Synscan

Another aspect of enumeration of hosts is the determining of TCP ports in an OPEN state, that is to say TCP ports which respond to SYN packets with a Syn and the ACK flag set, Syn-Ack. Synscan is impressively fast at determinining this via the use of two processes, one to send the Syn packets... Platforms: *nix

halfscan6 is an IPv6 syn port scanner. Now that people can set up IPv6-over-IPv4 tunnels they dont always treat the outside IPv6 as untrusted. An since more and more OSs enable normal services to listen to IPv6 ports as well as IPv4, the firewall can sometimes be completely bypassed. A normal... Platforms: *nix