thanks your reply. But, why it can install the anyconnect pkg. Is there any other function provided by this package exclude the SSL-VPN in isr4221 router
Maybe you should go to understand what is anyconnect ? I don't know which article tells you that anyConnect can only be used for SSLVPN ? may be you should go to understand what is vpn ? what is sslvpn ?
why don't you go to the Cisco website to view the data sheet? Security (SEC) IP Base + Advanced Security: Zone-based firewall, IPsec VPN, EzVPN, Dynamic Multipoint VPN (DMVPN), FlexVPN