SMC ADSL2 Barricade 4-Port Annex B ADSL2/2+ Modem Router. Cabling technology: 10Base-T, 100Base-TX. DSL connection type: ADSL, Upstream data rate: 2 Mbit/s, Downstream data rate: 24 Mbit/s. Networking standards: IEEE 802.3, IEEE 802.3u, IEEE 802.1d. Switching protocols: RIP v1/2, Management protocols: TFTP, SNMP v1/2c, SNTP. Firewall security: NAT, SPI, DoS, IDS, Filtering: URL, VPN support: VPN pass-through (IPSec-ESP Tunnel mode, L2TP, PPTP)