Best practices for securing an Internet-connected corporate WAN/LAN |
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EXPERT RESPONSE FROM: Roberta Bragg
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QUESTION POSED ON: 23 May 2003
What is the best method to secure a corporate WAN/LAN from the Internet? Are their some good guidelines available?
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Whoa! Yep, there are many things that must be done to secure a corporate WAN/LAN that is connected to the Internet. Here are some basic principles and, where relevant, some available guidelines.
- Remember that perimeter security is not the only thing you need to worry about. To see the big picture, you can get a roadmap from SANS. The site also has many guidelines and articles.
- Secure hosts on your network. See CIAC, NSA, the Center for Internet Security, Microsoft and other product guidelines for doing so. This includes not just servers, but workstations, too.
Visit:
- Have a corporate security policy that covers everything including what admins can do, acceptable Internet access and use policy. Have management support and if people break the rules, have repercussions.
- Use firewalls and other perimeter security devices. See info on SANs site, Trusecure (the NISTS firewall guide).
- Check out products before buying -- see reviews at ICSA labs.
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