PACKET JOURNEY
SCORE 0 · LEASE 9:00
☎
READY
CONNECT TO THE INTERNET
THE HOME LAN IS WAITING
TAP OR [ A ] TO START
☎
DIALING ...
1 9 2 . 1 6 8 . 1 . 1
DEFAULT GATEWAY
☎
RINGING ...
WAITING FOR ANSWER
NEGOTIATING CARRIER
V.32 BIS / 33.6 KBPS
TRAINING SEQUENCE ...
CARRIER DETECTED
---
AS --- / ---
---, --
PUBLIC IP ---
---
TAP OR [ A ] TO BEGIN
FROM 192.168.1.42
TO 8.8.8.8
MAC A0:88:69:7C:21:B5 > ??
TTL
64
HOME LAN
YOUR HOUSE · 192.168.1.0/24
PROTOCOL KEY
ICMPquestions
TCPconversations
UDPbroadcasts
ARPnames
ARP CACHE (9:00 AGE)
DHCP 192.168.1.42
LEASE 6h 43m
ARP CACHE
EMPTY
NAT TRANSLATION
192.168.1.42:53421
↓
203.0.113.7:53421
AS 64501
HOP 203.0.113.129 TTL 63
ARROWS MOVE / SPACE ACTION / SHIFT INSPECT / M MUTE
PACKET HEADER
L2 SRC MACA0:88:69:7C:21:B5
L2 DST MAC?? ?? ?? ?? ?? ??
L3 SRC IP192.168.1.42
L3 DST IP8.8.8.8
L3 TTL64
HOLD SHIFT TO INSPECT
HOME LAN
A LIVING NETWORK
LEVEL LOCKED
FINISH NAT VISUALIZER FIRST
COMPLETE THE TOOL FIRST →
Playtest mode: sets the completion flag locally and reloads. Bypasses Learn-mode gates.
Press B or Esc to go back
DELIVERED
TO THE GATEWAY
YOUR PACKET CROSSED THE LAN.
SAME PACKET, NEW TERRAIN AHEAD.
NERD TIP: ARP CACHE ENTRIES TYPICALLY EXPIRE IN ABOUT FOUR MINUTES. THEN YOUR PACKET ASKS THE LAN AGAIN.
DEVICE
[ A ] ARP · [ B ] details
DISCOVERED · hold [ B ] for details
IP-
MAC-
OS-
PORTS-
SVC-
SIM NOT ACTUAL NMAP
[ I ] ADMIN
[ C ] CMD
HOME ROUTER - ADMIN CONSOLE
one box, five roles: Wi-Fi Radio + Access Point + L2 Switch + L3 Router + NAT + Firewall
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PORTMAC ADDRESSDEVICEAGE
-----------------------------
AGING TIMER 9:00 (unified with ARP cache) · SIM NOT ACTUAL CLI
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DESTINATIONNEXT-HOPIFACEMETRIC
0.0.0.0/0203.0.113.1eth-wan100
192.168.1.0/24(directly connected)br-lan0
127.0.0.0/8(loopback)lo0
-----------------------------
DEFAULT via WAN · SIM NOT ACTUAL CLI
-----------------------------
PROTOINSIDEOUTSIDESTATE
TCP192.168.1.42:52108203.0.113.7:52108ESTAB
UDP192.168.1.33:58340203.0.113.7:58340ASSURED
TCP192.168.1.41:44920203.0.113.7:44920TIME_WAIT
-----------------------------
PAT keeps many LAN hosts behind one public IP · L2 shows this in action
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CHAINMATCHACTIONHITS
INPUTstate ESTABLISHED,RELATEDACCEPT48.2k
INPUTiif br-lanACCEPT912
INPUTiif eth-wan state NEWDROP3
FORWARDbr-lan → eth-wanACCEPT51.3k
FORWARDeth-wan → br-lan NEWDROP17
-----------------------------
Stateful: LAN-initiated flows get return traffic; unsolicited WAN NEW is dropped
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PARAMVALUE  
SSIDMissionNet-5G  
BAND5 GHz (802.11ax / Wi-Fi 6)  
CHANNEL36 (80 MHz)  
SECURITYWPA3-Personal (SAE)  
OFDMAENABLEDuplink + downlink 
MU-MIMO4x4:4 (4 spatial streams)  
BEAMFORMINGtargeted (per-client)  
CLIENTS3 associatediphone, android, laptop 
-----------------------------
OFDMA schedules sub-carriers · MU-MIMO beams parallel streams · CSMA/CA still the fallback
TTL EXPIRED
PACKET DROPPED
Real packets get one TTL.
Yours hit 0.
⏏ EXIT