Free dns update client software for linux

popdns is a small daemon that aims at simplifying the use of DHCP-configured machines by allowing them to dynamically update their DNS entry using (nearly) any POP3-capable e-mail tool.

After having configured a new e-mail source (with the POP3 protocol), users are authenticated using their system password and popdns automatically updates the specified (or implied) DNS entry with the IP address of the connecting machine.

popdns makes all DNS modifications with plugins. The plugins are external programs (scripts or compiled programs) simply launched with the following arguments:

plugin ipaddress name [ name ... ]

web-nsupdate is a web-based dynamic DNS update utility.

The web-nsupdate package provides a simple, web-based facility for clients to send dynamic DNS updates. Clients are typically DHCP hosts, such as a Linux system acting as a gateway for residential broadband service.

The client sends a simple web request (such as with the wget(1) or lynx(1) commands) to the web-nsupdate service to register their host request.

This package has been tested on a server with the following Debian packages:

* bind9 (ver 9.2.4-1)
* apache2 (ver 2.0.54-5)
* php4 (ver 4.3.10-16)

BE ADVISED: Its a pain in the butt to configure BIND to do dynamic DNS. You are going to need to do that to make "web-nsupdate" work. These instructions describe that process, so follow carefully. I *strongly* urge you to review the dnssec-keygen(8) and nsupdate(8) man pages first, so you can get some idea of what we are trying to accomplish.

Installation Instructions:

1. Copy the "web-nsupdate" files to a location such as
"/usr/local/lib/web-nsupdate". It is OK to install somewhere else,
just adjust the following directions accordingly.

2. Generate a TSIG key that "web-nsupdate" will use to authenticate
itself to the DNS server.

SECURE THIS KEY! Do not leave readable copies around. This key can
be used to make changes to DNS records managed by "web-nsupdate".

Here are the steps to generate the key:

cd /usr/local/lib/web-nsupdate
/usr/sbin/dnssec-keygen -a HMAC-MD5 -b 512 -n HOST web-nsupdate
chmod 440 Kweb-nsupdate*
# Below, adjust "www-data" to the GID your web server runs under.
chgrp www-data Kweb-nsupdate*

3. Setup the "web-nsupdate" definitions file, starting with the provided
sample. This file needs to be secured, to protect the client passwords
from being revealed.

cd /usr/local/lib/web-nsupdate
cp nsupdate-defs.php.sample nsupdate-defs.php
chmod 640 nsupdate-defs.php
# Below, adjust "www-data" to the GID your web server runs under.
chgrp www-data nsupdate-defs.php
vi nsupdate-defs.php

4. Verify that "nsupdate.php" has the correct path to the "nsupdate-defs.php"
file.

vi nsupdate.php
# Check the require_once() statement near the top.

5. Symlink the update script into your web site.

# Below, adjust "/var/www/nsupdate.php" to a location in your web server.
ln -s /usr/local/lib/web-nsupdate/nsupdate.php /var/www/nsupdate.php

At this point, the "web-nsupdate" front-end is configured. Now to
configure the nameserver back-end.

6. Assuming you dont already have a place for nameserver keys, create
a new file called "named.keys" that contains the TSIG key that
"web-nsupdate" will use. The file will look something like:

key web-nsupdate {
algorithm HMAC-MD5;
secret "jzzoMR4ocgZGq5pQho2Pr5r9DDHT4lWK8QO09cpvVtpvHqaUdzktBs1DHCslpPR8PwXU3ni8zjST/5FxEwg44Q==";
};

Replace the "secret" value show above with the key in the
"Kweb-nsupdate.+157+nnnnn.private" file you generated in step 2.

7. Install the "named.keys" file to the directory where your "named.conf"
resides. This file needs to be secured, to protect your namesever
from unauthorized updates.

If your "named.conf" directory is "/etc/bind", do:

# Below, adjust /etc/bind to directory where named.conf lives.
mv named.keys /etc/bind/named.keys
chmod 400 /etc/bind/named.keys
# Below, adjust "bind:bind" to the UID:GID your nameserver runs under.
chown bind:bind /etc/bind/named.keys

8. Add a line to your "named.conf" that says:

include "named.keys";

9. Modify your "named.conf" to list each host that web-nsupdate will
be updating. If, for example, you want to allow dynamic updates
from hosts "host1.example.com" and "host2.example.com", then modify
the "example.com" stanza in "named.conf" and add two lines:

zone "example.com" {
type master;
.
.
.
# add the lines below, one per host in thie zone
update-policy {
grant web-nsupdate. name host1.example.com. A;
grant web-nsupdate. name host2.example.com. A;
};
};

10. Test the update capability. Point your web browser to the installed
"nsupdate.php" script. This should bring up a form for manual
entry. Submit your entry, and verify the update was successful.

Oracle client is a simplistic Perl-based Oracle client that tries to mimic some of the functionality of PostgreSQL and MySQLs text-based SQL clients.

It is relatively simplistic, but much more useful than dbishell or sqlplus.

The project supports readline, history, desc, and various shorthand commands like d, , c, etc.

Free Simulated Radar Client project is a framework for radar clients for virtual air traffic control networks.

Free Simulated Radar Client is a framework for radar clients for virtual air traffic control networks (e.g., VATSIM and IVAO). Currently work is occuring on a radar client (an ASRC clone), a flight strip display, and a 3D tower view.

The framework analyses the data provided by servers of these networks and provides interfaces for radar clients (or other applications) to access this data.

FlashUnity is a channel-based approach to an XML flash communications server and chat room.
Using the concept of channels and filters the FlashUnity server becomes extremely flexible and very easy to extend. Also, by using channels it is possible to run multiple modular functions within the same server.
Filters allow you to prefilter input for all channels or provide other functionality to all channels. This is a total rewrite of CyberSS, and the APIs and XML have multiple major changes. Each module, filter, and the chat client are in their own seperate PEAR package.
Enhancements:
- Room changes now work properly, and there are Uselist updates.
- This is the final release before 1.0.

Piorun Jabber Client is a Jabber client for Gnome with user interface simmilar to IRC clients.

Currenly implemented features include: standard chat, multi-user chat, roster and subscriptions management, VCards, privacy lists, secure connections (TLS and SALSL).
Piorun is written using Mono/Gtk#

DNS Flood Detector was developed to detect abusive usage levels on high traffic nameservers and to enable quick response in halting (among other things) the use of ones nameserver to facilitate spam.
DNS Flood Detector uses libpcap (in non-promiscuous mode) to monitor incoming dns queries to a nameserver. The tool may be run in one of two modes, either daemon mode or "bindsnap" mode. In daemon mode, DNS Flood Detector will alarm via syslog.
In bindsnap mode, the user is able to get near-real-time stats on usage to aid in more detailed troubleshooting.
Usage: ./dns_flood_detector [OPTION]
-i ifname specify interface to listen on (default lets pcap pick)
-t n alarm when more than n queries per second are observed
(default 40)
-a n wait for n seconds before alarming again on same source
(default 90)
-w n calculate statistics every n seconds
(default 10)
-x n use n buckets
(default 50)
-m n mark overall query rate every n seconds
(default disabled)
-A addr filter for specific address
-M mask netmask for filter (in conjunction with -A)
-Q monitor any addresses (default is to filter only for
primary addresses on chosen interface)
-b run in foreground in "bindsnap" mode
-d run in background in "daemon" mode
-D dump dns packets (implies -b)
-v detailed information (use twice for more detail)
-h usage info
Sample Output:
dopacki:~$ sudo ./dns_flood_detector -v -v -b -t10
[15:14:56] source [192.168.1.45] - 0 qps tcp : 24 qps udp [8 qps A] [16 qps PTR]
[15:14:56] source [10.0.24.2] - 0 qps tcp : 15 qps udp [15 qps A]
[15:15:06] source [192.168.1.45] - 0 qps tcp : 24 qps udp [8 qps A] [16 qps PTR]
[15:15:06] source [10.0.24.2] - 0 qps tcp : 15 qps udp [14 qps A]
[15:15:16] source [192.168.1.45] - 0 qps tcp : 23 qps udp [7 qps A] [15 qps PTR]
Enhancements:
- Address filtering options are now available, as are fractional query rates for better precision.
- This update also fixes several crashes and segfaults that affected overall reliability.

GroundZero II MUD Client project is a console MUD client.
GroundZero II MUD Client is a console MUD client that includes automatic mapping, map discovery, shortest path, an item db, and more.
Its a mud client for an extremely kickass mud: web Ground Zero II.
Version restrictions:
- Due to a bug in my code, you need to use regular telnet to create the account on groundzero. This is due to a display bug that doesnt show you prompts.