Difference between revisions of "Netband Project - Dynamic Arp Inspection"
From Teknologisk videncenter
| Line 5: | Line 5: | ||
*Dynamic ARP inspection is supported on access ports, trunk ports, EtherChannel ports, and private VLAN ports. | *Dynamic ARP inspection is supported on access ports, trunk ports, EtherChannel ports, and private VLAN ports. | ||
| + | ==Configuration== | ||
| + | <pre> | ||
| + | ip arp inspection vlan 3,5 | ||
| + | </pre> | ||
| + | |||
| + | ==Verification== | ||
<pre> | <pre> | ||
| − | ip arp inspection | + | HQSW1#sh ip arp inspection |
| + | |||
| + | Source Mac Validation : Disabled | ||
| + | Destination Mac Validation : Disabled | ||
| + | IP Address Validation : Disabled | ||
| + | |||
| + | Vlan Configuration Operation ACL Match Static ACL | ||
| + | ---- ------------- --------- --------- ---------- | ||
| + | 3 Enabled Active | ||
| + | 5 Enabled Active | ||
| + | |||
| + | Vlan ACL Logging DHCP Logging | ||
| + | ---- ----------- ------------ | ||
| + | 3 Deny Deny | ||
| + | 5 Deny Deny | ||
| + | |||
| + | Vlan Forwarded Dropped DHCP Drops ACL Drops | ||
| + | ---- --------- ------- ---------- --------- | ||
| + | 3 123 197 197 0 | ||
| + | 5 15 0 0 0 | ||
| + | |||
| + | Vlan DHCP Permits ACL Permits Source MAC Failures | ||
| + | ---- ------------ ----------- ------------------- | ||
| + | 3 123 0 0 | ||
| + | 5 15 0 0 | ||
| + | |||
| + | Vlan Dest MAC Failures IP Validation Failures Invalid Protocol Data | ||
| + | ---- ----------------- ---------------------- --------------------- | ||
| + | 3 0 0 0 | ||
| + | 5 0 0 0 | ||
</pre> | </pre> | ||
Revision as of 14:55, 14 April 2009
<accesscontrol>NetBand</accesscontrol> This page is part of the Netband Project
- Dynamic ARP inspection is a security feature that validates ARP packets in a network. It intercepts, logs, and discards ARP packets with invalid IP-to-MAC address bindings using the DHCP snooping table. This capability protects the network from certain man-in-the-middle attacks.
- Dynamic ARP inspection is supported on access ports, trunk ports, EtherChannel ports, and private VLAN ports.
Configuration
ip arp inspection vlan 3,5
Verification
HQSW1#sh ip arp inspection
Source Mac Validation : Disabled
Destination Mac Validation : Disabled
IP Address Validation : Disabled
Vlan Configuration Operation ACL Match Static ACL
---- ------------- --------- --------- ----------
3 Enabled Active
5 Enabled Active
Vlan ACL Logging DHCP Logging
---- ----------- ------------
3 Deny Deny
5 Deny Deny
Vlan Forwarded Dropped DHCP Drops ACL Drops
---- --------- ------- ---------- ---------
3 123 197 197 0
5 15 0 0 0
Vlan DHCP Permits ACL Permits Source MAC Failures
---- ------------ ----------- -------------------
3 123 0 0
5 15 0 0
Vlan Dest MAC Failures IP Validation Failures Invalid Protocol Data
---- ----------------- ---------------------- ---------------------
3 0 0 0
5 0 0 0