# GX400 VPN Keepalive issue

**URL:** <https://forum.sierrawireless.com/t/gx400-vpn-keepalive-issue/9126>\
**Category:** AirLink routers\
**Created:** [April 11, 2017, 1:44pm UTC](https://forum.sierrawireless.com/t/gx400-vpn-keepalive-issue/9126 "2017-04-11T13:44:07Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![MspenceSaskpower](https://avatars.discourse-cdn.com/v4/letter/m/df705f/32.png) [@MspenceSaskpower](https://forum.sierrawireless.com/u/MspenceSaskpower)\
**Post date:** [April 11, 2017, 1:44pm UTC](https://forum.sierrawireless.com/t/gx400-vpn-keepalive-issue/9126/1 "2017-04-11T13:44:07Z")

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Has anyone had an issue with Local LAN to Remote LAN communications on a GX400 VPN setup?

My VPN status will show connected but my remote LAN cannot access the Local LAN unless I ping the Remote LAN from the “Admin” page on the GX400.

Essentially I have to create Local LAN to Remote LAN traffic in order for the Remote LAN to then be able to access the Local LAN. This works but after some time I lose the traffic flow again(even though the VPN stays up) and have to manually go into the Gx400 and ping the Remote LAN to get traffic flowing again.

Thoughts or experiences?

Thanks!

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**Author:** ![jismail](https://avatars.discourse-cdn.com/v4/letter/j/53a042/32.png) [@jismail](https://forum.sierrawireless.com/u/jismail)\
**Post date:** [April 25, 2017, 9:56pm UTC](https://forum.sierrawireless.com/t/gx400-vpn-keepalive-issue/9126/2 "2017-04-25T21:56:35Z")

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Try this configuration:  
from the Wan/Cellular tab(at top) - Keep Alive -\>  
Keepalive IP Address  
The IP address that the AirLink gateway pings to determine if there is Internet connectivity and to  
make sure the IP address is accessible.  
Enter the IP address or fully qualified domain name for the AirLink gateway to ping to keep itself alive  
(online). Options are:  
• IP address  
• Domain name  
(page 70 of instruction guide)

Thanks,  
J.

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**Author:** ![rojas](https://avatars.discourse-cdn.com/v4/letter/r/c2a13f/32.png) [@rojas](https://forum.sierrawireless.com/u/rojas)\
**Post date:** [June 12, 2018, 8:25am UTC](https://forum.sierrawireless.com/t/gx400-vpn-keepalive-issue/9126/3 "2018-06-12T08:25:14Z")

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Maybe you can help me

> [@Gx400 - vpn pptp no ipsec](https://forum.sierrawireless.com/t/gx400-vpn-pptp-no-ipsec/12863):
>
> Can someone help me, my company has a server “VPN PPTP” I just bought a GX400, only IPSEC allows me? Basically, in the Gx400 description it indicates supporting PPTP VPN, but in practice I do not achieve connection. Thoughts or experiences? Thank you!