- Cryptography, Data Encryption and Decryption Algorithms
- Deep Inspection Technologies and Firewalls
- IPsec Virtual Private Network (IPsec VPN)
- L2TP / PPTP Virtual Private Network (VPN)
- Layer 2/3 MPLS VPN based on BGP/MPLS
- Packet Filtering
- PKI: Public-Key Infrastructure
- Secret-Key or Symmetric-Key Cryptography
- Sieve: An Email Filtering Language
- SSL VPN: Secure Socket Layer Virtual Private Network
- Trusted Computing Technologies
- Windows Vista ISV security features for the Internet Explore (IE) based applications