Tech Library
ISIS – PDUs and Wireshark sample packets
Intermediate systems send and receive packets and relay (forward) packets. ISO packets are called ISIS Protocol Data Unit packets, or in short ISIS PDU. There are four PDU types and all share a common header. This common header has the same structure and information for all four PDU types, except the ‘PDU Type’ filed as […]
10 mins read
Protect RE – Common Network Protocols
Protect RE (Routing Engine) is a Juniper Networks security best practice that uses a stateless firewall filter on the loopback interface (lo0) to secure the control plane. It restricts management traffic (SSH, SNMP) to trusted sources and protects the CPU from malicious traffic or resource exhaustion (e.g., DoS attacks). Key Aspects of Protect RE on Juniper […]
7 mins read