STUN (2024)

Simple Traversal Underneath NATs (STUN) is a lightweight protocol that serves as a tool for application protocols in dealing with NAT traversal.

History

STUN was originally an acronym for Simple Traversal of UDP Through NAT. It was a simple client/server protocol with two usages: Finding the binding IP address and port in a NAT, and discovering the NAT behavior. This was published as RFC 3489. After the publication of RFC 3489, the work restarted to fix the problems, and the NAT behavior discovery usage was removed. Also TURN was designed as a STUN extension to create a packet relay. There was some deployments in the field of implementations based on this draft (draft-ietf-rfc3489bis-02 and draft-rosenberg-midcom-turn-08) After this, the development of STUN was essentially rebooted, and TURN became a STUN usage. The current draft of STUN (draft-ietf-behave-rfc3489bis-05) is in WGLC in the Behave WG of the IETF, and the relay usage (formerly known as TURN) will be soon in WGLC.

Protocol dependencies

  • UDP/TCP/TLS: Typically, STUN uses UDP, TCP or TLS as its transport protocol. The well known UDP/TCP port for STUN traffic is 3478. There is no well known port for TLS.

Example traffic

Todo

Wireshark

The STUN dissector is fully functional.

Preference Settings

There is no preference setting for the STUN dissector.

Example capture file

Todo

Display Filter

Todo

Capture Filter

Todo

External links

  • RFC 3489 STUN - Simple Traversal of User Datagram Protocol (UDP) Through Network Address Translators (NATs) - the first version of STUN.

  • rfc3489bis-05 Simple Traversal Underneath Network Address Translators (NAT) (STUN) - The current draft

Discussion

Imported from https://wiki.wireshark.org/STUN on 2020-08-11 23:26:00 UTC

STUN (2024)

FAQs

What does being STUN mean? ›

1. : to make senseless or dizzy by or as if by a blow. 2. : to overcome with astonishment or disbelief. stunned by the news.

What is STUN used for? ›

(Session Traversal Utilities for NAT) An IETF protocol for real-time voice, video and messaging in an IP network. STUN provides the mechanism to communicate with users behind a network address translation (NAT) firewall, which keeps their IP addresses private within the local network (LAN).

What is an example of the word STUN? ›

They were stunned by the news. = The news stunned them. His old friends were stunned at his success. She sat in stunned disbelief/silence.

What does STUN shock mean? ›

stun verb [T] (SHOCK)

to shock or surprise someone very much: News of the disaster stunned people throughout the world. She was stunned by the amount of support she received from well-wishers. SMART Vocabulary: related words and phrases. Surprising and shocking.

What happens when you get stun? ›

Stun guns make your muscles seize up like a Charley horse

This induces a state called neuromuscular incapacitation, which hijacks the communication link between your body and brain, making it difficult to make any voluntary movements.

What is the synonym of stun? ›

See also synonyms for: stunnedstunningstuns. On this page you'll find 82 synonyms, antonyms, and words related to stun, such as: amaze, astonish, astound, bemuse, bewilder, and confound.

What happens when you get shocked by a stun gun? ›

Stun guns and tasers are called "electronic weapons." They are handheld weapons that use electricity to stun a person. The electricity causes uncontrollable muscle contractions. After being stunned with electricity, the person usually falls to the ground.

Are STUN guns lethal? ›

Taser safety issues relate to the lethality of the Taser. The TASER device is a less-lethal, not non-lethal, weapon, since the possibility of serious injury or death exists whenever the weapon is deployed.

Is a stun gun a TASER? ›

TASER: Range. Stun guns are close proximity devices that require you to be next to the person attacking you. They use a painful shock to discourage further contact. On the other hand, a TASER uses projectile prongs that attach to a target further away—up to 15 feet.

What is the opposite of stun? ›

The correct answer is "Casual". Stunned means that one is so shocked that one is unable to react temporarily. Astonished, amazed and flabbergasted are synonyms of stunned so all these options are incorrect. Casual means relaxed and unconcerned so it is opposite to stunned.

Is stunned a negative word? ›

Stunned can be used for both positive and negative news.

How do you describe someone who is stunned? ›

adjective. in a state of mental numbness especially as resulting from shock. “lay semiconscious, stunned (or stupefied) by the blow” synonyms: dazed, stupefied, stupid confused. mentally confused; unable to think with clarity or act intelligently.

What does a stun feel like? ›

When you get hit with a stun gun, you feel a sharp pain, and you also feel a strong “push”. To me, I compare the feeling to being hit with a baseball bat. It stings, and then the pain fades. Then I usually “tingle” for a few minutes as the electricity dissipates.

How long does electricity stay in the body after a shock? ›

Electricity does not stay in the body but passes through, charging the electrons that cause damage to the victim. Electricity travels at the speed of light, so there is no way for it to stay in a body but travel through it, exiting from any point.

How long are you stunned with a stun gun? ›

Incapacitation lasts for the duration of the discharge, which is typically 5 seconds but can be 15 seconds or longer if pressure on the trigger is maintained. The TASER X26 battery has the capacity to deliver up to 195 discharges of 5 seconds each,1 which corresponds to a duration of over 15 minutes.

What does it mean to drive stun someone? ›

"Drive Stun" is "the process of using the EMD (Electro Muscular Disruption) weapon as a pain compliance technique. This is done by activating the TASER [device] and placing it against an individual's body. This can be done without an air cartridge in place or after an air cartridge has been deployed."

What is stun damage? ›

Stun damage is non-lethal damage. A PC who takes stun damage is defying danger to do anything at all, the danger being “you're stunned.” This lasts as long as makes sense in the fiction—you're stunned until you can get a chance to clear your head or fix whatever stunned you.

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