Securing against DDoS
3160
I am under DDoS. What can I do?
78406
Blocking web sites with Windows Firewall
133269
Symmetric encryption construction (meet-in-the-middle attack)
103107
Distributed authentication system (different domains, separatate databases)
16723
Retrieve malicious IP addresses from Apache logs and block them with iptables
130313
Outbound Email Loadbalance with Multiple IPs
101598
A Web ssh/telnet client
73527
Dealing with multiple private DNS servers
68580
Understanding the Basic Context of Trusted Hosts
19363
Why should I firewall servers?
2244
Using reverse proxy prevent login flooding
127718
Methods to ban bots, force attacks on my server
808
How do I deal with a compromised server?
30409
Prevent malicious bots from posting spam
104071
Defend against flag spam in chat
144580
What is a man-in-the-middle attack (for instance in Diffie-Hellman)?
7910
Securing SSH on Linux Ubuntu