With IPHost Network Monitor you can run simple snmp requests against a D-Link device in your network.
swL2DevCtrlTelnetTcpPort
Switch L2 Device Control Telnet Tcp Port
1.3.6.1.4.1.171.11.70.5.2.1.2.14.2
This object designates TCP ports. When Telnet is disabled, this object is not accessible.
Back to DES3552-L2MGMT-MIB MIB page.
IPHost Network monitor allows you to monitor swL2DevCtrlTelnetTcpPort on D-Link device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring D-Link VPN routers right now.