User`s guide

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configured on a PPP interface. When this parameter is configured, the IP address
negotiated on the PPP link will be this one, not an address from the regular IP address pool.
Remote Peer IP subnet
In the event that multiple PPP interfaces are enabled for answering and that multiple remote
routers can dial into the local router, static routes cannot always be used to ensure that
packets which should be routed to the remote network are sent through the correct PPP
interface. This parameter can be used in conjunction with the ‘Remote Peer IP subnet mask’
parameter to associate a network subnet with a user.
When a remote unit “connects in” and authenticates with the unit, the unit will then create a
dynamic route (that will override any static routes) for the duration of the PPP session. The
interface for the dynamic route will be the PPP interface that answered the call. The network
address for the dynamic route will be taken from the entry in the user table that matches
the username that the remote unit used during the PPP authentication.
Remote Peer IP subnet mask
The remote subnet mask parameter is used in conjunction with the ‘Remote Peer IP subnet’
parameter above to fully qualify the network address for the user.
Public Key file
The name of the file containing the public key for that user. If the public key matches the
client supplied public key, the user is allowed access.
Related CLI Commands
Entity
Instance
Parameter
Values
Equivalent Web Parameter
user 0 dun_en on, off
Allow this user to log in over a PPP
network
user 0 phonenum Number
Use this number x when PPP dial-
back is required for this user
user 0 newpwd
String
(up to 14 chars)
Alternate IKE Key
user 0 fieldip IP Address Remote Peer IP address
user 0 ipaddr IP Address Remote Peer IP subnet
user 0 mask IP Mask Remote Peer IP subnet mask
user 0 keyfile Filename Public Key file
Firewall
Configuration – Security> Firewalls
All Digi TransPort routers incorporate a comprehensive firewall facility. A firewall is a
security system that is used to restrict the type of traffic that the router will transmit or
receive based on a combination of IP address, service type, protocol type, port number and
IP flags. Firewalls are used to minimise the risk of unauthorised access to the local network
resources by external users or to restrict the range of external resources to which local
users have access. A more detailed description of how firewalls operate on Digi routers is
given in the “Firewall Scripts” section. Refer to this section before attempting to implement
a firewall.