EasyManuals Logo
Home>Juniper>Network Hardware>Junos OS

Juniper Junos OS User Manual

Juniper Junos OS
158 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
To Previous Page IconTo Previous Page
To Previous Page IconTo Previous Page
Page #25 background imageLoading...
Page #25 background image
WAN interface–The Ethernet interface labeled 0/0 on the services gateway chassis
(called as ge-0/0/0 in J-Web and the CLI ) is in Layer 3 (routing) mode.
This WAN interface is used to connect your services gateway to your ISP. By default,
the WAN port is a Dynamic Host Control Protocol (DHCP) client and configured to
receive an IP address through DHCP.
LAN interfaces–Ethernet interfaces labeled 0/1 through 0/7 (called as ge-0/0/1,
fe-0/0/2 to fe-0/0/7 ) are in Layer 2 mode (Ethernet switching mode) and assigned
to a VLAN (vlan-trust).
A VLAN interface (Layer 3 interface) is created to route traffic from the interfaces in
the LAN (ge-0/0/1, fe-0/0/2 to fe-0/0/7) to WAN (ge-0/0/0) interface and vice versa.
All traffic between the ports within the VLAN is locally switched. The trust zone VLAN
interface (vlan.0) has a default static IP of 192.168.1.1/24, and assigns IP addresses in
the 192.168.1.2 to 192.168.1.254 range to any device plugged into the trust interfaces.
Default Settings for Interfaces, Zones, Policy, and NAT
Table 3 on page 9 provides the default configuration of the interfaces on an SRX210.
Table 3: Default Interfaces Settings
IP AddressDHCP StateSecurity ZonesInterface
Dynamically assignedClientUntrustge-0/0/0
192.168.1.1/24ServerTrustvlan.0
NOTE: Because Ethernet interfaces (ge-0/0/1, fe-0/0/2 to fe-0/0/7) are
assigned to the trust zone (vlan-trust), any traffic originating from these
interfaces is treated as trust.
Table 4 on page 9 provides the default security policies to block traffic coming from the
untrust zone to devices in the trust zone.
Table 4: Default Security Policy Settings
Policy ActionDestination ZoneSource Zone
PermitUntrustTrust
DenyTrustUntrust
NOTE: In default configuration, all LAN interfaces are in Layer 2 mode and
they communicate with each other without need of any policy.
9Copyright © 2016, Juniper Networks, Inc.
Chapter 2: Understanding Factory Default Configuration Settings

Table of Contents

Questions and Answers:

Question and Answer IconNeed help?

Do you have a question about the Juniper Junos OS and is the answer not in the manual?

Juniper Junos OS Specifications

General IconGeneral
BrandJuniper
ModelJunos OS
CategoryNetwork Hardware
LanguageEnglish

Related product manuals