現在の状況は次のとおりです。
root@vmi1046457:~# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
9cfafc58933b maptiler/tileserver-gl "/usr/src/app/docker…" 2 hours ago Up 2
hours (healthy) 8080/tcp, 0.0.0.0:8080->80/tcp dazzling_colden
root@vmi1046457:~# sudo ufw allow 8080/tcp
Skipping adding existing rule
Skipping adding existing rule (v6)
root@vmi1046457:~# nc -l -p 8080
nc: Address already in use
root@vmi1046457:~#
root@vmi1046457:~# netstat -an|grep LIST
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN
tcp 0 0 127.0.0.53:53 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:8080 0.0.0.0:* LISTEN
tcp 0 0 127.0.0.1:5432 0.0.0.0:* LISTEN
tcp 0 0 127.0.0.1:42069 0.0.0.0:* LISTEN
tcp6 0 0 :::22 :::* LISTEN
tcp6 0 0 :::80 :::* LISTEN
unix 2 [ ACC ] STREAM LISTENING 722894 /run/user/0/systemd/private
unix 2 [ ACC ] STREAM LISTENING 722900 /run/user/0/bus
unix 2 [ ACC ] STREAM LISTENING 722902 /run/user/0/gnupg/S.dirmngr
unix 2 [ ACC ] STREAM LISTENING 722904 /run/user/0/gnupg/S.gpg-agent.browser
unix 2 [ ACC ] STREAM LISTENING 722906 /run/user/0/gnupg/S.gpg-agent.extra
unix 2 [ ACC ] STREAM LISTENING 21766 /var/run/docker/libnetwork/314b586c6194.sock
unix 2 [ ACC ] STREAM LISTENING 722908 /run/user/0/gnupg/S.gpg-agent.ssh
unix 2 [ ACC ] STREAM LISTENING 722910 /run/user/0/gnupg/S.gpg-agent
unix 2 [ ACC ] STREAM LISTENING 2392 /run/acpid.socket
unix 2 [ ACC ] STREAM LISTENING 2394 /run/dbus/system_bus_socket
unix 2 [ ACC ] STREAM LISTENING 2396 /run/docker.sock
unix 2 [ ACC ] STREAM LISTENING 2398 /run/uuidd/request
unix 2 [ ACC ] STREAM LISTENING 18003 /run/systemd/private
unix 2 [ ACC ] STREAM LISTENING 18005 /run/systemd/userdb/io.systemd.DynamicUser
unix 2 [ ACC ] STREAM LISTENING 18006 /run/systemd/io.system.ManagedOOM
unix 2 [ ACC ] STREAM LISTENING 18025 /run/systemd/journal/stdout
unix 2 [ ACC ] SEQPACKET LISTENING 18028 /run/udev/control
unix 2 [ ACC ] STREAM LISTENING 24635 /run/irqbalance/irqbalance509.sock
unix 2 [ ACC ] STREAM LISTENING 19343 /run/systemd/journal/io.systemd.journal
unix 2 [ ACC ] STREAM LISTENING 24666 /run/systemd/resolve/io.systemd.Resolve
unix 2 [ ACC ] STREAM LISTENING 4612 /run/containerd/containerd.sock.ttrpc
unix 2 [ ACC ] STREAM LISTENING 4614 /run/containerd/containerd.sock
unix 2 [ ACC ] STREAM LISTENING 18235 /var/run/docker/metrics.sock
unix 2 [ ACC ] STREAM LISTENING 2431 /var/run/postgresql/.s.PGSQL.5432
unix 2 [ ACC ] STREAM LISTENING 795125 /run/containerd/s/dcb7b80af05b61e4b240a5af6588e095dab23ace3a0f87274e50fb6289c889c7
root@vmi1046457:~# sudo nmap 194.x.x.x
Starting Nmap 7.80 ( https://nmap.org ) at 2022-11-23 11:08 CET
Nmap scan report for vmi1046457.contaboserver.net (194.60.201.224)
Host is up (0.000062s latency).
Not shown: 997 closed ports
PORT STATE SERVICE
22/tcp open ssh
80/tcp open http
8080/tcp filtered http-proxy
Nmap done: 1 IP address (1 host up) scanned in 3.41 seconds
root@vmi1046457:~# sudo ufw enable^C
root@vmi1046457:~#
root@vmi1046457:~#
root@vmi1046457:~#
root@vmi1046457:~# sudo netstat -plant | grep 8080
tcp 0 0 0.0.0.0:8080 0.0.0.0:* LISTEN 188808/docker-proxy
ブラウザのアドレスバーに次のように入力した場合：http://194.xxx/->私は丁度次を得ます:
Apache2 Default Page
配置されている場合：http://194.xxx:8080/->私は次を得る:
This site can’t be reached194.x.x.x refused to connect.
Try:
Checking the connection
Checking the proxy and the firewall
そして：
root@vmi1046457:~# curl 194.x.x.x
curl: (7) Failed to connect to 194.x.x.x port 8080 after 22 ms: Connection refused
接続するにはどうすればよいですか194.x.x.x:8080？