Installation Guide
Table Of Contents
- PMP 450i and PTP 450i Configuration and User Guide
- Safety and regulatory information
- Contents
- List of Figures
- List of Tables
- About This Configuration and User Guide
- Chapter 1: Reference information
- Chapter 2: Configuration
- Preparing for configuration
- Task 1: Connecting to the unit
- Task 2: Configuring IP and Ethernet interfaces
- Configuring the AP IP interface
- NAT, DHCP Server, DHCP Client and DMZ in SM
- Configuring the SM IP interface with NAT disabled
- Configuring the SM IP interface with NAT enabled
- NAT tab of the SM with NAT disabled
- NAT tab of the SM with NAT enabled
- Reconnecting to the management PC
- VLAN Remarking and Priority bits configuration
- VLAN tab of the AP
- VLAN tab of the SM
- VLAN Membership tab of the SM
- PPPoE tab of the SM
- NAT Port Mapping tab of the SM
- Task 3: Upgrading the software version and using CNUT
- Task 4: Configuring General and Unit settings
- Task 5: Configuring security
- Isolating APs from the internet
- Encrypting radio transmissions
- Managing module access by passwords
- Requiring SM Authentication
- Filtering protocols and ports
- Encrypting downlink broadcasts
- Isolating SMs
- Filtering management through Ethernet
- Allowing management only from specified IP addresses
- Configuring management IP by DHCP
- Restricting radio Telnet access over the RF interface
- Security tab of the AP
- Filtering protocols and ports
- Protocol Filtering tab of the AP
- Port configuration tab of the AP
- Security tab of the SM
- Protocol Filtering tab of the SM
- Port Configuration tab of the SM
- Task 6: Configuring radio parameters
- Task 7: Setting up SNMP agent
- Task 8: Configuring syslog
- Task 9: Configuring remote access
- Task 10: Monitoring the AP-SM Link
- Task 11: Configuring quality of service
- Maximum Information Rate (MIR) Parameters
- Token Bucket Algorithm
- MIR Data Entry Checking
- Committed Information Rate (CIR)
- Bandwidth from the SM Perspective
- Interaction of Burst Allocation and Sustained Data Rate Settings
- High-priority Bandwidth
- Traffic Scheduling
- Setting the Configuration Source
- Quality of Service (QoS) tab of the AP
- DiffServ tab of the AP
- Quality of Service (QoS) tab of the SM
- DiffServ tab of the SM
- Task 12: Performing an Sector Wide SA
- Task 13: Zero Touch Configuration Using DHCP Option 66
- Task 14: Configuring Radio via config file
- Task 15: Configuring a RADIUS server
- Understanding RADIUS for PMP 450i
- Choosing Authentication Mode and Configuring for Authentication Servers - AP
- SM Authentication Mode – Require RADIUS or Follow AP
- Handling Certificates
- Configuring your RADIUS servers for SM authentication
- Assigning SM management IP addressing via RADIUS
- Configuring your RADIUS server for SM configuration
- Using RADIUS for centralized AP and SM user name and password management
- RADIUS Device Data Accounting
- RADIUS Device Re-authentication
PMP 450i and PTP 450i Configuration and User
Task 5: Configuring security
The figure below depicts a user attempting two telnet sessions. One is targeted for
the AP (orange) and one is targeted for the network upstream from the AP (green).
If RF Telnet Access is set to “Disabled”, the Telnet attempt from the user to the AP
is blocked, but the attempt from the user to Network is allowed to pass through the
Cambium network.
Figure 32 RF Telnet Access Restrictions (orange) and Flow through (green)
Key Security Considerations when using the RF Telnet Access
Feature
To ensure that the network is fully protected from unauthorized AP Telnet sessions,
the following topics must be considered:
Securing AP Clusters
When working with a cluster of AP units, to eliminate potential security holes
allowing Telnet access, ensure that the RF Telnet Access parameter is set to
“Disabled” for every AP in the cluster. In addition, since users situated below the
AP are able to pass Telnet sessions up through the SM and AP to the upstream
network (while AP RF Telnet Access is set to “Disabled”), ensure that all
CMM3/CMM4 or other networking equipment is secured with strong passwords.
Otherwise, users may Telnet to the CMM3/CMM4 or other networking equipment,
and subsequently access network APs (see Figure 33) via their Ethernet interfaces
(since RF Telnet Access only prevents Telnet sessions originating from the AP’s
wireless interface).
Figure 33 RF Telnet Access Restriction (orange) and Potential Security Hole
(green)
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pmp-0957 (April 2015)