Catchups Flashcards
Multipoint Generic Routing Encapsulation (mGRE)
- Connect multiple remote sites through VPN
- Uses hub and spoke topology
- Encapsulates data packets from different sources into a single tunnel
- Facilitates scalability
- Simplifies VPN management.
- Creating a point-to-multipoint link
Terminal Access Controller Access Control System (TACACS+)
*Developed by Cisco
*Ued to authenticate to admin accounts for network appliance management.
*Designed to be more flexible and reliable than RADIUS
*Also supported on many third-party and open-source RADIUS server implementations
Security Information and Event Management (SIEM)
*Real/neartime analysis of security alerts
*Aggregate logs from multiple sources
*Link individual events or data points into a meaningful indicator of risk, or indicator of compromise (IOC).
*Log retention
Dynamic ARP inspection (DAI)
*A security feature that rejects invalid and malicious ARP packets.
*Relies on DHCP snooping
*Drops ARP packet if the sender MAC address and sender IP address do not match an entry in the DHCP snooping bindings database
Unified threat management (UTM)
When multiple security features or services are combined into a single device within your network
System Log 0
Emergency
System is unusable
System Log 1
Alert
A fault requiring immediate remediation
System Log 2
Critical
A fault that will require immediate remediation is likely
System Log 3
Error
A nonurgent fault
System Log 5
Notice
A state that could potentially lead to an error condition
System Log 4
Warning
A nonurgent fault is likely
System Log 6
Informational
A normal but reportable event
System Log 7
Debug
Verbose status conditions used during development and testing
Trunks
Backbone link between switches/routers to transport frames for multiple VLANs
