Failover example 1 (wifi client as primary and mobile as secondary)
Connect Radio Modem via Serial
VPN Example (L2TP Server and L2TP Cllient)
VPN Example (PPTP Server and PPTP Cllient)
VPN-Example-2(IPSEC-Server-and-IPSEC-Client)
VPN-Example-2(L2TP-Server-and-L2TP-Client)
VPN-Example-2(PPTP-Server-and-PPTP-Client)
VPN-Example-3(Other-PPTP-Server-and-E-Lins-PPTP-Client)
VPN-Example-3(Other-PPTP-Server-and-E-Lins-IPSec-Over-L2TP)
block all lan ports except port5900
Config Wired WAN without SIM Card
DIO(Digital Input Output) example 1
How to Update Firmware from uBoot
PC in LAN as server only TCP port 20000 is open block all other traffic