對于web服務的開啟的判斷有以下幾種常用方法：

1、端口查看：

????本地：ss，netstat，lsof

示例一： ss：查看80端口是否處于監聽狀態 [root@gw?oldboy]#?ss?-an|grep?80 LISTEN?????0??????511??????????????????????:::80??????????????????????:::*????? 示例二： netstat：查看80端口/httpd服務是否開啟 [root@gw?oldboy]#?netstat?-lntup|grep?80 tcp????????0??????0?:::80???????????????????????:::*????????????????LISTEN??????2317/httpd [root@gw?oldboy]#?netstat?-lntup|grep?httpd tcp????????0??????0?:::80???????????????????????:::*????????????????LISTEN??????2317/httpd 示例三： lsof：查看80端口是否處于 [root@gw?oldboy]#?lsof?-i?:80 COMMAND??PID???USER???FD???TYPE?DEVICE?SIZE/OFF?NODE?NAME httpd???2317???root????4u??IPv6??13199??????0t0??TCP?*:http?(LISTEN) httpd???2320?apache????4u??IPv6??13199??????0t0??TCP?*:http?(LISTEN) httpd???2321?apache????4u??IPv6??13199??????0t0??TCP?*:http?(LISTEN) httpd???2322?apache????4u??IPv6??13199??????0t0??TCP?*:http?(LISTEN) httpd???2323?apache????4u??IPv6??13199??????0t0??TCP?*:http?(LISTEN) httpd???2324?apache????4u??IPv6??13199??????0t0??TCP?*:http?(LISTEN) httpd???2325?apache????4u??IPv6??13199??????0t0??TCP?*:http?(LISTEN) httpd???2326?apache????4u??IPv6??13199??????0t0??TCP?*:http?(LISTEN) httpd???2327?apache????4u??IPv6??13199??????0t0??TCP?*:http?(LISTEN)

????遠程：nmap

示例一： nmap：檢測端口開啟狀態 [root@niaoyun?~]#?nmap?192.168.1.21?-p?80Starting?Nmap?5.51?(?http://nmap.org?)?at?2015-08-30?21:59?CST Nmap?scan?report?for?192.168.1.21 Host?is?up?(0.00013s?latency). PORT???STATE??SERVICE 80/tcp?closed?http?????<==?注意這里 MAC?Address:?00:0C:29:19:FC:7D?(VMware)Nmap?done:?1?IP?address?(1?host?up)?scanned?in?0.10?seconds

2、本地進程數：

[root@niaoyun?~]#?ps?-ef|grep?httpd root???????1249??????1??0?22:05??????????00:00:00?/usr/sbin/httpd apache?????1251???1249??0?22:05??????????00:00:00?/usr/sbin/httpd apache?????1252???1249??0?22:05??????????00:00:00?/usr/sbin/httpd apache?????1253???1249??0?22:05??????????00:00:00?/usr/sbin/httpd apache?????1254???1249??0?22:05??????????00:00:00?/usr/sbin/httpd apache?????1255???1249??0?22:05??????????00:00:00?/usr/sbin/httpd apache?????1256???1249??0?22:05??????????00:00:00?/usr/sbin/httpd apache?????1257???1249??0?22:05??????????00:00:00?/usr/sbin/httpd apache?????1258???1249??0?22:05??????????00:00:00?/usr/sbin/httpd root???????1260???1117??0?22:05?pts/0????00:00:00?grep?httpd [root@niaoyun?~]#?ps?-ef|grep?httpd|wc?-l 10

3、header狀態值：

[root@niaoyun?~]#?curl?-I?192.168.1.20 HTTP/1.1?200?OK Date:?Sun,?30?Aug?2015?14:16:55?GMT Server:?Apache/2.2.15?(CentOS) Last-Modified:?Sun,?30?Aug?2015?14:16:23?GMT ETag:?"5fda3-13-51e87f62ea815" Accept-Ranges:?bytes Content-Length:?19 Connection:?close Content-Type:?text/html;?charset=UTF-8 [root@niaoyun?~]#?curl?-I?-s?192.168.1.20|head?-1 HTTP/1.1?200?OK

4、URL（wget，curl）模擬用戶的方式：

示例一： wget：爬蟲測試 [root@niaoyun?~]#?wget?--spider?--timeout=10?192.168.1.20 Spider?mode?enabled.?Check?if?remote?file?exists. --2015-08-30?22:23:34--??http://192.168.1.20/ Connecting?to?192.168.1.20:80...?connected. HTTP?request?sent,?awaiting?response...?200?OK Length:?19?[text/html] Remote?file?exists?and?could?contain?further?links, but?recursion?is?disabled?--?not?retrieving.

轉載于:https://blog.51cto.com/maocong/1689980

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