RT-AC86U-E335
Asus RT-AC86U-E335 VPN Tunnel Error
Asus
VPN Tunnel Error
DSL
72% fix rate
Cause
IPSec ESP packet decryption failure
Fix Steps
- Verify VPN server address and port configuration
- Check VPN credentials are current and not expired
- Ensure correct VPN protocol is selected (IKEv2/IPSec recommended)
- Verify firewall rules allow VPN traffic on required ports
- Try switching between UDP and TCP protocols
- Update VPN client to latest version