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Security Redesign

Security Redesign AKA 'SRP' David Mitchell. Security Redesign. Security Redesign Project. What is it? Why are we doing it? Where is the project?. What Is It?. Replacement for our authetication server Production server based on FWTK. Current design proposal uses FreeRadius

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Security Redesign

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  1. Security Redesign AKA 'SRP' David Mitchell Security Redesign

  2. Security Redesign Project • What is it? • Why are we doing it? • Where is the project?

  3. What Is It? • Replacement for our authetication server • Production server based on FWTK. • Current design proposal uses FreeRadius • Minimal user visible changes • Challenge will not be displayed • Significant changes on servers and devices

  4. Why Are We Doing It? • We can't get the VPN to use the current system. • Current system requires client to display the challenge. • FWTK is ancient. • No longer updated or patched. • Current CryptoCard plugin is binary-only and fragile

  5. Where Is The Project? • Test server up and running. • Major clients have been tested • Waiting for security staff to sign off on the implementation.

  6. AuthSrv Details • Current AuthSrv based on FWTK code • FWTK has it's own on-wire authentication protocol. • Not included in any known OS or network device by default. • Installation on Unix using a PAM module written by Craig Ruff • Custom TACACS server runs which allows network devices to authenticate to it

  7. FreeRadius Details • Active and growing project • Includes (almost) native support for our tokens. • RADIUS is an RFC-defined standard protocol • Supported by many network devices and OS's • RADIUS already mandatory and in use for VPN and dialup. Soon for wireless.

  8. Hangups • Challenge will not be displayed to users by default. Some method to resync (may) be required • Password is currently stepped when challenge is displayed • New system only steps password on a successful authentication • Reduces or eliminates the need for a resync. May allow an attacker to guess a password

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