Juniper Networks SSG 20 manual Antennae Types, USB Port

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SSG 20 Hardware Installation and Configuration Guide

Antennae Types

The SSG 20-WLAN device supports three types of custom-built radio antennae:

„Diversity antennae — The diversity antennae provide 2dBi directional coverage and a fairly uniform level of signal strength within the area of coverage and are suitable for most installations. This type of antennae is shipped with the device.

„External omnidirectional antenna — The external antenna provides 2dBi omnidirectional coverage. Unlike diversity antennae, which function as a pair, an external antenna operates to eliminate an echo effect that can sometimes occur from slightly delayed characteristics in signal reception when two are in use.

„External directional antenna — The external directional antenna provides 2dBi unidirectional coverage and is appropriate for locations like hallways and outer walls (with the antenna facing inward).

USB Port

The USB port on the back panel of an SSG 20 device accepts a universal serial bus (USB) storage device or USB storage device adapter with a compact-flash disk installed, as defined in the CompactFlash Specification published by the CompactFlash Association. When the USB storage device is installed and configured, it automatically acts as a secondary boot device if the primary compact-flash disk fails on startup.

The USB port allows file transfers such as device configurations, user certifications, and update version images between an external USB storage device and the internal flash storage located in the security device. The USB port supports USB 1.1 specification at either low speed (1.5M) or full speed (12M) file transfer.

To transfer files between the USB storage device and an SSG 20, perform the following steps:

1.Insert the USB storage device into the USB port on the security device.

2.Save the files from the USB storage device to the internal flash storage on the device with the save {software config image-key} from usb filename to flash CLI command.

3.Before removing the USB storage device, stop the USB port with the exec usb-device stop CLI command.

4.It is now safe to remove the USB storage device.

If you want to delete a file from the USB storage device, use the delete file usb:/filename CLI command.

If you want to view the saved file information on the USB storage device or internal flash storage, use the get file CLI command.

18„ Back Panel

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Contents SSG 20 Hardware Installation and Configuration Guide Copyright Notice Table of Contents Appendix B Initial Configuration Wizard About This Guide Organization WebUI ConventionsNavigational Path and Configuration Settings CLI ConventionsObtaining Documentation and Technical Support Hardware Overview Port and Power Connectors Front Panel System Status LEDsStatus LED Descriptions Name Color Name Color Status Description Link Port DescriptionsLAN Port LEDs Name Color Status Description TX/RXMini Physical Interface Module Port Descriptions Mini PIMs for the SSGMini PIM LED States on the SSG Type Name Color Description Power Adapter Back PanelRadio Transceivers Grounding Lug Antennae Types USB PortInstalling and Connecting the Device Installing Equipment Before You BeginSSG 20 Front-mount Connecting Interface Cables to a Device Connecting the PowerConnecting a Device to a Network Connecting a Device to an Untrusted NetworkConnecting Mini PIMs to an Untrusted Network Serial AUX/Console PortsConnecting a Device to an Internal Network or a Workstation Microfilter and Splitter on Your Network ConnectionWireless Antennae Configuring the Device Accessing a Device Using a Console ConnectionUsing the WebUI Using Telnet WebUI Login PromptDefault Device Settings Default Physical Interface to Zone Bindings Port LabelDMZ Wireless and Logical Interface Bindings Interface ZoneBasic Device Configuration Root Admin Name and PasswordDate and Time Bridge Group InterfacesAdministrative Access Management ServicesDefault Route Hostname and Domain NameManagement Interface Address Backup Untrust Interface Configuration Basic Wireless ConfigurationDefault SSG 20-WLAN Configuration WPA Wireless Authentication and Encryption OptionsWPA-PSK WPA2-PSKActivate wireless changes Mini PIM Configuration ADSL2/2+ InterfaceVirtual Circuits PPPoE or PPPoA Static IP Address and Netmask Isdn Interface T1 InterfaceE1 Interface Modem Interface Basic Firewall Protections Verifying External ConnectivityResetting a Device to Factory Defaults Page Servicing the Device Required Tools and PartsReplacing a Mini-Physical Interface Module Removing a Blank Faceplate Removing a Mini PIMInstalling a Mini PIM Removing a Mini PIMUpgrading Memory Bottom of DeviceUnlocking the Memory Module 56 „ Upgrading Memory Specifications Physical ElectricalEnvironmental Tolerance EMC Emissions SafetyCertifications EMC ImmunityGND ConnectorsRJ-45 Connector Pinouts Name Description DSRDTR DB-9 Connector Pinouts Name DescriptionDCD RTSPage Initial Configuration Wizard Administrator Login Window Rapid Deployment WindowWlan Access Point Window Physical Interface WindowAdsl Interface Configuration Window ADSL2/2+ Interface WindowFields in Adsl Interface Configuration Window Description VPI/VCIT1 Interface Windows T1 Physical Layer Tab WindowFields in T1 Physical Layer Tab Window Description 70 „ Page Cisco Hdlc Option with Cisco Hdlc Tab Window E1 Interface Windows E1 Physical Layer Tab WindowFields in E1 Physical Layer Tab Window Description Isdn Interface Windows Field DescriptionFields in Isdn Physical Layer Tab Window Description SPID1SPID2 Page 92 Modem Interface Window Eth0/0 Interface Untrust Zone WindowEth0/1 Interface DMZ Zone Window Bgroup0 Interface Trust Zone Window Bgroup0 Interface WindowWireless0/0 Interface Trust Zone Window Fields in Bgroup0 Interface Window DescriptionFields in Wireless0/0 Interface Window Description Interface Summary WindowSsid Wireless Dhcp Interface Window Physical Ethernet Dhcp Interface WindowConfirmation Window Confirmation WindowIndex AdslVPI/VCI
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