1. # syno-vpn-keepalive.sh
2. # ---
3. # Script to keep VPN alive on Synology DSM.
4. # Checks if IP is pingable and if not:
5. #  disconnect VPN, reconnect VPN & add routes
6. # ---
7. # Modify vars:
8. # - CHECKIP: IP to check to be pingable before reconnecting VPN
9. # - NAME (Synology VPN name),
10. # - ID (Synology VPN ID), SSH to NAS & run this to find ID
11. #    sudo grep conf_id /usr/syno/etc/synovpnclient/vpnc_last_connect
12. # - PROTO (pptp|l2tp|openvpn),
13. # - DEV
14. #     VPN network device -
15. #     check using ifconfig while VPN connected, *ppp200* for example)
16. # - ROUTE1,
17. #     Route to add after connecting VPN (network/prefix)
18. # - ROUTE2
19. #     Another route to add efter connecting VPN (network/prefix)
20. #
21. # To install, go to **Control Panel > Task Scheduler**
22. #
23. #   Hit **Create > Scheduled Task > User-defined Script**
24. #
25. #   ## General
26. #   - Task: **VPN keepalive**
27. #   - User: **root**
28. #  
29. #   ## Schedule
30. #   - Run on the following days: **Daily**
31. #   - First run: **00:00**,
32. #   - Frequency: **Every 5 min(s)**,
33. #   - last run time: **23:55**
34. #  
35. #   ## Task settings
36. #   - Run command - User defined script:
37. #     *paste this entire script's content*
38. # ---
39.  
40. CHECKIP='10.1.10.48'
41. NAME='Connexeon'
42. ID='p1489396766'
43. PROTO='pptp'
44. DEV='ppp200'
45. ROUTE1='10.0.0.0/12'
46. ROUTE2='10.111.0.0/24'
47.  
48. if ping -c 1 $CHECKIP &> /dev/null
49. then
50.   echo "VPN is running ($CHECKIP pingable)"
51.   synovpnc get_conn
52.   route
53. else
54.   echo "Reconnecting VPN ($CHECKIP unresponsive)"
55.  
56.   echo "Killing VPN ($NAME)"  
57.   synovpnc kill_client --name=$NAME
58.  
59.   echo "Reconnecting VPN ($NAME - $PROTO)"  
60.  
61.   echo conf_id=$ID > /usr/syno/etc/synovpnclient/vpnc_connecting
62.   echo conf_name=$NAME >> /usr/syno/etc/synovpnclient/vpnc_connecting
63.   echo proto=$PROTO >> /usr/syno/etc/synovpnclient/vpnc_connecting
64.   synovpnc reconnect --protocol=$PROTO --name=$NAME
65.  
66.   echo "Adding route ($ROUTE1 - $DEV)"  
67.   route add -net $ROUTE1 dev $DEV
68.  
69.   echo "Adding route ($ROUTE2 - $DEV)"  
70.   route add -net $ROUTE2 dev $DEV
71. fi
72. exit 0
73.  
74.