Linux is not public domain, nor is it Shareware'. It is Free' software, commonly called freeware, and you may give copies away, but you must also give the source with it or make it available in the same way. If you redistribute any modifications, you are legally bound to distribute the source for those modifications. See the GNU Public License for details. A copy is included with the Linux source, or you can get a copy via ftp from prep.ai.mit.edu in /pub/gnu/COPYING.
Slackware:
ftp.cdrom.com:/pub/linux/slackware
MCC:
sunsite.unc.edu/pub/Linux/distributions/MCC/1.0+
SLS:
tsx.mit.edu/pub/linux/packages/SLS
TAMU:
sunsite.unc.edu/pub/Linux/distributions/TAMU
Debian
tsx.mit.edu/pub/linux/distributions/debian
Kernel Changes
Summary of kernel changes since 1.1.14.
* /pub/Linux/system/Network
directory at Sunsite.
The Networking
News Page New information about Networking.
Arpwatch An ethernet monitor program that keeps tracks of ethernet/IP address pairings.
Kernels v1.3
Kernels v1.2
At Sunsite.
Kernels v1.1
At Sunsite.
Network Related
Linux Ethernet HOWTO
Describing setting up an Ethernet.
Linux Electronic Mail HOWTO Help
with EMAIL under Linux.
Linux News HOWTO On setting up
Usenet servers & clients.
Linux PPP HOWTO Help with PPP under
Linux.
Linux Term HOWTO HOWTO on Term, a
program to fake TCP/IP w/ a shell account.
Linux Multiple Ethernet
mini-HOWTO Setting up multiple ethernet boards.
Linux Anon FTP Setup mini-HOWTO
Setting up an anonymous FTP site.
Linux
Multicast FAQ for use with MBONE.
TCP/IP and
Ethernet drivers Information on Ethernet and TCP/IP under Linux.
DIG
2.0 Gather information about site via DNS.
TalkD
with antiflash and hatemail.
NcFTP
2.01 A very much improved FTP client. Highly recommended!
pMirror
A mirror program written in Perl.
Mosaic
Web browser The original Webbrowser.
Netscape
Web browser The new leader in Browsing!
Lynx Web
browser A text-mode Webbrowser.
Midas
Web browser Yet another Webbrowser
Chimera Web browser And another.
Arena Web
browser And another but w/ HTML 3.0 support.
CERN
HTTP Daemon Web server from CERN.
NCSA HTTP
Daemon Web server from NCSA.
Apache HTTP Server A
drop in replacement for NCSA's server. Many new features.
WU
Ftpd 2.4 Upgraded FTP daemon.
Elm - Electronic Mail
for UNIX.
IVS
- Inria Videoconferencing System for MBONE.
NV
- Network Video for MBONE.
Videoconferencing
over MBONE for Linux.
XWebcomber a
search utility for the World-Wide Web.
IRC
- Internet Relay Chat FAQ.
Gopher2.016
source for gopher daemon and client.
Administration and Security Related
SysAdmin
The Ever Evolving Profession.
PGP
The Privacy Wars.
Linux Firewall HOWTO Setting
up firewalls under Linux.
Linux Term Firewall mini-HOWTO Using
a firewall with TERM.
Bugtraq
Archives of Bugtraq: Unix security mailling list.
CERT
Advisories From the Computer Emergency Response Team.
Security Info
Generic security info from CERT.
SATAN
Vulnerability tutorials Descriptions of the vulnerabilities SATAN
looks for.
alt.security
FAQ FAQ from the Usenet newsgroup.
Unix Security
Info by the Advanced Laboratory Workstation Systems.
Some General Securty Pages
Alex
Security Links
bsy's
Security Related Net-pointers
CERT
Coordination Center
CIAC Security Web Site
COAST Security Archive
(ftp)
Computer
Security
Cypherpunks
FIRST
Security Papers
Miscellaneous
Security Papers (ftp)
Network/Computer
Security Technology
NIST Computer Security
Resource Cleainghouse
SAIC Security
Library
Security
from Einet Galaxy
Security
Reference Index
Security-Related
Files
Spaf's
Hotlist--Computer Security
The Uebercracker's Security
Web
Yahoo's
Security and Encryption
Security/Administration Programs (UNIX)
* /pub/Linux/Admin directory at
Sunsite.
COPS COPS (Computer
Oracle and Password System) is a security program that tries to
identify security risks on a Unix system.
Courtney Tries
to identify the use of SATAN on a subnet.
Crack Crack is a password cracker.
Crack lib Checks plaintext words against through generated by Crack.
Deslogin Provides a
more secure method for remote login than telnet or rlogin in untrusted
networks.
Dig Dig is a network utility which queries Domain Name Servers similar to nslookup but it's more reflexible.
Drawbridge Powerful bridging filter package.
Fping An efficient way to test whether a large number of hosts are up.
Iss Checks hosts within a specified range of IP address for various security vulnerabilities in sendmail, anonymous FTP setup, NFS and many more.
IPACL Filters incoming and outgoing TCP and UDP in a SVR4/386 kernel.
Kerberos Kerberos is an authentication system used to protect unsecurity networks. (Export restricted)
Logdaemon Replacement
for system ftp, rlogin, rexec,
rsh daemons and login program that have added
security features such as login in failures and S/Key one-time
password support.
MD5 MD5 is a hash function using to the authenticity of a file.
Netlog Network logging and monitoring of all TCP and UDP connections on a subnet. Netlog also includes tools to analyzing the output.
Npasswd It is a replacement for the system passwd command that does not accept poor passwords.
Passwd+ Passwd+ is a proactive password checker which replaces the system passwd command. It enforces the selection of good passwords.
PGP Pretty Good Privacy (PGP) protects documents such as email from unauthorized reading using public key encryption. (Some versions are export restricted)
Pidentd Identd tries to identify the remote user name of a TCP/IP connection. Identd is an implementation of RFC 1413.
Portmapper It is a modified version of portmapper that reduces the vulnerabilities and disallows proxy access.
RIPEM Riordan's Internet Privacy Enhanced Mail (RIPEM) improves the security of email by verifying the authenticity of the message sender among other things. ( Export restricted)
Rpcbind A modified version of rpcbind (System V.4 portmapper) that prevents intruders from bypassing NFS export restrictions.
SATAN. SATAN is a
program that gathers network information such the type of machines and
services available on these machine as well as potential security flaws.
Securscan Securscan checks SGIs for many security vulnerabilities.
Sendmail The latest version of Sendmail. Beware of prior versions, they have exploitable bugs.
Sendmail Wrapper The sendmail wrapper provides limited protection against local sendmail attacks.
Shadow This package including everything that is necessary to use shadow password file.
Smrsh S/Key generated one time passwords to gain authenticated access to computer hosts.
Socks Socks is a package which allows various Internet service such as gopher, ftp and telnet to be used through a Firewall.
Strobe Strobe displays
all active listening TCP port on remote hosts. It uses an algorithm
which
efficiently uses network bandwidth.
Swatch Swatch is a package used to monitor and filter log files and executes a specified action depending of pattern in the log.
TCP Wrapper Allows a Unix System Administrator to control access to various network services through the use of access control list. It also provide logging information of wrapped network services which may be used to prevent or monitor of network attacks.
Tcpr Tcpr is a set of perl scripts that forwards ftp and telnet commands across a firewall.
Tiger Checks for known security vulnerabilities of Unix workstations. It is similar to Cops with many extensions.
TIS Firewall Toolkit Firewall Toolkit is a software package to build and maintain a system which is used to protect a network from unwanted network activities.
Traceroute Firewall Toolkit is a software package to build and maintain a system which is used to protect a network from unwanted network activities.
Tripwire Monitor for changes in system binaries.
Wu-ftpd A replacement ftp server for UNIX systems that many features including extensive logging and a way of limiting number of ftp users.
Xinetd It's a replacement for inetd which has extensive logging and access control capabilities for both TCP and UDP services.
Xp-BETA It is an application gateway for X11 protocol that uses Socks and/or CERN WWW Proxy.