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SBC session border controllers
Network subsystem
This section specifies the network settings of the device and the IP packet routing table.
DHCP
— protocol that allows automatically obtaining IP address and other settings required for operation in
TCP/IP network. Allows the gateway to obtain all necessary network settings from DHCP server.
DNS
— protocol that allows obtaining domain information. Allows the gateway to obtain IP address of the
communicating device by its network name (hostname). It may be necessary, e.g. when specifying hosts in the
routing plan or using network name of the SIP server as its address.
TELNET
— protocol that allows establishing mechanisms of control over the network. Allows you to remotely
connect to the gateway from a computer for configuration and management purposes. For TELNET protocol oper-
ation, the data transfer process is not encrypted.
SSH
— protocol that allows establishing mechanisms of control over the network. Unlike the TELNET, this
protocol implies encryption of all data transferred through the network, including passwords.
VPN
— technology that allows one or more network connections (a logical network) on top of another
network (e.g., the Internet).
PPTP
— point-to-point tunneling protocol that allows a computer to establish secure connection with a server
by creating a special tunnel in a common unsecured network. One of VPN forms.
4.1.4.1
Routing table
In this submenu, you may configure static routes. A total of up to 255 routes can be configured.
Static routing
allows you to route packets to defined IP networks or IP addresses through the specified
gateways. Packets sent to IP addresses not belonging to the gateway IP network and falling outside the scope of
static routing rules will be sent to the default gateway.
Routing table is separated into 2 parts — manually configured routes that are displayed in the top part of the
table and automatically created routes.
Automatically created routes cannot be changed as they are created automatically when the network and
VPN/PPTP interfaces are established and required for their normal operation.
The table shows the routes used at the time of the request (
«Active»
in the status field), as well as unused
(
«Inactive»
in the status field), if the routes were set manually by the operator. Manually created routes, unlike
automatically created routes, are not deleted by the system when the corresponding interface is disabled and will
be reapplied when the interface is restored to serviceability.
Network subsystem –> Routing table
To create, edit or remove a route, use
«Objects» — «Add object», «Objects» — «Edit object»
and
«Objects»
— «Remove object»
menus and the following buttons:
–
«Add»;
–
«Edit»;
–
«Delete»
.