我已经在 RHEL6 上建立了一个 nodejs 站点。一切看起来都很好，但我无法在浏览器中查看我们的网站（在 Chrome、Safari 和 IE9 中都失败了）。我可以使用 curl 获得正确的 html 响应。这是使用不同工具的测试结果。有没有人遇到过同样的情况？
~]$ nmap -v -A 123.150.207.18 -p80
Starting Nmap 5.21 ( http://nmap.org ) at 2013-06-13 07:51 CST
NSE: Loaded 36 scripts for scanning.
Initiating Ping Scan at 07:51
Scanning 123.150.207.18 [2 ports]
Completed Ping Scan at 07:51, 0.00s elapsed (1 total hosts)
Initiating Parallel DNS resolution of 1 host. at 07:51
Completed Parallel DNS resolution of 1 host. at 07:51, 4.00s elapsed
Initiating Connect Scan at 07:51
Scanning 123.150.207.18 [1 port]
Discovered open port 80/tcp on 123.150.207.18
Completed Connect Scan at 07:51, 0.00s elapsed (1 total ports)
Initiating Service scan at 07:51
Scanning 1 service on 123.150.207.18
Completed Service scan at 07:51, 11.13s elapsed (1 service on 1 host)
NSE: Script scanning 123.150.207.18.
NSE: Starting runlevel 1 (of 1) scan.
Initiating NSE at 07:51
Completed NSE at 07:51, 0.03s elapsed
NSE: Script Scanning completed.
Nmap scan report for 123.150.207.18
Host is up (0.00057s latency).
PORT STATE SERVICE VERSION
80/tcp open http?
|_http-favicon: Unknown favicon MD5: 1D0E785BFCEDDE5326C2460E9F9B261D
1 service unrecognized despite returning data. If you know the service/version, please submit the following fingerprint at http://www.insecure.org/cgi-bin/servicefp-submit.cgi :
SF-Port80-TCP:V=5.21%I=7%D=6/13%Time=51B90999%P=x86_64-redhat-linux-gnu%r(
SF:GetRequest,233B,"HTTP/1\.1\x20200\x20OK\r\nX-Powered-By:\x20Express\r\n
SF:Content-Type:\x20text/html;\x20charset=utf-8\r\nContent-Length:\x208714
SF:\r\nETag:\x20\"891558458\"\r\nSet-Cookie:\x20connect\.sid=s%3AkL3pj-Tzt
SF:rF-hh7Mtjhc85Br\.Nfkgt%2FzHRJ%2FIFiIIqNqW0sSQ7%2F%2Brx%2FWldcrVkNrhQLA;
SF:\x20Path=/;\x20HttpOnly\r\nDate:\x20Wed,\x2012\x20Jun\x202013\x2023:51:
SF:53\x20GMT\r\nConnection:\x20close\r\n\r\n<!DOCTYPE\x20html>\n<html\x20l
SF:ang=\"en\">\n<head>\n\x20\x20\x20\x20<meta\x20charset=\"utf-8\">\n\x20\
SF:x20\x20\x20<meta\x20http-equiv=\"content-type\"\x20content=\"text/html;
SF:\x20charset=UTF-8\">\n\x20\x20\x20\x20<meta\x20name=\"viewport\"\x20con
SF:tent=\"width=device-width,\x20initial-scale=1\.0\">\n\x20\x20\x20\x20<m
SF:eta\x20name=\"description\"\x20content=\"\">\n\x20\x20\x20\x20<meta\x20
SF:name=\"author\"\x20content=\"\">\n\x20\x20\x20\x20<title>\xe7\x95\xaa\x
SF:e8\x8c\x84\xe5\xbf\xab\xe8\xb7\x91\x20--\x20\xe4\xb8\xad\xe5\x9b\xbd\xe
SF:6\x9c\x80\xe5\xb0\x8f\xe5\xb7\xa7\xe7\x9a\x84\xe6\x97\xb6\xe9\x97\xb4\x
SF:e7\xae\xa1\xe7\x90\x86\xe5\xb7\xa5\xe5\x85\xb7</title>\n\x20\x20\x20\x2
SF:0<link\x20rel=\"shortcut\x20icon\"\x20href=\"\./tomatodo/img/tomato_32\
SF:.png\">\n\x20\x20\x20\x20<link\x20rel=\"stylesheet\"\x20href=\"\./boots
SF:trap/css/bootstrap\.css\">\n\x20\x20\x20\x20<link\x20rel=\"stylesheet\"
SF:\x20href=\"\./bootstrap/css/bootstrap-responsive\.css\">\n\x20\x20\x20\
SF:x20<link\x20rel=\"styleshee")%r(HTTPOptions,109,"HTTP/1\.1\x20404\x20No
SF:t\x20Found\r\nX-Powered-By:\x20Express\r\nContent-Type:\x20text/plain\r
SF:\nSet-Cookie:\x20connect\.sid=s%3A_s6k4167c1xZ4bmi6GaUW0ld\.OcixsFK4HAI
SF:53dXqebPJ%2FNp0EPpGtDMPsFRvTFkLj8A;\x20Path=/;\x20HttpOnly\r\nDate:\x20
SF:Wed,\x2012\x20Jun\x202013\x2023:51:53\x20GMT\r\nConnection:\x20close\r\
SF:n\r\nCannot\x20OPTIONS\x20/")%r(FourOhFourRequest,12A,"HTTP/1\.1\x20404
SF:\x20Not\x20Found\r\nX-Powered-By:\x20Express\r\nContent-Type:\x20text/p
SF:lain\r\nSet-Cookie:\x20connect\.sid=s%3AiYSdu5oWddVC54Rergi65gAg\.TOE5n
SF:nutt90l1Xjv%2BG28sy%2BA230zvU9ccDqNTgQEQco;\x20Path=/;\x20HttpOnly\r\nD
SF:ate:\x20Wed,\x2012\x20Jun\x202013\x2023:51:53\x20GMT\r\nConnection:\x20
SF:close\r\n\r\nCannot\x20GET\x20/nice%20ports%2C/Tri%6Eity\.txt%2ebak");
Read data files from: /usr/share/nmap
Service detection performed. Please report any incorrect results at http://nmap.org/submit/ .
Nmap done: 1 IP address (1 host up) scanned in 15.36 seconds
~]$ sudo netstat -plunt
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 2183/sshd
tcp 0 0 127.0.0.1:631 0.0.0.0:* LISTEN 2073/cupsd
tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN 2259/master
tcp 0 0 0.0.0.0:56378 0.0.0.0:* LISTEN 1924/rpc.statd
tcp 0 0 0.0.0.0:27017 0.0.0.0:* LISTEN 20904/mongod
tcp 0 0 0.0.0.0:6379 0.0.0.0:* LISTEN 11590/redis-server
tcp 0 0 0.0.0.0:111 0.0.0.0:* LISTEN 1903/rpcbind
tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN 21220/node
tcp 0 0 0.0.0.0:28017 0.0.0.0:* LISTEN 20904/mongod
tcp 0 0 :::22 :::* LISTEN 2183/sshd
tcp 0 0 ::1:631 :::* LISTEN 2073/cupsd
tcp 0 0 ::1:25 :::* LISTEN 2259/master
tcp 0 0 :::40334 :::* LISTEN 1924/rpc.statd
tcp 0 0 :::111 :::* LISTEN 1903/rpcbind
udp 0 0 0.0.0.0:55512 0.0.0.0:* 1924/rpc.statd
udp 0 0 0.0.0.0:111 0.0.0.0:* 1903/rpcbind
udp 0 0 0.0.0.0:631 0.0.0.0:* 2073/cupsd
udp 0 0 0.0.0.0:806 0.0.0.0:* 1903/rpcbind
udp 0 0 0.0.0.0:828 0.0.0.0:* 1924/rpc.statd
udp 0 0 :::49640 :::* 1924/rpc.statd
udp 0 0 :::111 :::* 1903/rpcbind
udp 0 0 :::806 :::* 1903/rpcbind
~]$ sudo /sbin/service iptables 状态
Table: nat
Chain PREROUTING (policy ACCEPT)
num target prot opt source destination
Chain POSTROUTING (policy ACCEPT)
num target prot opt source destination
Chain OUTPUT (policy ACCEPT)
num target prot opt source destination
Table: filter
Chain INPUT (policy ACCEPT)
num target prot opt source destination
1 ACCEPT all -- 0.0.0.0/0 0.0.0.0/0 state RELATED,ESTABLISHED
2 ACCEPT icmp -- 0.0.0.0/0 0.0.0.0/0
3 ACCEPT all -- 0.0.0.0/0 0.0.0.0/0
4 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:22
5 REJECT all -- 0.0.0.0/0 0.0.0.0/0 reject-with icmp-host-prohibited
6 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 multiport ports 80,8080
7 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:80
Chain FORWARD (policy ACCEPT)
num target prot opt source destination
1 REJECT all -- 0.0.0.0/0 0.0.0.0/0 reject-with icmp-host-prohibited
Chain OUTPUT (policy ACCEPT)
num target prot opt source destination
~]$ 卷曲 123.150.207.18:80
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta name="description" content="">
<meta name="author" content="">
......