Recently I configured OpenVPN via PiVPN on my Raspberry Pi Model 4B with newest Raspbian Buster (4.19.58-v7l+) to have an access to my home network from anywhere. Since beginning I have a very poor Downlink/Uplink badnwidth which can be measured in B/s. I'm unable to visit my favourite websites not to mention private cloud access or video streaming. Normally when I'm connected directly to my network I can get ~60Mbps D and ~30Mbps U. I'm using Huawei B618 4G LTE router and my IPS is Orange Polska S.A. Configuration is based on this tutorial so it's very basic. Here what it's looks like in /etc/openvpn/server.conf
dev tun proto udp port 6482 ca /etc/openvpn/easy-rsa/pki/ca.crt cert /etc/openvpn/easy-rsa/pki/issued/server_HlKPhGMmp1IxJs0k.crt key /etc/openvpn/easy-rsa/pki/private/server_HlKPhGMmp1IxJs0k.key dh /etc/openvpn/easy-rsa/pki/dh2048.pem topology subnet server 10.8.0.0 255.255.255.0 push "dhcp-option DNS 10.8.0.1" # Set your primary domain name server address for clients # Prevent DNS leaks on Windows push "block-outside-dns" # Override the Client default gateway by using 0.0.0.0/1 and # 126.96.36.199/1 rather than 0.0.0.0/0. This has the benefit of # overriding but not wiping out the original default gateway. push "redirect-gateway def1" client-to-client remote-cert-tls client tls-version-min 1.2 tls-auth /etc/openvpn/easy-rsa/pki/ta.key 0 cipher AES-256-CBC auth SHA256 user nobody group nogroup persist-key persist-tun crl-verify /etc/openvpn/crl.pem status /var/log/openvpn-status.log 20 status-version 3 syslog verb 3 #DuplicateCNs allow access control on a less-granular, per user basis. #Remove # if you will manage access by user instead of device. #duplicate-cn # Generated for use by PiVPN.io
For now I've tried setting up sndbuf and rcvbuf to various values and changing DNS server to 188.8.131.52 but without any results. As a DNS i'm using PiHole server also configured on my Raspberry.
Have you guys any idea what is configured wrong?
Thanks in advance, Mariusz