ZyXEL Communications LTE3316-M604, Руководство пользователя

Страница: 129 / 193

Chapter 18 VPN
LTE3316 Series User’s Guide
129
The following table describes the labels in this screen.
18.6 VPN Passthrough
Use this screen to allow VPN traffic through the Zyxel Device. Click Configuration > Application > VPN >
VPN Passthrough to open the following screen.
Figure 74 Configuration > Application > VPN > VPN Passthrough
Table 53 GRE: Add
LABEL DESCRIPTION
Name Enter a name for this GRE tunnel, this name must be 1~9 characters long.
Enable Select this to enable the GRE tunnel.
Remote IP Specify the IP address of the remote gateway to which this interface tunnels traffic.
TTL Specify the Time To Live (TTL). This is a time limiter that defines the lifetime of a
packet. Every time the packet is forwarded, it will reduce the TTL value by 1, if this
time limiter reaches 0, the packet will be discarded. The default value is 255.
Key This displays the key for the GRE connection, a value between 0 ~ 9999999999. The
GRE tunnel will request this key for packet transportation. The client needs to enter
this key to authenticate the source of the packet.
Keep Alive The Zyxel Device can send periodic keep alive frames, so the GRE tunnel does not
go down. Specify how often these frames are sent in second(s) to keep the GRE
tunnel up.
Tunnel IP Specify the IP address to use as the source address for the packets this interface
tunnels to the remote gateway. The remote gateway sends traffic to this IP address.
MTU Maximum Transmission Unit. Type the maximum size of each data packet, in bytes,
that can move through this interface. If a larger packet arrives, the Zyxel Device
divides it into smaller fragments. The default value is 2000.
Remote Subnet Enter the remote subnet mask to which this interface tunnels traffic.
Back Click Back to return to the previous screen without saving.
Cancel Click Cancel to exit this screen without saving.
Apply Click Apply to save your changes back to the Zyxel Device.