machine's development web server address.

Instead the steps below will setup Dnsmasq on a Ubuntu 16.04LTS, 14.04LTS or 12.04LTS host machine for the purpose of serving both it's own DNS queries and that of virtual machine guests. Dnsmasq will parse the /etc/hosts file on your host machine where we will keep a single set of DNS entires to our test web application(s).

• Method 1
  • Ubuntu 16.04LTS / 14.04LTS
  • Ubuntu 12.04LTS
• Method 2
  • Stop NetworkManager running it's own Dnsmasq

drio

NOTE: I am using bash for this.

NOTE2: Another approach for getting tmux would be to use gentoo-prefix or netbsd's pkgsrc. I 
didn't have too much luck with gentoo-prefix. NetBSD was pretty straight forward but it had
an old version of tmux (1.1).

Here is how to get tmux compiled if you can get your systadmins to installed it ... or
any other weird reason. I assume you have some basic libraries and headers installed (like
ncurses, etc...). If not, you'll have to compile those ones too.