Free fntsample 2.6 software for linux

spamdyke is a drop-in filter for qmail to provide connection-time blacklisting, graylisting, DNS RBL checking, improved logging, and more spamdyke project is a standalone program that does not use qmail source code or require patching/recompiling qmail.
For anyone who runs a mail server, spam is a problem. Its a huge problem and its only getting bigger. Unfortunately, qmail doesnt have many facilities for dealing with spam. qmail also doesnt do good logging. The qmail logs are probably useful to qmail developers but not to system administrators. Consider:
- Qmail doesnt log with a human-readable time format.
- Qmail logs dont track usable information (like senders and recipients).
- Qmail doesnt log to a single log file, making it very difficult to track an email from connection to delivery.
- Qmail logs roll over after a set size is reached (could be a few hours, could be a few minutes).
All of these things makes qmail very difficult to troubleshoot or monitor. spamdyke solves this. It monitors incoming traffic, acting as a middleman between qmail and the remote server. It catches the sender and recipient addresses as they go by and logs them to syslog. If it sees something it doesnt like (e.g. a blacklisted sender), it cuts the connection, closes qmail and fakes the rest of the SMTP transaction with the remote server. qmail thinks the remote server disconnected normally. The remote server thinks qmail is rejecting the message. Its the best of both worlds.
Some history: DJBs ucspi-tools package includes a handy little program called rblsmtpd for checking incoming SMTP connections against a DNSRBL. Initially, this seemed like a great thing (and it was) but it didnt go far enough. Lots of spam still came through. So after extending rblsmtpd to do more and more and more things, a limit was finally reached where it wouldnt go any further. Thus, spamdyke was born.
Main features:
- Reject the connection if the remote server has no reverse DNS entry.
- Reject the connection if the remote servers reverse DNS entry does not resolve.
- Reject the connection if the remote servers reverse DNS entry contains its IP address and a prohibited keyword (like "dynamic").
- Reject the connection if the remote servers reverse DNS entry contains its IP address and ends in a country code (whats the japanese word for "dynamic"?).
- Reject the connection if the remote servers IP address is listed in an IP blacklist.
- Reject the connection if the remote servers reverse DNS entry is listed in a domain name blacklist.
- Reject the connection if the remote servers IP address is listed in a given DNS realtime blacklist.
- Reject the connection if the remote server sends data before the SMTP greeting banner is displayed (earlytalkers).
- Reject the connection if the senders address is listed in a sender blacklist file.
- Limit recipients to a maximum number per connection. (Yes, this goes against RFC 821 but legitimate mail servers retry the rejected recipients, spammers dont.)
- Graylist incoming mail to specific domains (some domains can enjoy graylisting while others do not).
- Close the connection after a set idle time.
- Close the connection after a set maximum time.
Those filters end up rejecting more than 99.9% of the incoming connections to my mail server. As a result, I receive (on average) less than one spam message PER WEEK! (Down from a high of 70+ per day.) Regular correspondance with real people has not suffered.
Graylisting deserves special mention. As of 2007, its not widely used (and therefore still effective against spammers). Heres how it works:
An incoming connection is received and the sender and recipient are identified.
A log is consulted to see if the sender has sent email to the recipient before. If so, the message is accepted. If not, the message is rejected with a temporary rejection code and a log entry is made.
When the remote mail server retries the message (usually only a few minutes later), the previously-logged connection is noted and the message is accepted.
Simple, right? After the system is activated, regular correspondents first email is delayed a few minutes. After that, there are no delays. But the spam stops because most spammers dont retry their deliveries! Even when they do, they usually change their sender address to a new (fake) one, which gets graylisted.
Graylisting is amazing and makes a tremendous difference (for now). spamdyke will also:
- Bypass all filters if the remote servers IP address is listed in an IP whitelist file.
- Bypass all filters if the remote servers reverse DNS entry is listed in a domain name whitelist file.
- Log meaningful messages to the syslog (very unlike qmails logs).
- Log all SMTP traffic to aid diagnosing problems.
Enhancements:
- This release fixes a serious bug that was causing lost mail when the remote server sent the message and disconnected in a burst without waiting for a response.
- Code has been added to translate bare line feeds into carriage return+line feeds.
- Support has been added for MUAs that send their username with their AUTH LOGIN command.

DenyHosts is a script intended to be run by Linux system administrators to help thwart ssh server attacks.
If youve ever looked at your ssh log (/var/log/secure on Redhat, /var/log/auth.log on Mandrake, etc...) you may be alarmed to see how many hackers attempted to gain access to your server. Hopefully, none of them were successful (but then again, how would you know?). Wouldnt it be better to automatically prevent that attacker from continuing to gain entry into your system?
DenyHosts attempts to address the above... and more.
Main features:
- Parses /var/log/secure to find all login attempts and filters failed and successful attempts.
- Can be run from the command line, cron or as a daemon (new in 0.9)
- Records all failed login attempts for the user and offending host
- For each host that exceeds a threshold count, records the evil host
- Keeps track of each non-existent user (eg. sdadasd) when a login attempt failed.
- Keeps track of each existing user (eg. root) when a login attempt failed.
- Keeps track of each offending host (with 0.8+ these hosts can be purged if the associated entry in /etc/hosts.deny is expired)
- Keeps track of suspicious logins (that is, logins that were successful for a host that had many login failures)
- Keeps track of the file offset, so that you can reparse the same file (/var/log/secure) continuously (until it is rotated).
- When the log file is rotated, the script will detect it and parse from the beginning.
- Appends /etc/hosts.deny and adds the newly banned hosts
- Optionally sends an email of newly banned hosts and suspicious logins.
- Keeps a history of all user, host, user/host combo and suspicious logins encountered which includes the data and number of corresponding failed login attempts.
- Maintains failed valid and invalid user login attempts in separate files, such that it is easy to see which valid user is under attack (which would give you the opportunity to remove the account, change the password or change its default shell to something like /sbin/nologin
- Upon each run, the script will load the previously saved data and re-use it to append new failures.
- Resolves IP addresses to hostnames, if available (new in v0.6.0).
- /etc/hosts.deny entries can be expired (purge) at a user specified time (new in 0.8)
- FreeBSD support (added in 0.7)

WU-FTPD package contains the WU-FTPD FTP (File Transfer Protocol) server daemon. The FTP protocol is a method of transferring files between machines on a network and/or over the Internet.
Main features:
- logging of transfers
- logging of commands
- on the fly compression and archiving
- classification of users type and location
- per class limits
- per directory upload permissions
- restricted guest accounts
- system wide and per directory messages
- directory aliases
- cdpath
- filename filters
- virtual host support

Linice is a source-level kernel debugger for x86 systems with the look and feel of SoftIce for MS Windows.
It is designed for people who are already familiar with SoftIce, but anyone can quickly get used to it. It can break into a running kernel at any time using a hotkey and supports breakpoints and single step on modules, the kernel, or user programs.
Linice supports the VGA frame buffer, the X Window System, serial connections, and monochrome adapters.
Enhancements:
- A bug in linsym where getlogin() would return NULL for some kernels has been fixed.
- This fixes a linsym segfault reported by a number of users.

Gjiten project is a Japanese dictionary program for GNOME.

Gjiten also has a kanji dictionary. Any combination of stroke count, radicals and search key can be used for kanji lookups.

scanlogd is a TCP port scan detection tool, originally designed to illustrate various attacks an IDS developer has to deal with, for a Phrack Magazine article (see below). Thus, unlike some of the other port scan detection tools out there, scanlogd is designed to be totally safe to use.

This release of scanlogd can be built with support for one of several packet capture interfaces. In addition to the raw socket interface on Linux (which does not require any libraries), scanlogd is now aware of libnids and libpcap.

The use of libpcap alone is not a good idea. If youre on a system other than Linux and/or want to monitor the traffic of an entire network at once, you should be using libnids in order to handle fragmented IP packets.

QwtPlot3D is a Qt/OpenGL-based C++ programming library, providing essentially a bunch of 3D-widgets for programmers.
Main features:
- Common code base for Qt3 and Qt4
- Specialized widgets for surfaces, graphs etc.
- Parametric Surfaces
- Lighting (experimental)
- User defined visual objects
- Scaling, rotating, shifting, zooming of data sets and mathematical functions ( see Data Input Topics )
- Interactive mouse and keyboard handling
- Resolution changing on the fly
- Reading from MESH data files :See the data directory and NativeReader documentation for this . You will find example datasets here
- Reading from FEM files
- Flat (2D) labeling
- Wireframe, filled polygons, hidden line
- Floor projections (Isolines, Data)
- Free configurable (labeling, numbering; linear, log or user-defined transformations) and autoscalable axes
- Free color model
- Flat/Gouraud shading
- Color legends
- Pixmap output (all Qt supported formats)
- Vector output (PostScript, EPS and PDF) via gl2ps