Secure, real-time, proprietary operating system■ Stateful firewall using the Cisco Security Algorithm (SA)■ Sequence Number Randomization (SNR) to secure TCP connections■ Cut-through Proxy (CTP) for authenticating telnet, HTTP, and FTP connections■ Default security policies to ensure maximum protection, as well as the abilityto customize these policies and build your own policies■ Virtual private network (VPN) abilities: IPSec, SSL, and L2TP■ Intrusion detection and prevention systems (IDS and IPS)■ Address translation using dynamic and static network and port addresstranslation■ Stateful redundancy of connections and VPNs between two security appliances▲ Virtualization of policies using contexts
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