By setting PPPo E Server to allocate PPPo E account to the private network users the router only allows the users with legal account & passed the authentication to access the Internet via Cooperating with IP-based Bandwidth Control it is capable to confine the bandwidth usage of certain PPPo E account Moreover the E-Bulletin function is able to release bulletin in the form of webpage to certain user groups periodically which notifies the users about the expiration date of the PPPo E account With the above features the router will prioritize different users in surfer jurisdiction for a better reasonable management The TL-ER5120 features three free changeable ports that can be set to either LAN or WAN allowing the router to support up to four WAN ports to satisfy various Internet access requirements through one device The Intelligent Load Balancing function can distribute data streams according to the bandwidth proportion of every WAN port to raise the utilization rate of multi-line broadband With IP-based Bandwidth Control & Session Limit functions network administrators can flexibly manage network bandwidth to optimize bandwidth usage The TL-ER5120 Gigabit Load Balance Broadband Router from TP-LINK possesses excellent data processing capabilities & multiple powerful functions including Load Balance Access Control IMP2P Blocking Do S Defense Bandwidth Control Session Limit PPPo E Server & so on which consumedly meet the needs of small & medium enterprises hotels & communities with large volumes of users demanding an efficient & easy-to-manage network with high security For defense against external threats TL-ER5120 features an automatic protection to detect & block Denial of service (Do S) attacks such as TCPUDPICMP Flooding TCP Scanning Ping of Death & other related threats Moreover this router offers a hardware DMZ port which means that you can setup public servers without exposing your internal network to avoid attacks from external threats For better management of the internal network TL-ER5120 allows administrators to set rules to block specific web sites & IMP2P applications with just one-click & restrict staff to use specific services such as FTP HTTP & SMTP 1 fixed gigabit WAN port 1 fixed gigabit LANDMZ port & 3 free changeable gigabit WANLAN ports Abundant security features including ARP Inspection Do S Defense URLKeyword Domain Filter & Access Control Deploys One-Click restriction of IMP2P applications to manage staff online behavior Supports PPPo E Server for the better management of internal network Load Balancing automatically selects the best line according to the load Professional 4k V lightning protection keeps your investments as safe as possible AC Input Voltage 100 to 240 VAC Console Port 1 x RJ-45 Depth 220 cm Electrical Frequency 50 to 60 Hz Ethernet Standards IEEE 8023 8023u 8023z 8023ab Firewall Filtering MAC Filtering; URLKeywords Filtering; Web Content Filtering (Java Active X Cookies) Flash Memory 8 MB Form Factor 1U Rackmount Height 44 cm In The Box TL-ER5120 • Resource CD • Power Cord • Rack-mount Kit • Installation Guide LAN Port Connector RJ-45 LAN Port Speed 101001000 Mbps LED Status Indicators PWR SYS Link Act Speed WAN DMZ Management Maintenance Web CLITelnet Management Interface • Remote Management • Export & Import Configuration • NTP Synchronize • Syslog Support; Service PPPo E Server • E-Bulletin • Dynamic DNS (Dyndns No-IP Peanuthull Comexe) Memory Size 128 MB Memory Type DDR2 Model Name TL-ER5120 MTBF 120000 Hrs Number of LAN Ports 4 port (s) Number of WAN Ports 1 port (s) Operating Humidity 10 to 90 Operating Temperature 0 to 40 °C Power Adaptor Type Internal Product Type Network Router Protocols Supported TCPIP DHCP ICMP NAT PPPo E SNTP HTTP DNS IPsec PPTP L2TP Safety CE FCC Ro HS Security ARP Inspection Sending GARP Packets; ARP Scanning by WANLAN; IP-MAC Binding • Application Control IM P2P Web IM Web SNS Web Media Protocol Proxy Blocking • Attack Defense TCPUDPICMP Flood Defense; Block TCP Scan (Stealth FINXmas Null); Block Ping from WAN • DMZ Port 1 Hardware DMZ Port System Requirements Microsoft Windows 98SE NT 2000 XP Vista or Windows 7 MAC OS Net Ware UNIX or Linux Throughput 350 Mbps WAN Port Connector RJ-45 WAN Port Speed 101001000 Mbps Width 440 cm