Web Management Guide-R01
Table Of Contents
- How to Use This Guide
- Contents
- Figures
- Tables
- Getting Started
- Web Configuration
- Using the Web Interface
- Basic Management Tasks
- Displaying System Information
- Displaying Hardware/Software Versions
- Configuring Support for Jumbo Frames
- Displaying Bridge Extension Capabilities
- Managing System Files
- Setting the System Clock
- Configuring the Console Port
- Configuring Telnet Settings
- Displaying CPU Utilization
- Configuring CPU Guard
- Displaying Memory Utilization
- Resetting the System
- Interface Configuration
- VLAN Configuration
- Address Table Settings
- Spanning Tree Algorithm
- Congestion Control
- Class of Service
- Quality of Service
- VoIP Traffic Configuration
- Security Measures
- AAA (Authentication, Authorization and Accounting)
- Configuring User Accounts
- Web Authentication
- Network Access (MAC Address Authentication)
- Configuring HTTPS
- Configuring the Secure Shell
- Access Control Lists
- Filtering IP Addresses for Management Access
- Configuring Port Security
- Configuring 802.1X Port Authentication
- DoS Protection
- DHCP Snooping
- DHCPv6 Snooping
- ND Snooping
- IPv4 Source Guard
- IPv6 Source Guard
- ARP Inspection
- Application Filter
- Basic Administration Protocols
- Configuring Event Logging
- Link Layer Discovery Protocol
- Simple Network Management Protocol
- Configuring Global Settings for SNMP
- Setting Community Access Strings
- Setting the Local Engine ID
- Specifying a Remote Engine ID
- Setting SNMPv3 Views
- Configuring SNMPv3 Groups
- Configuring Local SNMPv3 Users
- Configuring Remote SNMPv3 Users
- Specifying Trap Managers
- Creating SNMP Notification Logs
- Showing SNMP Statistics
- Remote Monitoring
- Switch Clustering
- Setting a Time Range
- Ethernet Ring Protection Switching
- OAM Configuration
- UDLD Configuration
- LBD Configuration
- Multicast Filtering
- Overview
- Layer 2 IGMP (Snooping and Query for IPv4)
- Configuring IGMP Snooping and Query Parameters
- Specifying Static Interfaces for a Multicast Router
- Assigning Interfaces to Multicast Services
- Setting IGMP Snooping Status per Interface
- Filtering IGMP Packets on an Interface
- Displaying Multicast Groups Discovered by IGMP Snooping
- Displaying IGMP Snooping Statistics
- Filtering and Throttling IGMP Groups
- MLD Snooping (Snooping and Query for IPv6)
- Configuring MLD Snooping and Query Parameters
- Setting Immediate Leave Status for MLD Snooping per Interface
- Specifying Static Interfaces for an IPv6 Multicast Router
- Assigning Interfaces to IPv6 Multicast Services
- Filtering MLD Query Packets on an Interface
- Showing MLD Snooping Groups and Source List
- Displaying MLD Snooping Statistics
- Filtering and Throttling MLD Groups
- Multicast VLAN Registration for IPv4
- IP Tools
- IP Configuration
- General IP Routing
- IP Services
- Appendices
Chapter 12
| Security Measures
IPv6 Source Guard
– 380 –
IPv6 Source Guard is used to filter traffic on an insecure port which receives
messages from outside the network or fire wall, and therefore may be subject to
traffic attacks caused by a host trying to use the IPv6 address of a neighbor.
Command Usage
◆ Setting source guard mode to SIP (Source IP) enables this function on the
selected port. Use the SIP option to check the VLAN ID, IPv6 global unicast
source IP address, and port number against all entries in the binding table.
◆ After IPv6 source guard is enabled on an interface, the switch initially blocks all
IPv6 traffic received on that interface, except for ND packets allowed by ND
snooping and DHCPv6 packets allowed by DHCPv6 snooping. A port access
control list (ACL) is applied to the interface. Traffic is then filtered based upon
dynamic entries learned via ND snooping or DHCPv6 snooping, or static
addresses configured in the source guard binding table. The port allows only
IPv6 traffic with a matching entry in the binding table and denies all other IPv6
traffic.
◆ Table entries include a MAC address, IPv6 global unicast address, entry type
(Static-IPv6-SG-Binding, Dynamic-ND-Binding, Dynamic-DHCPv6-Binding),
VLAN identifier, and port identifier.
◆ Static addresses entered in the source guard binding table (using the Static
Binding page) are automatically configured with an infinite lease time.
Dynamic entries learned via DHCPv6 snooping are configured by the DHCPv6
server itself.
◆ If IPv6 source guard is enabled, an inbound packet’s source IPv6 address will be
checked against the binding table. If no matching entry is found, the packet
will be dropped.
◆ Filtering rules are implemented as follows:
■
If ND snooping and DHCPv6 snooping are disabled, IPv6 source guard will
check the VLAN ID, source IPv6 address, and port number. If a matching
entry is found in the binding table and the entry type is static IPv6 source
guard binding, the packet will be forwarded.
■
If ND snooping or DHCP snooping is enabled, IPv6 source guard will check
the VLAN ID, source IP address, and port number. If a matching entry is
found in the binding table and the entry type is static IPv6 source guard
binding, dynamic ND snooping binding, or dynamic DHCPv6 snooping
binding, the packet will be forwarded.
■
If IPv6 source guard is enabled on an interface for which IPv6 source
bindings (dynamically learned via ND snooping or DHCPv6 snooping, or
manually configured) are not yet configured, the switch will drop all IPv6
traffic on that port, except for ND packets and DHCPv6 packets allowed by
DHCPv6 snooping.
■
Only IPv6 global unicast addresses are accepted for static bindings.