Draytek Vigor2860 Series User Manual page 385

Available settings are explained as follows:
Item
Name
URL
Host IP Address
Access Method
After finishing all the settings here, please click OK to save the configuration.
Description
Type name of the profile. The length of the name is limited to
15 characters.
Type the address (function variation or IP address) or path of
the proxy server.
If you type function variation as URL, you have to type
corresponding IP address in this filed. Such field must match
with URL setting.
There are three modes for you to choose.
Disable – the profile will be inactive. If you choose Disable,
all the web proxy profile appeared under VPN remote dial-in
web page will disappear.
Secured Port Redirection – such technique applies private
port mapping to random WAN port. There are two restrictions
for proxy web server for such selection: 1) it is only used for
WAN to LAN access, the web server must be configured
behind vigor router; 2) web server gateway must be indicated
to vigor router. In addition, users must execute "Connect"
manually in SSL Client Portal page.
SSL – if you choose such selection, web proxy over SSL will
be applied for VPN.
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Vigor2860 Series User's Guide