Remote access best practices

Decisions on the best way to provide remote access will vary depending on the tools you have chosen. Here are some thoughts.

  • Install and test RRAS servers before making them IAS (Internet Authentication Services) clients.
  • Immediately after installation, back up the IAS database file, ias.mdb, from the %systemroot%system32ias folder.
  • Back up the ias.mdb file whenever changes to the IAS configuration are made.
  • The IAAS and RRAAS servers should be dedicated servers. This will help eliminate the possibility that unauthorized users will gain access and weaken the security configuration.
  • Physically secure IAS, VPN and RRAS servers.
  • Protect IAS and VPN routers behind a firewall.
  • Turn on the account lockout feature.
  • Disable authentication protocols you do not use. Do not use PAP (Password Authentication Protocol) unless you must support legacy systems.
  • Determine desired logging for audit purposes and back up IAS logs.
  • Do not use telnet.
  • Secure remote administration sessions with IPsec or with VPNs if these sessions are being initiated externally to your network.
  • Increase encryption levels on Terminal

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  • Services when providing remote access.

To learn more about Windows 2000 Security, or to buy this book, click here.

This was first published in January 2001

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