Cisco 836 router with "PLUS ISDN Dial backup" feature set. Cisco 836 SECURITY BUNDEL MET PLUS FEATURE SET ISDN. Cabling technology: UTP. MAC address table: 8000 entries. Switching protocols: IPSec,3DES,QoS,VoIP,UBR,VBRnrt, Data link protocols: SNMP,TELNET,SSH. Modem speed: 64 Kbit/s. Firewall security: 51 x 246 x 216, Authentication method: 3DES, PKI, IDS The Cisco 836 router delivers integrated enterprise-class security services, including hardware-accelerated IP Security (IPSec), Triple Data Encryption Standard (3DES) encryption for virtual private networks (VPNs), and stateful-inspection firewall for secure Internet connectivity. Optional advanced features—such as Cisco Easy VPN Remote (a software feature that allows simple deployment and management of VPNs); public key infrastructure (PKI) security requiring digital certificates; IPSec Network Address Translation transparency (NAT-T); the Cisco Intrusion Detection System (IDS)*; AES encryption*, and URL filtering*—help ensure that the small office receives the highest level of security, which contributes to the corporate network's security.