I want to use the feature of private VLAN , but 5.3 can't support that feature,so I want to update the CATOS, but as I know, the catos 5.4 or later can not run with the boorrom ROMMON ,5.1, when I show version as follow, display that the boorstrap is...

I config the site to site vpn between the pix 525e with software 6.3(4) and checkpoint ng p1the problem is can ping behing pix to the checkpoint side, but cann't ping opposite direction,when show crypto isakmp sa and show crypto ipsec sathat display ...

my hardware is cisco3662 with a NM-HDV-1E1-30 with VWIC-1MFT-E1 ,after a bad lightning strike, all the PBX E1 card and VWIC-1MFT-E1 and the 15454E-120TMGCBLhave been changed, and the show diag, display that all the hardware is well, but I can receive...

pix 501 to 515 site to site VPN tunnel, the user on the 501 side can simultaneously not more than 5 access 515 side lan through the only tunnel,when the license is 10 users and 5 ike peers, after update to 50 users, but the ike peers is still 5,