Hole punching

Hole punching is a computer networking technique for establishing communications between two parties in separate organizations who are both behind restrictive firewalls. Used for applications such as online gaming, P2P and VoIP, both clients establish a connection with an unrestricted third-party server that uncovers external and internal address information for them. Since each client initiated the request to the server, the server knows their IP addresses and port numbers assigned for that session, which it shares one to the other. Having valid port numbers causes the firewalls to accept the incoming packets from each side. ICMP hole punching, UDP hole punching and TCP hole punching respectively use Internet Control Message, User Datagram and Transmission Control Protocols.

See also

• Firewall pinhole
• Hamachi - software example
• ICMP hole punching
• UDP hole punching
• TCP hole punching
• Universal Plug and Play

References

• Ford, Bryan; Srisuresh, Pyda; Kegel, Dan (2005), Peer-to-Peer Communication Across Network Address Translators
• Schmidt, Jürgen (2006), The hole trick

External links

This network-related software article is a stub. You can help Wikipedia by expanding it.v · Categories: Computer network security Computer science stubs Internet stubs Network software stubs Wikimedia Foundation. 2010. Игры ⚽ Нужно решить контрольную? Prefetto You've Got a Friend in Me Look at other dictionaries: Hole Punching — ist eine Technik, mit der eine Netzwerkverbindung zwischen zwei Rechnern hergestellt werden kann, auch wenn beide sich hinter restriktiven Firewalls befinden. Es handelt sich um einen Spezialfall des Tunnelling. Genutzt wird diese Technik für… …   Deutsch Wikipedia Hole punching — Пробивка отверстий …   Краткий толковый словарь по полиграфии UDP hole punching — In computing, UDP hole punching refers to a commonly used NAT traversal technique.DescriptionNAT traversal through UDP hole punching is a method for establishing bidirectional UDP connections between Internet hosts in private networks using NAT.… …   Wikipedia TCP hole punching — NAT traversal through TCP hole punching is a method for establishing bidirectional TCP connections between Internet hosts in private networks using NAT. It does not work with all types of NATs as their behavior is not… …   Wikipedia Hole punching apparatus — Устройство для пробивки отверстий …   Краткий толковый словарь по полиграфии Hole punching machine — Дыропробивной станок …   Краткий толковый словарь по полиграфии File hole punching — Пробивание отверстий в конторских формах, которые предназначены для вставки в картотеку …   Краткий толковый словарь по полиграфии Hole punch — A hole punch (known also as a hole puncher, paper puncher, holing pincer, or rarely perforator) is a common office tool that is used to create holes in sheets of paper, often for the purpose of collecting the sheets in a binder or folder. History …   Wikipedia Punching — Punch Punch, v. t. [imp. & p. p. {Punched}; p. pr. & vb. n. {Punching}.] [From {Punch}, n., a tool; cf. F. poin[,c]onner.] To perforate or stamp with an instrument by pressure, or a blow; as, to punch a hole; to punch ticket. [1913 Webster]… …   The Collaborative International Dictionary of English Punching machine — Punch Punch, v. t. [imp. & p. p. {Punched}; p. pr. & vb. n. {Punching}.] [From {Punch}, n., a tool; cf. F. poin[,c]onner.] To perforate or stamp with an instrument by pressure, or a blow; as, to punch a hole; to punch ticket. [1913 Webster]… …   The Collaborative International Dictionary of English 18+ © Academic, 2000-2024 Contact us: Technical Support, Advertising Dictionaries export, created on PHP, Joomla, Drupal, WordPress, MODx. Mark and share Search through all dictionaries Translate… Search Internet Share the article and excerpts Direct link … Do a right-click on the link above and select “Copy Link”