Resumen
Simple Object Access Protocol (SOAP) is the primary transport mechanism for the Web services architecture. It is a lightweight protocol that can replace more complicated, distributed object technologies for many applications. However, use of Web servers, by SOAP to tunnel through firewalls, may limit its usefulness because it potentially opens corporations to external access. As it becomes more ubiquitous, SOAP may increasingly find itself in the sights of security personnel. SOAP is Based On Extensible Markup Language (XML) and Hypertext Transfer Protocol (HTTP). SOAP can tunnel through firewalls without any concessions from network security personnel. SOAP transmits messages by placing a routing engine (part of the SOAP processor) behind the Web server. As SOAP is increasingly used to access potentially powerful internal services, firewalls may filter its use. This effect has already been seen with email, as many organizations now strip potentially virus-laden attachments from all incoming and outgoing email.