Connection to port 22 refused
102208
Why do I get "Permission denied (publickey)" when trying to SSH from local Ubuntu to a Amazon EC2 server?
30177
Set up BIND9 as DNS Firewall
30232
Ping IP returned "destination net unreachable", even with different network
55771
Linux iptables rejected - How do I enable it back?
48248
nginx: no permission to bind port 8090 but it binds to 80 and 8080
42673
How would I connect to a proxy on Ubuntu Studio?
127219
How to install TP link WN822N on Ubuntu?
126057
227 Entering Passive Mode (0,0,0,0,...) when connecting to vsftpd FTP server
112472
Can't access https despite port 443 is opened
7884
Why is the network configuration I set in /etc/network/interfaces ignored on Ubuntu 17.10?
107112
No connection could be made because the target machine actively refused it (PHP / WAMP)
97015
111: Connection Refused
73083
failed to connect to http://changelogs.ubuntu.com/meta-release
52726
Why does every server I try say it can't connect?
136053
Chrome Extension: Port error: Could not establish connection. Receiving end does not exist.
78261
Connecting to IP 0.0.0.0 succeeds. How? Why?
150312
when I use nio, serverSocket.accept() throws IllegalBlockingModeException