Free ping tunneling software for linux

TunnelVision creates an encrypted VirtualPrivateNetwork, or VPN, between two Tunnel Vision-capable sites on the Internet.
TunnelVision creates an encrypted VirtualPrivateNetwork?, or VPN, between two Tunnel Vision-capable sites on the Internet. Realistically, that means sites with a Linux server running TunnelVision or with a WorldvisionsWeaver? or NetIntegrator acting as their Internet gateway.
TunnelVision requires a Linux 2.2.x kernel or later for running properly. Were sorry about that, but we wanted to use the new features.
Enhancements:
- Also known as 0.70pre2.
- Lots of underlying library changes as WvStreams v2 was debugged.
- A new way of handling strings and lists makes things prettier.
- Several bug fixes resulting from the use of our new stresstest program.
- Connections regenerate themselves after the 10-minute idle timeout.
- All known bugs have been eliminated.

JSecureTunneling provides a Java SSH client for tunnels management.

SecureTunneling is a Java SSH client that is entirely oriented toward the management of SSH tunnels, offering the ability to establish secure and permanent tunnels to a remote SSH server transparently, just like a simple network connection.

The key features are: auto-reconnection, connection monitoring, connection triggers, tunneling changes on-the-fly, and profile management.

Gnome SSH Tunnel Manager (gSTM) provides a convenient front-end for the cumbersome ssh commandline.

Tunnel configurations are stored in a simple XML format with support for both local and remote port redirection.

Tunnels can be individually started and stopped from the simple main dialog with the option to add or delete a tunnel or modify its preferences.

An SSH tunnel with port redirection is usefull to access services behind a *nix firewall/router. For example, if you have a Terminal Server (remote desktop) and a MySQL server on your private LAN and want to access them securely from outside, you just open an ssh connection with two port redirections. You can then connect to your localhost which will be redirected over the encrypted tunnel, through the firewall/router, to the remote host.

PingBlog is a tag generator and ping tool for blog directories such as Blogalaxia, VeneBlogs, Technorati, To2Blogs and others.

PingNode will ping a list of network devices at a specified interval. PingNode will then create a record in a MySQL database for each ping indicating that the node was there or not there.

It will also send an email if the node is found to be down. The index.php page contains a list of monitored hosts with current status.

A detail page contains historical data for a given host.

ToDo:

Seperate table for hosts
Query data by date range
Dynamic host add/delete/modify
Custom Reports
disk space monitor
Process/Service monitor

pingx is utility that uses the XNoOp(3x) call to see how fast your connection to your X server. Wonder whether your X performance is slower in a SSH tunnel? pingx can give you hard numbers so you can find out. It has an option to print out some details about the X server as well. Its also useful to see if a X server is up so you can fire up x2x or similar applications intelligently.
pingx is really nice for seeing if a remote display is up (use the options "-q -c 1"). It even returns immediately instead of waiting a second like the ICMP ping utility does, in case youre the impatient type.
Why would you need to know if a remote display is up? Well, I need to know because I have three monitors and two of them are on a dual-head machine. Im not sure whether the dual-head machine is running xinerama http://sourceforge.net/projects/xinerama/) or not this week, so Im unsure whether my center monitor is :0.1 or :0.0. This is important because I use x2vnc to control a third monitor over to the left, and if I give a bad DISPLAY variable to x2vnc it doesnt work.
Clueful people will probably point out that I should make :0.0 my left monitor and put a "Screen 1 RightOf Screen0" statement in my XF86Config-4, but I thought that writing an X protocol-level ping utility might be a fun thing to do instead.
It compiles under FreeBSD 4.3-RELEASE and Linux ok. I got lazy and make different LDLIBS lines in the Makefile. Ill use autoconf/automake in the future, but just edit the Makefile for now.
Enhancements:
- initial release. Has count, verbose, and quiet flags. Needs to have statistics and a signal handler written. Needs to be autoconfed and automaked.

Pingmaster theme periodically pings selected computer. It is done each 15 minutes (.theme file, line 2, interval in milisecs). Here, as you can see, my theme benefits from program "ping" (.theme file, last line).

So you can specifity computer you want to ping by any way which ping understands. Theme also benefits from programs "grep", "awk", and "date". Last one i have mentioned is used on line 12 in .theme file. There, you can change format of time displayed.

Themes look is made to fit "Ricardos kiramba debian" theme, which you can get at http://www.kde-look.org/content/show.php?content=30686.

Remember you must have programs mentioned above.