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38 Zoom AP+4 User Guide
DNS 3
The address of an alternate DNS server to use
in case DNS Servers #1 and #2 are down or
very slow
Clone MAC
Address
(Usually optional) Enter the MAC address of a
device in the LAN network if you want to use
that address for Internet access instead of the
AP+4’s MAC address.
Enable uPNP
Select this check box to enable
U
niversal
Pl
ug
a
n
d
P
lay, which lets devices connect
automatically to one another over the LAN,
Enable Ping
Access on WAN
Select this check box to allow someone to ping
the AP+4 over the Internet . This is useful for
troubleshooting – it can allow a technician to
remotely ping the AP+4 to see if it is working.
In normal use, this option should be disabled
for security reasons.
Enable Web
Server Access on
WAN
Select this check box to allow someone to
remotely access the AP+4’s built-in HTTP
server. Web server access is useful for
troubleshooting – it can allow a technician to
remotely check the AP+4 configuration
settings.
In normal use, this option should be disabled
for security reasons.
Enable IPsec
passthrough on
VPN connection
(PPTP/VPN only) Select this check box to let
network devices communicate via a
V
irtual
P
rivate
N
etwork (VPN) using
I
nternet
P
rotocol
sec
urity (IPsec), in which sending and
receiving devices share a public key for
encryption and decryption. The AP+4 simply
passes the encrypted packets back and forth
between the VPN clients and the ISP’s VPN
server.
Enable PPTP
passthrough on
VPN connection
(PPTP/VPN only) Select this check box to
protect VPN communication via
P
oint-to-
P
oint
T
unneling
P
rotocol. The AP+4 passes the
encrypted packets back and forth between the
VPN clients and the ISP’s VPN server.
Enable L2TP
passthrough on
VPN connection
(PPTP/VPN only) Select this check box to
protect VPN communication via
L
ayer
2
T
unneling
P
rotocol
,
an enhancement of PPTP
and L2F protocols. The AP+4 passes the
encrypted packets back and forth between the
VPN clients and the ISP’s VPN server.