掃描網站漏洞的方法：
可以使用Nikto開源Web服務器掃描程序來掃描網站的漏洞，比如掃描使用SSL的網站以pbs.org為例：
使用命令：“nikto -h pbs.org -ssl”來掃描，得到結果如下：
- Nikto v2.1.6
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- STATUS: Starting up!
+ Target IP: 54.225.198.196
+ Target Hostname: pbs.org
+ Traget Port: 443
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+ SSl Info: Subject: /CN=www.pbs.org
Altnames: account.pbs.org, admin.pgs.org, dipsy-tc.pbs.org, docs.pbs.org, ga.video.cdn.pbs.org, git.pbs.org, heart.ops.pbs.org, hub-dev.pbs.org, image.pbs.org,
jaws..pbs.org, kids.pbs.org, koth-qa.svp.pbs.org, login.pbs.org, ops.pbs.org, pbs.org, player.pbs.org, projects.pbs.org, sentry.pbs.org, teacherline.pbs.org,
urs.pbs.org, video.pbs.org, weta-qa.svp.pbs.org, whut-qa.svp.pbs.org, wnet.video-qa.pbs.org, wnet.video-staging.pbs.org, www-cache.pbs.org, www.pbs.org
Ciphers: ECDHE-RSA-AES128-GCM-SHA256
Issuer: /C-US/0=Let's Encrypt/CN=Let's Encrypt Authority X3
+ Start Time: 2018-12-05 23:34:06 (GMT-8)
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+ Server: nginx
+ The anti-clickjacking X-Frame-Options header is not present.
+ The X-XSS-Protection header is not defined. This header can hint to the user agent to protect against some forms of XSS
+ Uncommon header 'x-pbs-fwsrvname' found, with contents: fwcacheproxy1
+ The site uses SSL and the Strict-Transport-Security HTTP header is not defined.
+ The X-Content-Type-Options header is not set. This could allow the user agent to render the content of the site in a different fashion to the MIME type
+ Root page / redirects to: https://www.pbs.org/
+ No CGI Directories found (use '-C all' to force check all possible dirs)
+ RC-1918 IP address found in the 'x-pbs-appsvrip' header: The IP is "10.137.181.52".
+ Uncommon header 'x-cache-fs-status' found, with contents: EXPIRED
+ Uncommon header 'x-pbs-appsvrname' found, with contents: fwcacheproxy1
+ Uncommon header 'x-pbs-appsvrip' found, with contents: 10.137.181.52
+ Server leaks inodes via ETags, header found with file /pbs.org.zip, fields: 0x5b96537e 0x1678
+ 7446 requests: 0 error(s) and 10 item(s) reported on remote host
+ End Time: 2018-12-06 00:30:29 (GMT-8) (3383 seconds)
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+ 1 host(s) tested
