Net::IRC::Connection defines a class whose instances are individual connections to a single IRC server. Several Net::IRC::Connection objects may be handled simultaneously by one Net::IRC object.
Net::IRC::DCC defines a few subclasses that handle DCC CHAT, GET, and SEND requests for inter-client communication. DCC objects are created by Connection->new_{chat,get,send}() in much the same way that IRC->newconn() creates a new connection object.
Net::IRC::Event defines a standard interface to the salient information for just about any event your client may witness on IRC. It's about as close as we can get in Perl to a struct, with a few extra nifty features thrown in.
Net::Jabber is a convenient tool to use for any perl scripts that would like to utilize the Jabber Instant Messaging protocol. While not a client in and of itself, it provides all of the necessary back-end functions to make a CGI client or command-line perl client feasible and easy to use.
The Nessus program is a Client/Server application offering a framework for lots of security related scanners, so-called plugins. The idea is not to create a separate scanner for any possible security hole, but to reimplement only the most important parts and let the Nessus Server (nessusd) do the most part of the work.
The Nessus client and server are communicating with each other by sending and receiving messages. The message format is described in the files ntp_white_paper.txt (Protocol version 1.0) and ntp_white_paper_11.txt (Protocol version 1.1) of the Nessus distribution. In short messages consist of field lists, the fields being separated by the string ' <|> ' (including the spaces, not including the quotes).
Net::Netblock parses and understand IPv4 CIDR blocks. It's built with an object-oriented interface. Nearly all functions are methods that operate on a Net::Netblock object. There are methods that provide the nearly all bits of information about a network block that you might want.
The Net::NISplusTied allows you to treat NIS+ tables as if they were perl hashes, using tie() semantics. It has cultural links to Rick Harris (Rik.Harris@fulcrum.com.au) NISperl module, although the design goals were different. All you can do with Net::NISplusTied is to manipulate NIS+ tables. If you need faithful NIS+ API implementation, consider using NISperl instead.
"A system-independent interface for user-level packet capture. libpcap provides a portable framework for low-level network monitoring. Applications include network statistics collection, security monitoring, network debugging, etc.
