eBPF XDP Packet Filter Evaluator

Interactive eBPF XDP kernel network packet filtering & DDoS mitigation simulator. Test XDP_DROP vs XDP_PASS decisions at line-rate without kernel compilation.

[ SPECIFICATION // SECURITY ]: BPF maps and XDP_DROP vs XDP_PASS verdict simulator. Evaluates wire-speed packet filtering performance for multi-million pps workloads analytically in-browser.
Standard: eBPF XDP Driver-Level Packet Engine [ VERIFIED // LOCAL EXECUTION ][ ZERO TELEMETRY ][ OFFLINE PWA ][ OPEN SOURCE // MIT ]

[ 1. eBPF MAP & RULE CONFIGURATION ]

Mapped directly into an in-kernel eBPF LPM Trie (Longest Prefix Match) lookup table.

1,500,000 pps

Simulated packet rate arriving at NIC RX ring buffer.

[ 2. KERNEL DECISION & METRICS ]

XDP_DROP (Mitigated)
14 pkts
XDP_PASS (To TCP/IP)
6 pkts
CPU Stack Savings
98.2%
NIC Line Rate
14.8M pps
[ KERNEL XDP LOG STREAM ]

[ ARCHITECTURE ] eBPF XDP vs iptables Architecture

eBPF XDP (eXpress Data Path) executes BPF bytecode directly inside the network interface card (NIC) driver before socket buffer (`sk_buff`) memory allocation occurs. This enables line-rate packet drops without involving the Linux kernel TCP/IP stack.

Action Codes & Performance Characteristics

  • XDP_DROP: Drops packet immediately at driver layer. Consumes 0 CPU memory allocation in network stack.
  • XDP_PASS: Passes packet to standard Linux networking stack (`netif_receive_skb`).
  • XDP_TX: Bounces packet back out of the same interface (useful for hairpin load balancing).
[ KERNEL NETWORKING // eBPF ]

eBPF XDP Packet Filtering & Cilium Cloud-Native Security

Master kernel tracing architecture, XDP driver-level packet bypass, and runtime security enforcement with Cilium Tetragon.

eBPF XDP Packet Filtering Blueprint ->Cilium eBPF & Tetragon Security ->

Frequently Asked Questions (FAQ)

What is eBPF XDP (eXpress Data Path) in the Linux kernel?
XDP is a high-speed packet processing subsystem in Linux that executes eBPF bytecode directly at the network interface card (NIC) driver level before sk_buff allocation.
Why is XDP_DROP significantly faster than standard iptables or nftables?
XDP_DROP discards malicious packets immediately in the NIC driver ring buffer without triggering CPU interrupts or kernel network stack traversal, handling tens of millions of pps.
What is the function of BPF Maps in eBPF architecture?
BPF Maps are generic key/value data structures (hash tables, arrays, ring buffers) enabling kernel-space eBPF programs and user-space applications to share state safely in real time.
Is this eBPF simulator safe to execute in the browser?
Yes, this simulator is built with pure client-side JavaScript that models XDP verdict logic (XDP_PASS, XDP_DROP, XDP_TX) offline without requiring root access or a Linux kernel.
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