An authentication token that can only be used once.
OpenSSL is an open source implementation of the SSL and TLS protocols. Their versions are available for most Unix-like operating systems.
Organisation Validation (OV)
There are three types of SSL certificates, with differing validation methods. These are Domain Validation (DV), Organisation Validation (OV) and Extended Validation (EV) certificates. OV certificates sit between Domain and Extended Validation certificates. OV proves the authenticity of your organisation and demonstrates to the customer that you are a responsible and trustworthy entity.
Outlook Anywhere is a feature that makes it possible for a user to access their Exchange Server mailbox from any workstation using the full Outlook client, regardless of the network they are currently logged on to.
OWA (Outlook Web Access)
Created by Microsoft, OWA (Outlook Web Access) is the web browser interface to Exchange Server mailbox and public folder data. Its enables users to access their email, contacts and calendar from any web browser without having to run a pre-configured Outlook client program.
OWASP (The Open Web Application Security Project)
The Open Web Application Security Project is an online community dedicated to web application security. Their aim is to ensure software security remains visible, so that individuals and organisations worldwide can make informed decisions about software security risks.