SASL (Simple Authentication and Secure Layer) is a component that adds a simple authentication to a connection-oriented protocol.
iptables is not a firewall, but a tool to configure the Netfilter firewall.
10 years after DDOS Deflate, No More DDOS is the new DDOS protection system for the major GNU/Linux operating systems !
Ssh (Secure Shell) is a program for logging into a remote machine and for executing commands on a remote machine. It provides secure encrypted communications between two untrusted hosts over an insecure network.
OpenSSL can : create certificates, secure the connection to a server over SSL (either : the web "https", access to mail via POP3S or IMAPS, ...).
5 software displayed.