Only first IP connected have acces to network

[artware]

Hello,
Maybe I do something wrong, but is strange.
I create one OpenVPN Server i do test with client connected 18Hours, but when I try to connect second client, he is connected but have no acces to network, no ping to lan network.
In status show conected and register traffic but client get no results.
If i restart OpenVPN service, first connected client get acces to network, rest nothing.
What can be?
I have last version, Concurrent connections set to 50, Inter-client communication allow, Duplicate Connection allow

[artware]

Certificate are different:
first certificate/config example:
<ca>
-----BEGIN CERTIFICATE-----
MIIEGDCCAwCgAwIBAgIBADANBgkqhkiG9w0BAQsFADBmMRQ

---

9Wy8fKU=
-----END CERTIFICATE-----
</ca>
<cert>
-----BEGIN CERTIFICATE-----
MIIEYDCCA0igAwIBAgIBDjANBgkqhkiG9w0BAQsFADBmMRQwE

---

+gsFKLpim9ASMyL0LurvJzKMd6Y=
-----END CERTIFICATE-----
</cert>
<key>
-----BEGIN PRIVATE KEY-----
MIIEvAIBADANBgkqhkiG9w0BAQEFAASCBKYwggSiAgEAAoIBAQ

---

Yaw+t/QKOvDrnXSuPAGpfg==
-----END PRIVATE KEY-----
</key>
key-direction 1
<tls-auth>

2048 bit OpenVPN static key

-----BEGIN OpenVPN Static key V1-----
48bfe7c65592025001a1e271e2b90ae7

---

3a0024bbd063aa84764a2f49af8b09f3
-----END OpenVPN Static key V1-----
</tls-auth>

second certificate/config:

<ca>
-----BEGIN CERTIFICATE-----
MIIEGDCCAwCgAwIBAgIBADANBgkqhkiG9w0BAQsFADBmMRQwEgYDVQQDEwtpbnRl

---

QMRXNTrZoal+i87Bti6GWPZgW95Dl7dGDwc6snGJns9J/3zi9wpH9Wy8fKU=
-----END CERTIFICATE-----
</ca>
<cert>
-----BEGIN CERTIFICATE-----
MIIEbzCCA1egAwIBAgIBDTANBgkqhkiG9w0BAQsFADBmMRQwEgYDVQQDEwtpbnRl

---

4YPVFi4paguoTRtLyeYIi87tDBwEB8qFYiOt49kQrOsk9sQ=
-----END CERTIFICATE-----
</cert>
<key>
-----BEGIN PRIVATE KEY-----
MIIEvgIBADANBgkqhkiG9w0BAQEFAASCBKgwggSkAgEAAoIBAQDfZl3VmoMOmJ12

---

Ly9EEWKEEMzjEgsgZC3H6RD3SpRZQR730J0UowEIIWikO+9UHVjAkx58xZRxre7Q
4UPgcNgIUxJQ5SsjGjGfErKm
-----END PRIVATE KEY-----
</key>
key-direction 1
<tls-auth>

2048 bit OpenVPN static key

-----BEGIN OpenVPN Static key V1-----
48bfe7c65592025001a1e271e2b90ae7

---

3a0024bbd063aa84764a2f49af8b09f3
-----END OpenVPN Static key V1-----
</tls-auth>

[Rico]

Share your OpenVPN settings and Firewall Rules (screenshots).

-Rico

[artware]

[artware]

Cannot be from Firewall, first user working ok.
From log:
NOTE: the current --script-security setting may allow this configuration to call user-defined scripts
WARNING: No server certificate verification method has been enabled. See http://openvpn.net/howto.html#mitm for more info.

Certificate are different, from where this problem?

[Gertjan]

@artware said in Only first IP connected have acces to network:

Certificate are different

In that case, you could switch to :

De-select Duplicate Connection.

Firewall rules ?