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Topic short cuts
This section is a list of shortcuts to the topics which appear below. But you should start with Things everyone should read.
PHP Security

  My first CGI script (uptime.pl) 22 Jul 1999
Apache port - php3/FrontPage/SSL 2 Jan 2000
Apache - with DSOs for PHP, FrontPage, and SSL under FreeBSD 4.0-S 6 May 2000
Cacti remote injection exploit 12 Jan 2007

  improving security * 11 Aug 1998
su - how to become a super user.  avoid using root 18 Oct 1998
changing the pre-login text - also known as /etc/issue 6 Jan 1999
tcp wrapper - monitoring telnet requests, permit deny connections, etc. 9 Jan 1999
upgrading sendmail 11 Jan 1999
Staying current with FreeBSD - using CVSup to upgrade FreeBSD 14 Jan 1999
Before the disaster 14 Jan 1999
I was probed!  The security worked. 2 Feb 1999
Upgrading to sendmail 8.9.3 18 Feb 1999
nologin - Refuse a login to a user, and make a note of it in syslog 9 Mar 1999
telnet fails - tcp_wrapper is out of date 18 Mar 1999
ssh - much more secure than telnet 25 Apr 1999
Private DNS 8 Jul 1999
toor - and why you should keep it 23 Jul 1999
ssh2 - when ssh won't do 13 Aug 1999
Changing the pre-login text - also known as /etc/issue - more info 22 Aug 1999
Upgrade your DNS server - bind8 security issues 20 Nov 1999
watch - making it work 29 Nov 1999
Installing OpenSSH - less restrictive than ssh 5 Dec 1999
logcheck - who is checking your logs? 19 Dec 1999
identd problems - patch 19 Dec 1999
unwanted email from tcpd 26 Dec 1999
PortSentry - a port watcher 1 Jan 2000
Front Page Extensions - security considerations 7 Jan 2000
Blocking apache access by host 27 Jan 2000
Big Brother is watching you (and your network) 18 Feb 2000
finger and how to supply something different 24 Feb 2000
How to copy files around without anyone seeing them 27 Mar 2000
What version of bind are you running? 3 Apr 2000
ssh - authorized keys and chmod 5 Apr 2000
Keeping mysql passwords secure 19 Apr 2000
passphrases are your friend 6 Jul 2000
VLAN with pipsecd 7 Jul 2000
turning sendmail VRFY off 8 Aug 2000
mindterm - ssh connections via web browsers 14 Nov 2000
IPsec 27 Dec 2000
Setting up an encrypted file system (by Niklas Saers) 6 Jan 2001
installing bind8 from ports 28 Mar 2001
qpopper with APOP 30 Mar 2001
Using smtp from remote locations 7 Apr 2001
Setting up a FreeBSD IPSec Tunnel (by John J. Rushford Jr) 7 Jun 2001
San Jose bound... 11 Jun 2001
Client Authentication with SSL 12 Jul 2001
ssh exploit - how to avoid it 14 Nov 2001
stunnel - another way to avoid plain text passwords (by Mike Miller) 16 Nov 2001
Anonymous FTP server (by Kim Scarborough) 30 Nov 2001
PostgreSQL 7.2 upgrade and crypto 23 Feb 2002
stunnel - encryption and security 10 Mar 2002
Creating a VPN using PPTP 26 Apr 2002
scp tricks 7 Mar 2003
Using a jail as a virtual machine 1 Sep 2004
Secure Your Wireless with IPsec 6 Dec 2004
Configuring IPsec on your XP Professional laptop 22 Dec 2005
Putting sshd on a higher port 4 Dec 2006
Cacti remote injection exploit 12 Jan 2007
Bacula - Transport Layer Security (TLS) 23 Jan 2007
Fighting spam with pf 9 Jul 2007
Virus scanning 9 Jul 2007
Creating your own Certificate Authority 27 Nov 2008
Obscuring smtp auth headers 2 Dec 2008
Removing Firefox 2 19 Oct 2009
logcheck - a log file scanner 29 Nov 2009
cssh - cluster ssh 26 Jan 2010