What is TCP Wrapper? - Definition from WhatIs.com
Part of the Network administration glossary:

TCP Wrapper is a public domain computer program that provides firewall services for UNIX servers. The program was developed by Wietse Venema.

When an unprotected UNIX computer is connected to a network, the computer's system is exposed to other computer users connected to the network. For example, by using the finger utility, a hacker may be able to determine which users are logged on to a given server. It is also possible to find out the identities of individual computers, and various details about their users' recent Internet behavior. A hacker can determine when a workstation is likely to be idle, and then access and use that workstation when it is unattended. TCP Wrapper can act as a firewall to prevent this.

TCP Wrapper monitors incoming packets. If an external computer or host attempts to connect, TCP Wrapper checks to see if that external entity is authorized to connect. If it is authorized, then access is permitted; if not, access is denied. The program can be tailored to suit individual user or network needs.

This was last updated in September 2005
Contributor(s): Bob Hundley
Posted by: Margaret Rouse

Related Terms

Definitions

  • moves, adds and changes (MAC)

    - Moves, adds and changes (MAC) keep computing equipment in line with user needs and up-to-date, with disciplined process management. (SearchDataCenter.com)

  • distributed

    - Computing is said to be "distributed" when the computer programming and data that computers work on are spread out over more than one computer, usually over a network.Cloud computing is a particula... (WhatIs.com)

  • Platform as a Service (PaaS)

    - Platform as a service is a cloud model in which providers deliver apps over the Internet and host users' hardware and software on their infrastructure. (searchCloudComputing.com)

Glossaries

  • Network administration

    - Terms related to managing computer networks, including definitions about LANS or WANS and words and phrases about network design, troubleshooting, security and backups.

  • Internet applications

    - This WhatIs.com glossary contains terms related to Internet applications, including definitions about Software as a Service (SaaS) delivery models and words and phrases about web sites, e-commerce ...

Ask a Question. Find an Answer.Powered by ITKnowledgeExchange.com

Ask An IT Question

Get answers from your peers on your most technical challenges

Ask Question

Tech TalkComment

Share
Comments

    Results

    Contribute to the conversation

    All fields are required. Comments will appear at the bottom of the article.