Free ping tunnel software for linux

tcptunnel is a simple TCP tunnel written in Perl.

Also is a versatile tcp tunnel. The tcptunnel uses:
- tunnelling through a firewall or proxy
- redirecting tcp connections to other ports or machines
- debugging tcp connections in-place
- packet sniffing

The tcptunnel listens on local port < port > and when a connection is made it connects the other end of the tunnel as follows:
a) With no proxy specified, it connects the other end
to < srvport > on < srv >.
b) With a proxy, it connects to < srvport > on < proxy >.
It then directs the proxy to telnet to < srv >, and then it connects the ends of the tunnel.

utunnel is a tool that lets you tunnel all IP traffic (TCP, ICMP, etc.) over UDP. It also allows for the endpoints of these packets to be spoofed as other machines on your unswitched LAN (think wireless or hubs). This tool is simply a proof of concept and the actual uses are left to your choice.


In order to use udptunnel, libnet and libpcap are required. I havent tested with any versions other than:

libpcap >= 0.8.1
libnet >= 1.1.2.1

Install instructions can be found in the INSTALL file, but the eager can
get away with issuing the following commands:

./configure
make
make install

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.

Cubehub is a simple UDP over TCP tunnel application written in Java. It is designed to help people behind a firewall to connect through a TCP connection and play Quake and other UDP-based games.
SOCKS 4 and 5 are protocols that are supposed to allow users to send data through a firewall. However, they only work like this if the SOCKS server is on the firewall itself. Whilst TCP/IP traffic is frequently permitted through firewalls, UDP/IP (required by most online games) is often blocked. When a SOCKS 5 server relays UDP data (SOCKS 4 does not support UDP), the packets are simply relayed, there is no tunnelling involved.
This application provides a solution, tunnelling the data being relayed by a SOCKS server over one or (for better gaming performance) multiple TCP connections to help applications and games to work from behind a restrictive firewall.
Main features:
- Socks 4/5 server
- TCP and UDP tunnelling over single or multiple TCP connections
- Resilience against individual connection dropping

Autotunnel is a small Project for setting up ipip-tunnel automatically. This can give you the possibility to have a static ip address although you get a dynamic address by your dial-in provider. You need Linux-2.2.x or 2.4.x kernel on the server and the client to run it. (with ipip support of course)


A client have to connect to an autotunnel daemon, which is setting up the ipip tunnel after the client has authentificated. Authentification is done via PAM, SSL encrypted. So you need libpam and libssl libcrypt

Change into the diectory where you unpacked the tar-ball. Have a look at the Makefile and type make and make install . If you need a new certificate - key pair type make key
The certificate and key is installed /var/autotunnel.

qPingTool provides a simple tool to enable pinging of external feed agregators.

Plone Ping Tool (qPingTool) is a simple tool to enable pinging of external feed agregators. Currently qPingTool is used with Plone Blog.

Plone Ping Tool (qPingTool) is a simple tool to enable pinging of external feed agregators. This product has no analogues in Plone. You no longer have the need to go to external feed aggregators like Technorati and inform them that your site has new content. Plone PingTool will do it instead of you thus saving your time.