I use Checkpoint firewall-1 NG and cisco router to establish ipsec VPN. A Checkpoint vendor told me that checkpoint cannot connect with Cisco router when the router has a dynamic IP address.Is it true?Thanks!

I use IKE rsa encr, but allways get error message:12w0d: ISAKMP (0): received packet from 172.18.0.2 (N) NEW SA12w0d: ISAKMP: local port 500, remote port 50012w0d: ISAKMP (0:21): processing SA payload. message ID = 012w0d: ISAKMP (0:21): Checking ISA...

I use Unity 2.4.6. I installed Windows NT 4.0 sp 6a,IE 5.5 and can not install unity, the prompt shows that the windows version is low. I installed Windows as a PDC in its domain.When I use windows 2000 server, installed exchange 2000, the install is...