I realized that nmap can be used to get info about web server. Informations about servers are easy to read via header. Admins tend to mask actual product or version the web is running on. So, then nmap comes to play with. [root@kremilek ~]# nmap -sV -P0 -p80 www.idnes.cz Starting Nmap 4.20 ( http://insecure.org ) [...]
During one of my squirrelmail upgrades I have discovered strange behavior. Users were able to login, but only blank page had appeared. I have found this in log: [Mon Feb 09 18:29:10 2009] [error] [client 89.103.46.115] PHP Fatal error: Call to undefined function load_config() in /usr/share/squirrelmail/plugins/change_sqlpass/functions.php on line 326, referer: http://blabla.blabla.tld/src/login.php change_sqlpass pluging needs compatibility [...]