What is dai in Cisco?
Dynamic ARP Inspection (DAI) is a security feature in MS switches that protects networks against man-in-the-middle ARP spoofing attacks. DAI inspects Address Resolution Protocol (ARP) packets on the LAN and uses the information in the DHCP snooping table on the switch to validate ARP packets.
What is IP ARP inspection validate?
Enables validation of the ARP packet destination MAC, ARP Packet IP, and source MAC addresses.
What is ARP spoofing Cisco?
An ARP spoofing attack can target hosts, switches, and routers connected to your Layer 2 network by poisoning the ARP caches of systems connected to the subnet and by intercepting traffic intended for other hosts on the subnet. This means that Host C intercepts that traffic.
What is true Dai?
DAI determines the validity of an ARP packet based on the valid MAC address-to-IP address bindings stored in the DHCP Snooping database. DAI forwards all ARP packets received on a trusted interface without any checks. DAI is used to prevent against a DHCP Snooping attack.
How do you implement Dai?
Configuration Steps
- Enable DHCP Snooping (if required)
- Enable DAI on the VLAN(s)
- Configure the DAI interface trust state.
- Applying ARP ACLs for DAI Filtering.
- Configure ARP Packet Rate Limiting.
- Enabling DAI error-disabled recovery.
- Configure additional validation.
- Configure DAI Logging.
What is DHCP snooping Cisco?
DHCP snooping is a security feature that acts like a firewall between untrusted hosts and trusted DHCP servers. The DHCP snooping feature performs the following activities: • Validates DHCP messages received from untrusted sources and filters out invalid messages.
What is Cisco IP source guard?
IP Source Guard (IPSG) is a security feature that restricts IP traffic on nonrouted, Layer 2 interfaces by filtering traffic based on the DHCP snooping binding database and on manually configured IP source bindings.
How do I configure Dai?
What is Dai configuration?
Dynamic ARP Inspection (DAI) is a security feature that protects ARP (Address Resolution Protocol) which is vulnerable to an attack like ARP poisoning. DAI checks all ARP packets on untrusted interfaces, it will compare the information in the ARP packet with the DHCP snooping database and/or an ARP access-list.
What is Cisco Catalyst 3750-X series?
The Cisco Catalyst 3750-X Series with StackWise ® Plus technology provides scalability, ease of management and investment protection for the evolving business needs. The Cisco Catalyst 3750-X and 3560-X enhance productivity by enabling applications such as IP telephony, wireless, and video for borderless network experience.
What are the primary features of the 3750-X and 3560-x series?
Cisco Catalyst 3750-X and 3560-X Series primary features: ● 24 and 48 10/100/1000 PoE+, non-PoE models, and 12 and 24 GE SFP port models ● 24 and 48 10/100/1000 UPOE-capable models with Energy Efficient Ethernet (EEE) support ● Four optional uplink network modules with GE or 10GE ports
What is the support period for the Catalyst 3750-X and 3560-x?
Cisco will provide during business hours, 8 hours per day, 5 days per week basic configuration, diagnosis, and troubleshooting of device-level problems for up to a 90-day period from the date of shipment of the originally purchased Cisco Catalyst 3750-X or 3560-X product.
What is the end of sale date for the 3750-X series switches?
Cisco Catalyst 3750-X Series Switches Product Type Campus LAN Switches – Access Status End of Sale EOL Details Series Release Date 15-MAR-2010 End-of-Sale Date 30-OCT-2016 Details End-of-Support Date 31-OCT-2021 Details