Re: HA for version 6.3.0r14b and 6.3.0r14

The "b" version is the one you will want to download and use.  The original version had a serious security flaw as discussed in the thread below with links to the Juniper announcements.

You should arrange for the upgrade to the b version as soon as practical.

http://forums.juniper.net/t5/ScreenOS-Firewalls-NOT-SRX/Critical-ScreenOS-Security-Flaw-6-2-0r15-through-6-2-0r18-and-6/td-p/285570