我以为我已经使用 ufw 允许连接到 http-alt (8080)。我这样想的理由是:
gerrit2@localhost:~$ sudo ufw status
Status: active
To Action From
-- ------ ----
22 ALLOW Anywhere
80/tcp ALLOW Anywhere
8080/tcp ALLOW Anywhere
22 (v6) ALLOW Anywhere (v6)
80/tcp (v6) ALLOW Anywhere (v6)
8080/tcp (v6) ALLOW Anywhere (v6)
和
Chain INPUT (policy DROP)
target prot opt source destination
ufw-before-logging-input all -- anywhere anywhere
ufw-before-input all -- anywhere anywhere
ufw-after-input all -- anywhere anywhere
ufw-after-logging-input all -- anywhere anywhere
ufw-reject-input all -- anywhere anywhere
ufw-track-input all -- anywhere anywhere
...
Chain ufw-before-input (1 references)
target prot opt source destination
ACCEPT all -- anywhere anywhere
ACCEPT all -- anywhere anywhere ctstate RELATED,ESTABLISHED
ufw-logging-deny all -- anywhere anywhere ctstate INVALID
DROP all -- anywhere anywhere ctstate INVALID
ACCEPT icmp -- anywhere anywhere icmp destination-unreachable
ACCEPT icmp -- anywhere anywhere icmp source-quench
ACCEPT icmp -- anywhere anywhere icmp time-exceeded
ACCEPT icmp -- anywhere anywhere icmp parameter-problem
ACCEPT icmp -- anywhere anywhere icmp echo-request
ACCEPT udp -- anywhere anywhere udp spt:bootps dpt:bootpc
ufw-not-local all -- anywhere anywhere
ACCEPT udp -- anywhere 224.0.0.251 udp dpt:mdns
ACCEPT udp -- anywhere 239.255.255.250 udp dpt:1900
ufw-user-input all -- anywhere anywhere
...
Chain ufw-user-input (1 references)
target prot opt source destination
ACCEPT tcp -- anywhere anywhere tcp dpt:ssh
ACCEPT udp -- anywhere anywhere udp dpt:ssh
ACCEPT tcp -- anywhere anywhere tcp dpt:http
ACCEPT tcp -- anywhere anywhere tcp dpt:http-alt
但是,当我使用 nmap 查看该端口是否打开时,我得到以下信息:
[mehoggan@localhost ~]$ nmap -p 8080 matthewh.me
Starting Nmap 6.45 ( http://nmap.org ) at 2014-07-07 20:00 PDT
Nmap scan report for matthewh.me (50.116.18.212)
Host is up (0.050s latency).
rDNS record for 50.116.18.212: li418-212.members.linode.com
PORT STATE SERVICE
8080/tcp closed http-proxy
我需要做什么才能使用 Ubuntu 14.04 ufw 向外界开放该端口?
答案1
您确实正确打开了防火墙。为了“打开”端口,您需要实际运行一个监听端口 8080 的服务。