I faced similar issue with my office
Cisco VPN on the INOTECH
router LCO provided..
Let's test whether it's device issue or configuration..
Trail 1
1. Connect to LAN port
2. Try connecting VPN
Result: Pass/Fail
Trail 2
1. Connect via WiFi
2. Try connecting VPN
Result: Pass/Fail
If Trail 1 succeeded and Trail 2 failed
- Then possibly it's a buggy firmware of your router device (This was my case, I demonstrated it to them and told them to take their device back.. After loads of trouble and to n fro stuffs, which I'll skip here, they connected a
OptiLink device and it works well)
If both Trails fail
- Try changing MTU, link to guide
Determining and setting up the correct MTU size
www.linksys.com
That's all that I know when I came across this issue..
Also note.. LCO will never say that it's their device fault.. They keep saying, many are using the same device and no issues.. But that's not the truth..