what is encapsulating security payload (esp)
IPsec The IP Encapsulating Security Payload (ESP)[19] was researched at the Naval Research Laboratory starting in 1992 as part of a DARPA-sponsored research project, and was openly published by IETF SIPP[20] Working Group drafted in December 1993 as a security extension for SIPP. This ESP was originally derived from the US Department of Defense SP3D protocol, rather than being derived from the ISO Network-Layer Security Protocol (NLSP). The SP3D protocol specification was published by NIST in the late 1980s, but designed by the Secure Data Network System project of the US Department of Defense. Encapsulating Security Payload (ESP) is a member of the IPsec protocol suite. It provides origin authenticity through source authentication, data integrity through hash functions and confidentiality through encryption protection for IP packets. ESP also supports encryption-only and authentication-only configurations, but using encryption without authentication is strongly discouraged because it is insecure.[21][22][23]
Trouble in Terrorist Town Detectives and traitors have the option to use certain equipment to achieve their goal. Tools available to traitors include C-4 explosives, knives, radio devices to play various gun sounds to throw other players off, flare guns to permanently dispose of bodies, and devices to disguise their identity. Detectives have reciprocating devices at their disposal, which include DNA scanners for discovering the perpetrators of murders and defusal kits for the deactivation of C-4 explosives. Traitors and detectives may both make use of body armour for personal protection against enemy weaponry, radar devices to discover the locations of other players and a teleportation device which allows them to mark a certain location and teleport to that location from anywhere else on the map for a limited number of uses.[3] Other items that can be obtained by detectives and traitors are determined by server administrators who add additional items to their servers to appeal to players.[citation needed]