Hello Dear,
If only one user is able to connect at a time, then it might be IP pool issue.
I am a Sonicwall and VPN expert and I have hands-on experience with OpenVPN, WireGuard, IPsec, L2TP, PPTP, SSL, etc.
I have Cisco CCNP certificate and have great experience in various network technologies such as VLAN, STP, OSPF, EIGRP, BGP, MPLS, OpenVPN, IPsec, L2TP, PPTP, SSL, etc.
Also, I have great hands-on experience in,
- Cisco Routers ASR 9k&1k, ISR 4K, 2900, 2800, 878, 888, Switches Nexus 9K, Cat 6500, 3850, 2900 and ASA 5505, 5506x, 5508.
- Juniper Routers (M7, M10, MX 480, MX 960) and SRX (300, 500).
- Palo Alto 200, 400, 1400, 550, 850 and 3400 and Fortigate 40F, 60F, 100E, 200E and 800E Firewalls.
- Huawei routers NE-40, NE5000E and Switches Quidway S2700 and S5300.
- HP Switches procurve 3500 and procurve 5900.
- Mikrotik CCR1036, CCR1009, CCR1700, CCR2204 and RB2011.
We can discuss it further, let me know if you are interested.
Regards,
Ahmed Fakkar