I have an issue where port 443 is setup on a Cisco ASA appliance for AnyConnect and WebVPN. 1. I get a timeout when trying to go there via browser or AnyConnect client. 2. If I change to a different public interface on the ASA on port 443, it works. 3. If I change from port 443 to a different port
Aug 24, 2012 How do I check if a port is in use on Linux? - nixCraft Apr 16, 2019 Using VPN over TCP 80, 443 and UDP 53,2049? - Information For example, if you connect on port 53/udp, a company will see a large number of (malformed) packets on "DNS", so that may cause a red flag. A network may also only allow only the use of their local DNS servers (which forward and cache DNS traffic). Your "best bet" may be 443/tcp, since many networks may just allow this encrypted, binary
If your browser returns “Unable to access network” it is likely that your computer, router or network is blocking port TCP/443. The next step requires a little bit of trouble shooting. Your https traffic can be blocked in various places (running software) or by various devices such as your router.
Oct 11, 2019
443: UDP: QUIC (from Chromium) for HTTPS: 非公式 444: TCP: UDP: Simple Network Paging Protocol (SNPP), RFC 1568: 公式 445: TCP: Microsoft-DS Active Directory, Windows shares: 公式 445: TCP: Microsoft-DS SMB file sharing: 公式 464: TCP: UDP: Kerberos Change/Set password: 公式 465: TCP: URL Rendezvous Directory for SSM (Cisco protocol) 公式 465: TCP
The VPN connections work absolutely fine with UDP 1194 but when I try to change to TCP 443 it just won't connect. Im using an apache2, which I turned off before testing with the command service apache2 stop. ufw tcp 443 is allowed but even if I turn the firewall off, it …