Three Types of Remote Access Software Explained
Three types of remote access solve different problems. Pick relay-based tools for one-offs, peer-to-peer for speed, or RMM platforms for fleet management.
Tag: Network security
Nginx as Linux Reverse Proxy: Setup and Alternatives
nginx leads for Linux reverse proxies with event-driven workers. Learn setup steps, when to choose HAProxy or Caddy, and security best practices.
Trace VPN Tunnels With eBPF at Both Network Layers
The guide shows how to monitor VPN tunnels with eBPF by correlating outer and inner traffic, sockets, processes, interfaces, and control-plane state.
XDP Firewall on OpenWRT: Early Packet Drop at Line Rate
XDP intercepts packets in the driver before the kernel allocates buffers, enabling high-volume DDoS mitigation and load balancing with minimal CPU cost.
Create eBPF IDS on Linux
I will walk you through a working eBPF IDS Linux setup that hooks kernel events, streams signals to user space, and keeps performance predictable. I start from how the verifier and JIT work in the linux kernel so you can pick the right attach points. I explain kprobes, tracepoints, uprobes, XDP, and LSM in plain […]
Detect Port Scans with eBPF
The eBPF port scanning detection approach shows how kernel-level programs can answer TCP SYNs without leaving the fast path. I guide you through a compact XDP example that reads Ethernet, IPv4, and TCP headers in the kernel. You will see how a simple program spots a SYN and replies with a SYN-ACK to emulate an […]
Block IP Addresses With eBPF: XDP Attach Syntax
Load and attach XDP programs to network interfaces using bpftool and ip link pinned syntax. Master the two-step process: pin first, then attach to eth0.