UDP is generally faster than TCP because it doesn't require the "handshake" overhead, making it ideal for browsing and streaming. Potential Drawbacks
Because Port 53 is a "trick" to bypass firewalls, speeds may be slower than standard VPN ports if the network performs Deep Packet Inspection (DPI). vpnbook com openvpn udp 53 zip
Port 53 is traditionally reserved for DNS (Domain Name System) traffic. Many public networks, such as those in schools, universities, or workplaces, restrict internet access by blocking standard VPN ports. However, because DNS is essential for browsing the web, port 53 is rarely blocked. By encapsulating VPN data within UDP port 53, users can often bypass these firewall restrictions and access the open internet. Overview — vpnbook