VPN 問題

Firmware version: 4.4.14
由於PC1那邊沒有固網,就FLASH了TP-LINK TL-WR810N做OPENWRT. 另加Huawei E3372手指行mobile network.
已成功連接上網.

問題是我另一邊PC2想remote access (e.g. VNC or remote desktop) PC1.
就在OPENWRT試起了PPTP連到右方的VPN router. 但連接不成功. VPN ROUTER log如下.
我試過把OPENWRT內的firewall 關掉, PPTP是可以連接而且拎到remoteIP, 但開網頁是load空氣& PING 不到VPN ROUTER IP & PING 不到出街.

Jun  2 14:39:51 pptpd[25026]: CTRL: Starting call (launching pppd, opening GRE)
Jun  2 14:39:51 pptp[25029]: Plugin pptp.so loaded.
Jun  2 14:39:51 pptp[25029]: PPTP plugin version 0.8.5 compiled for pppd-2.4.7, linux-2.6.36.4
Jun  2 14:39:51 pptp[25029]: pppd 2.4.7 started by Lobo, uid 0
Jun  2 14:39:51 pptp[25029]: Using interface pptp0
Jun  2 14:39:51 pptp[25029]: Connect: pptp0 <--> pptp (124.217.189.XX)
Jun  2 14:40:02 pptpd[25026]: CTRL: Client pppd TERM sending
Jun  2 14:40:02 pptpd[25026]: CTRL: Client pppd finish wait
Jun  2 14:40:02 pptp[25029]: Terminating on signal 15
Jun  2 14:40:08 pptp[25029]: Connection terminated.
Jun  2 14:40:08 pptp[25029]: Modem hangup
Jun  2 14:40:08 pptp[25029]: Exit.
Jun  2 14:40:08 pptpd[25026]: CTRL: Client 124.217.189.XX control connection finished
Jun  2 15:00:00 hour_monitor: dpi engine doesn't exist

請教各位高手我是否有步驟做錯了? 還有沒有更好的VPN是適合以上環境?
感謝!!!

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