I needed a VPN that works in an environment where only TCP/80 and TCP/443 are open. WireGuard doesn't work over TCP. GloryTun is excellent, but requires post-configuration and the maintained branch uses UDP. I forgot about VTUN-libsodium. But it would have been too much complexity and attack surface for a simple use case.
Use case - client is sitting behind a firewall which allows TCP but not UDP: Client tries to connect to UDP and fails Client (transparently to use) tries TCP and succeeds Obviously the server would need to be appropriately set up - easy option would be to simply have two server instances running, one bound to TCP and the other to UDP Re: Allowing only port 80 for Remote VPN access Actually it does apply - very much. You need to write an acl to do what you want to do, and the config example shows you HOW to apply an acl to a remote vpn config. Think outside the box. Jun 10, 2020 · TCP VPN pros: TCP connections are usually allowed in restricted networks on common ports like 80, 443, while UDP traffic may be blocked, usually in corporate networks. Moreover, it is fairly common for ISPs to throttle UDP traffic; TCP VPN cons: usually, a TCP VPN connection is slower than UDP, so you should prefer UDP connections with a VPN Below is a list of some common VPN protocols and the ports that they use: PPTP (Point-to-Point Tunneling Protocol) – This protocol uses port 1723 TCP. L2TP (Layer Two Tunneling Protocol) – This protocol uses port 1701 TCP, Port 500 UDP, and port 4500 UDP.
Aug 13, 2019 · TCP is often used for obfuscating VPN traffic to look like regular HTTPS traffic. This can be done by using OpenVPN TCP on port 443, with the traffic routed in TLS encryption. Many VPN providers offer various forms of obfuscation to defeat VPN blocks, and most utilize OpenVPN TCP. What is the best VPN protocol?
Apr 12, 2018 · Port 80 is used for accessing http:// websites and since this refers to most sites, just like port 443, port 80 is unlikely to be blocked. HTTP stands for Hypertext Transfer Protocol and it is communication that is not encrypted. TCP ports 443, 110, and 80; For OpenVPN: UDP ports 1194, 1197, 1198, 8080, 9201 and 53 ; TCP ports 502, 501, 443, 110, and 80; L2TP uses: UDP ports 500, 1701, and 4500; IKEv2 uses: UDP ports 500; PPTP uses: TCP ports 1723 or Protocol 47 (GRE) If you can connect over any of those, you should be able to use at least one of our connection methods.
I'm aware that the use of TCP/80 to tunnel the traffic disables the option to mange the VPN concentrator, but this is only for the public interface. I still can manage the vpn concentrator through the private interface
Mar 13, 2020 · For example, Port 80 is for web traffic. Port 443 came later and handles SSL traffic, such as the secured version of HTTP called HTTPS. TCP and UDP Explained. TCP (Transmission Control Protocol) and UDP (User Datagram Protocol) are responsible for transporting data packets to the designated address. Bypass Firewalls – TCP VPN tunnels are rarely blocked since they run on common ports (80, 443). Usually TCP VPN tunnels can bypass even the most strict corporate firewalls. Slower Speed – TCP features higher encryption methods that tend to slow transfer rates a little. For higher transfer speeds with OpenVPN use UDP Many custom VPN clients allow you change the port they use. This is a good way to defeat port blocking. The two most popular choices of port to use are: TCP port 80 - this is the port uses by all “normal” unencrypted internet traffic. In other words, it is the port used by HTTP. Nov 29, 2019 · TCP header is 20 bytes and takes some time for the data to send and receive. Ports. Both of these protocols use ports. Your computer can run both the application on Port 80. For example: IP address + (TCP or UDP protocol ) + Port number. Usage. TCP is needed when there is high reliability required and timing of little to no concern: Oct 31, 2017 · See man # page for more info on learn-address script. ;learn-address ./script # If enabled, this directive will configure # all clients to redirect their default # network gateway through the VPN, causing # all IP traffic such as web browsing and # and DNS lookups to go through the VPN # (The OpenVPN server machine may need to NAT # or bridge This article is a comparison of virtual private network services.. In computer magazines, VPN services are typically judged on connection speeds; privacy protection, including privacy at signup and grade of encryption; server count and locations, interface usability, and cost.