TCP Wrapper：修订间差异

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 {{Infobox software
 |name = TCP Wrapper
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 原始代码是1990年左右由[[荷兰人]]Wietse Venema编写的，目的是监视[[埃因霍温理工大学]]数学和计算机科学系的[[Unix]][[工作站]]上的黑客行动。<ref>[ftp://ftp.porcupine.org/pub/security/tcp_wrapper.pdf  ''TCP WRAPPER - Network monitoring, access control, and booby traps.'' by Wietse Venema]</ref>Wietse Venema一直维护这个程序到1995年；2001年6月1日，在其自己的[[BSD许可证|BSD风格的许可证]]下发布。
-The [[tar (file format)|tar]]ball includes a [[Library (computer science)|library]] named '''[[libwrap]]''' that implements the actual functionality. Initially, only services that were spawned for each connection from a [[super-server]] (such as [[inetd]]) got ''wrapped'', utilizing the '''tcpd''' program. However most common network service [[Daemon (computer software)|daemons]] today can be [[Linker (computing)|linked]] against libwrap directly.  This is used by daemons that operate without being spawned from a super-server, or when a single process handles multiple connections.  Otherwise, only the first connection attempt would get checked against its ACLs.
-When compared to host access control directives often found in daemons' configuration files, TCP Wrappers have the benefit of [[Run time (program lifecycle phase)|runtime]] ACL reconfiguration (i.e., services don't have to be reloaded or restarted) and a generic approach to network administration.
-This makes it easy to use for anti-[[Worm (computing)|Worm]] scripts, such as [[DenyHosts]] or [[Fail2ban]], to add and expire client-blocking rules, when excessive connections and/or many failed login attempts are encountered.
-While originally written to protect [[Transmission Control Protocol|TCP]] and [[User Datagram Protocol|UDP]] accepting services, examples of usage to filter on certain [[Internet Control Message Protocol|ICMP]] packets exist too, such as 'pingd' &ndash; the [[userspace]] [[Ping (networking utility)|ping]] request responder.<ref>[http://artofhacking.com/files/phrack/phrack52/P52-07.TXT Linux Ping Daemon] by route|daemon9 - Phrack Magazine Volume 8, Issue 52 January 26, 1998, article 07{{dead link|date=January 2014}}</ref>
 == 1999年木马事件 ==
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 == 外部链接 ==
-*[http://www.softpanorama.org/Net/Network_security/TCP_wrappers/index.shtml Softpanorama TCP Wrappers Information]
+*[http://www.softpanorama.org/Net/Network_security/TCP_wrappers/index.shtml Softpanorama上有关TCP Wrappers的信息]
+*[http://generationip.com/documentation/mini-howto/116-howto-on-tcp-wrapper tcp wrapper指南]
-*[http://www.360is.com/03-tcpwrappers.htm A laymans guide to TCP Wrappers and its history]
-*[http://generationip.com/documentation/mini-howto/116-howto-on-tcp-wrapper Howto on tcp wrapper]
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