Verifies that your IPSec tunnel not blocked ports 161 and 162, which are the ports of the SNMP protocol (Simple Network Manage Protocol), if these are blocked you can not manage your device
Also verifies that SNMP access is not blocked by a router access list that blocks the possibility to manage the router
To do this follow these instructions:
Go to Administration > Management
Router Userlist: Select the desired router user list.
Router Username: Enter the user name here.
Router Password: Enter the password.
Re-enter to Confirm: Retype the password in this field.
SNMP Select Enable if you wish to use SNMP. To use SNMP, you need SNMPsoftware on your PC.
System Name: Enter a suitable name to identify this device. It will be displayed byyour SNMP software.
System Contact: Enter contact information for the system.
System Location: Enter the location of the system.
Read Community: Enter the SNMP community name for SNMP “Get” commands.
Write Community: Enter the SNMP community name for SNMP “Set” commands.
Trap Community Enter the SNMP: community name for SNMP “Trap” commands.
Trap To: Enter the IP Address of the SNMP Manager to which traps will be sent. If
desired, this may be left blank.
You can use Universal Plug and Play (UPnP) to set up public services on yournetwork. When the UPnP function is enabled, Windows XP can add or deleteentries to the underlined UPnP Forwarding Table. Some Internet games requireenabling UPnP.
UPnP If you want to use UPnP, keep the default setting, Enable. Otherwise, selectDisable.
By the way here I leave a user's manual for your device
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