Port 53 udp is reserved for DNS traffic. Even though you may have gotten OpenVPN to work on this port you are seriously blocking the server's ability to resolve DNS queries. I would strongly advise you to use a different port, one that is not in use by other services on that machine before even attempting to fix the issues you're seeing.

after running sudo killall openvpn or service openvpn stop the virtual interface "tun0" would remain opened and referenced in route table, so actually related connections would be lost since openvpn service is killed.. the solution is to delete this virtual connection after killing openvpn service, as it is created everytime when openvpn service gets connected. networking - Something is listening on port 53 - Ask Ubuntu Port 53 is reserved for the Domain Name System (DNS). In your case it is the DNS cacher dnsmasq of the package dnsmasq-base.This pre-installed package is a dependency of network-manager, the network manager of your desktop environment (e.g. Unity, GNOME, …).. For this reason, don't uninstall the package dnsmasq-base and/or disable the service. Install bind9 and all is fine Why was 80 Chosen as the Default HTTP Port and 443 as the Nov 15, 2015 Using OpenVPN and VPNbook to create Virtual Private Create simple text file called password.txt and add the username and password shown on VPNBook website then save file in same directory. Open vpnbook-UDP53.ovpn file as text and add the word password.txt in front of auth-user-pass (auth-user-pass password.txt) then save and close.

Port 53 udp is reserved for DNS traffic. Even though you may have gotten OpenVPN to work on this port you are seriously blocking the server's ability to resolve DNS queries. I would strongly advise you to use a different port, one that is not in use by other services on that machine before even attempting to fix the issues you're seeing.

Jun 26, 2019 · VPNBook doesn't have any apps, so expect to spend some time manually setting up your devices. There are basic setup guides for Windows, Mac, iOS and Android, though, and you can connect up to five Listens for remote commands on port 53/tcp. Connects to an FTP server on port 21211/tcp. Scans for systems vulnerable to the exploit on port 1025/tcp. Kerio Personal Firewall (KPF) 2.1.4 has a default rule to accept incoming packets from DNS (UDP port 53), which allows remote attackers to bypass the firewall filters via packets with a source Mar 14, 2016 · VPNBook is a free VPN service provider that puts no limit on bandwidth. Moreover, VPNBook doesn’t need you to register or use some sort of proprietary application to use their VPN service and even has servers in different places like United States, United Kingdom, Canada, and Germany. Evaluating VPNBook’s performance required conducting a speed test. I performed them using the OpenVPN implementation with the TCP over port 443 profile and UDP over port 53. I used two tools for this process: Speedtest by Ookla and Telstra .

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Apr 12, 2018