# 3.11.3.1.3 ![image](https://hackmd.io/_uploads/SkowOxHKp.png) Lan PC ping 98網段的PC FTP要看的封包 Filter:tcp.port==21 WAN: ![image](https://hackmd.io/_uploads/BkJ6ueBF6.png) LAN: ![image](https://hackmd.io/_uploads/BkhR_xBta.png)