TCP error code 10061: No connection could be made because the target machine actively refused it 127.0.0.1:2660. - Tridion developer articles and tutorials - Tridion Sites - RWS Community
451 4.4 0 primary target ip address responded with 421 4.4 2 connection dropped due to socket error - Microsoft Q&A
Secure Remote Connection
Mail loop between Hybrid and legacy server. 421 4.2.1 Unable to connect or 451 4.4.397 Error communicating with target host or 451 4.7.0 Temporary server error – Modern 365
TCP error code 10061: No connection could be made because the target machine actively refused it 127.0.0.1:2660. - Tridion developer articles and tutorials - Tridion Sites - RWS Community
Octopi refuses connection - Networking - OctoPrint Community Forum
Can't access anything on the 10.43.x.x range · Issue #1247 · k3s-io/k3s · GitHub
Guardium LDAP configuration test fails - SSLHandshakeException: Remote host closed connection during handshake