python-vipaccess is a free and open source software (FOSS) implementation of Symantec's VIP Access client.
If you need to access a network which uses VIP Access for two-factor authentication, but can't or don't want to use Symantec's proprietary applications—which are only available for Windows, MacOS, Android, iOS—then this is for you.
Symantec VIP Access actually uses a completely open standard called Time-based One-time Password Algorithm for generating the 6-digit codes that it outputs. The only non-standard part is the provisioning protocol used to create a new token.
The reverse-engineering of the VIP Access protocol was done by Forest Crossman (cyrozap). See original blog post.
python-vipaccess is now maintained by Daniel Lenski (dlenski).