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PeSIT is an open file transfer protocol often associated with Axway. It was originally developed before the availability of the Internet as we know it today, to connect mainframe computers via X25. ISDN modems or TCP/IP based WAN’s.

Like Sterling Commerce’s proprietary NDM file transfer protocol, PeSIT has now been written into the standard communication specifications of several industry consortiums and government exchanges, thus ensuring a high degree of long-term dependence on Axway technology. PeSIT is required far more often in Europe than in the United States due to Axway’s French roots and home turf advantage.

Also like NDM, PeSIT is normally used in internal (or trusted WAN) transfers; other protocols are typically used for transfers across the Internet.

PeSIT stands for “Protocol d’Echanges pour un Systeme Interbancaire de Telecompensation” and was designed to be a specialized replacement for FTP to support European interbank transactions in the mid-1980’s.  One of the primary features of the protocol was “checkpoint restart”.

BEST PRACTICE: PeSIT, NDM and other protocols should be avoided in new deployments unless specifically mandated by industry rule or statute.   The interesting capabilities these protocols offer (e.g., checkpoint restart, integrity checks, etc.) are now also available in vendor-neutral protocols, and from vendors who allow wider and less expensive licensing of connectivity technology than Axway and Sterling Commerce (now IBM).

FACTS: The PeSIT standard was initially written in 1989 and has not been updated since. At the time it was an advanced protocol, however in the last thirty plus years other more modern protocols have followed suit replicating specific features, whilst also keeping pace with modern encryption standards such as TLS 1.2/1.3. Further information about PeSIT can be found at https://pesit.org/ and you can view the 1989 PeSIT protocol specification here.

PRODUCTS: Due to the complex nature of PeSIT configuration and the limited number available experts in the protocol, it is not widely supported. Axway continue to support PeSIT, whereas other vendors provide PeSIT support in order to be interoperable with Axway’s software. Products supporting the CFT protocol include: