Pause
Stage 1
Stage 2
Stage 3
Reset
STAGE 1: INBOUND
STAGE 2: RULE ENGINE
STAGE 3: RESPONSE
packet
config
INBOUND PROBE
TTL: 64
SRC: 10.0.0.1
MODE: TUN/INLINE
match(probe, rules)
LITERAL VALUE
$SRC SUBSTITUTION
RANDOMIZED FIELD
build_reply()
build_rfc4950()
SYNTHETIC RESPONSE
TYPE: ICMP TIME EXCEEDED
+ ORIGINAL PROBE HEADER