Useful Resource Sites for Network Security, Firewalls, and VPNs

A variety of resource sites are available to you for more information on network security, firewalls, and VPNs. Although this list of online and offline resources is a good start, it is impossible to cover every quality source. Here are some sites and books covering the critical topics just to get you started.

If you need additional information, you are only a search engine click or a bookstore trip away from the answer.

At writing, all websites listed here were valid; however, with the mergers, acquisitions, and other changes in the industry, some of these links may change over time.

Firewall Vendors

1. Check Point Software
2. Cisco
3. Juniper Networks
4. Fortinet
5. McAfee
6. Palo Alto Networks
7. Sophos
8. SonicWALL
9. WatchGuard

Virtual Private Network Vendors

1. Cisco
2. Citrix
3. F5 Networks
4. Juniper Networks
5. Microsoft
6. OpenVPN
7. Openswan

Network Security Websites

1. CERT (security research)
2. Gibson Research Corporation (security testing and tools)
3. ISACA (standards/certifications)
4. (ISC)2 (standards/certifications)
5. Krebs on Security
6. National Institute of Standards and Technology (NIST)/Computer Security Research Center (CSRC)
7. MITRE (nonprofit cybersecurity think tank and research facility)
8. Open Web Application Security Project (OWASP)
9. SANS (security research and training)
10. Symantec (security vendor)

Network Security Magazine Websites

1. CSO Magazine
2. SC Magazine
3. Search Security