I too agree with firewall72 . 6.3R4 would be a better choice as Secure Access 2500, 4500, and 6500 appliances require software versions 6.1 or later. More over latest releases will be supported for a long time. -Ravikiran ... View more

Yes, this is a known issue. SA sends User ID instead of hostname. Its is getting fixed in 6.3R5 and 6.4R2 releases. In the fixed buids, 1. SA device will send client hostname as a DHCP option in DHCP requests for NC. 2. SA wont send a dhcp release packet after a NC session ends. 3. SA will keep the user record for NC users in all cases for 24 hours since last NC access. So the DHCP server should configured in such a way that it purges the NC IP records after 1 day for as SA wont send a release packet (This is DHCP server side settings). Other wise all the IP's in the pool might get consumed if the users login from multiple PC's like public internet kiosks. Please wait for these releases and upgrade to them. ... View more