some links

http://www.showmyip.com/
http://sainathgupta-hacking.blogspot.com/
http://www.securitytaskforce.org/
http://www.blackhat.com/
http://www.blackhat.com/html/bh-usa-06/bh-usa-06-speakers.html
http://www.nag.co.in/ncise.htm
http://www.wtcs.org/snmp4tpc/freeware.htm
http://www.wireshark.org/
http://www.grc.com/default.htm
http://www.thinkdigit.com/index.php?action=pro_how_to&prodid=679
http://www.snort.org/
http://prasadswork.blogspot.com/
http://crack0hack.wetpaint.com/?t=anon
http://www.discoverhacking.c-o.in/
http://crack0hack.wetpaint.com/page/Best+Hacking+Softwares_+1000sw%28Free+download%29
http://www.remote-exploit.org/backtrack_download.html
http://crack0hack.wetpaint.com/rss2_0/pageReport/created?t=anon