我获得了一台运行 Centos 7 的远程虚拟机,我必须在其上设置一个 Web 服务器。我可以通过 ssh 访问该机器,但无法 ping 通它,也无法访问我创建的测试网页(Apache 正在运行)。我做了一些检查:
虚拟机上的ifconfig:
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1400 inet 192.168.209.7 netmask 255.255.252.0 broadcast 192.168.211.255 inet6 fe80::f816:3eff:fe35:cdfb prefixlen 64 scopeid 0x20<link> ether fa:16:3e:35:cd:fb txqueuelen 1000 (Ethernet) RX packets 110329 bytes 454155776 (433.1 MiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 65991 bytes 7412428 (7.0 MiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
虚拟机上的iptables:
Chain INPUT (policy ACCEPT 85851 packets, 450M bytes) pkts bytes target prot opt in out source destination Chain FORWARD (policy ACCEPT 0 packets, 0 bytes) pkts bytes target prot opt in out source destination Chain OUTPUT (policy ACCEPT 46405 packets, 3382K bytes) pkts bytes target prot opt in out source destination
nmap -Pn -PS80 <remote ip>
在客户端机器上(运行 ubuntuStarting Nmap 7.60 ( https://nmap.org ) at 2018-01-28 11:20 CET Nmap scan report for <remote ip> Host is up (0.043s latency). Not shown: 999 filtered ports PORT STATE SERVICE 22/tcp open ssh Nmap done: 1 IP address (1 host up) scanned in 14.00 seconds
可能是什么问题呢?