libnet is a collection of Perl modules which provides a simple
and consistent programming interface (API) to the client side
of various protocols used in the internet community.

For details of each protocol please refer to the RFC. RFC's
can be found a various places on the WEB, for a starting
point look at:

    http://www.yahoo.com/Computers_and_Internet/Standards/RFCs/

    The RFC implemented in this distribution are

    Net::FTP        RFC959          File Transfer Protocol
    Net::SMTP       RFC821          Simple Mail Transfer Protocol
    Net::Time       RFC867          Daytime Protocol
    Net::Time       RFC868          Time Protocol
    Net::NNTP       RFC977          Network News Transfer Protocol
    Net::POP3       RFC1939         Post Office Protocol 3

WWW: https://metacpan.org/release/libnet