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●MTU Size：MTU means Maximum Transmission Unit, the largest
physical packet size, measured in bytes, that a network can transmit.
The default value is 1452. Please set up the MTU according to your
system environment. Only enter a new MTU when your ISP requires,
otherwise, please leave it as the default setting. When using PPPoE
connection, you may need to change MTU settings to maintain the
connection with your ISP, however, if the incorrect value was entered,
you may be unable to access certain websites. Reducing the packet size
can help connecting to certain websites or speeding up the transmission
rate.
●DNS Mode to get IP：You can either choose to "Attain DNS
Automatically" or "Set DNS Manually" for obtaining IP addresses.
●DNS 1/2/3： Enter the DNS IP address provided by your ISP.
●Clone Mac Address：The default MAC address of BLW-54CW3 is the
Network Interface Card's (NIC) MAC address on the WAN side. If
you were asked to use the NIC provided by the ISP, enter the MAC
Address provided by your ISP.
●UPnP：Click the check box to enable the UPnP function for your
Windows system.
●Ping Access on WAN：Ping is a common and useful tool to know the
connection status of a specified remote network device, but some
malicious intruder will try to fill your network bandwidth with a lot of
PING request data packet, to make your internet connection become
very slow, even unusable. Check this box and the router will reply all
inbound PING request, and when you activate this function, not only
you but all the users will be able to ping your router from Internet.
◆Enable：Click the check box to enable Ping Access on WAN
function.
●VPN pass through：The VPN (Virtual Private Network) technology
utilizes security schemes such as data capsulation and encoding to allow
its user to use the Internet as if it is a WAN directly connected via a
leased line. BLW-54CW3 supports three protocols: IPsec,PPTP and
Chapter2 Basic Setup & Configuration
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