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TAU-4M.IP Subscriber gateway
DHCP
– dynamic access when IP address and all other required parameters are obtained via
DHCP;
Static
– in this case, you should specify L2TP server access settings manually:
IP address
– when the static access is used, PPTP server will be accessed from this address;
Netmask
– subnet mask for static access;
DNS server
– when the static access is used, local area network DNS;
Gateway
– when the static access is used, gateway for L2TP server access (if necessary);
Use secondary access for VoIP
– this option is available, if there are no dedicated interfaces for VoIP
service (
Use Internet settings
checkbox is selected). When the checkbox is not selected (default value),
VoIP service uses PPP interface for its operation; when selected, secondary access interface (IPoE) is
used;
Hardware traffic acceleration – works only for secondary access interface (IPoE).
PPTP and L2TP allow establishing secure communication link over the Internet between
the remote user's computer and organization's private network. PPTP and L2TP are based on
Point-to-Point Protocol (PPP) and act as its extension. First, the OSI model higher level data is
encapsulated into PPP, and then into PPTP or L2TP for tunnel transmission via public data
networks. PPTP and L2TP functionality differs. L2TP may be used not only in IP networks,
service messages for tunnel creation and data transfer use the same format and protocols.
PPTP may be used only in IP networks, it requires a dedicated TCP connection for tunnel
creation and usage. L2TP over IPSec
2
allows for the higher security level compared to PPTP
and provides the higher level of protection for business-critical data.
Due to its characteristics, L2TP is an attractive protocol for building virtual networks.
Use VLAN
– when the checkbox is selected, use VLAN ID specified in the 'VLAN ID' field for
Internet connection.
–
VLAN ID
– VLAN ID used for the service;
–
802.1P
– 802.1P marker (another name is
CoS (Class of Service)
), assigned to the outgoing
IP packets from this interface. It may take values from 0 (the lowest priority) to 7 (the
highest priority).
VLAN is a virtual local area network
. VLAN consists of a group of hosts combined into a single
network regardless of their location. Devices grouped into a single VLAN will have the same VLAN
ID.
Disable Masquerade
– when selected, disable source address substitution for packets sent from
LAN (disables masquerading).
When you choose
'Bridge'
operation mode, the following connection settings will be available:
Protocol
— select the protocol that will be used for device WAN interface connection to provider
network:
–
Static
– operation mode where IP address and all the necessary parameters for WAN
interface are assigned statically. When 'Static' type is selected, the following parameters
will be available for editing:
IP address
– specify device WAN interface IP address in the provider network;
Netmask
— external subnet mask;
2
Disable sender address translation for correct IPSec operation.
