为了测试关于我们的预约环境的开放图普格式,我们需要在我们的防火墙中留下一个漏洞,使Facebook能够拆卸我们的标页。 我们应该允许什么样的知识产权范围?
http://www.ohchr.org。
Facebook一直在展示一些爱情,现在正在使IP成为公众,让任何人都知道自己。
http://developers.facebook.com/docs/ApplicationSecurity/#facebook_scraper https://developers.facebook.com/docs/sharing/best-practices#crawl
<Facebook Scraper
A number of Platform services such as Social Plugins and the Open Graph require our systems to be able to reach your Web Pages. We recognize that there are situations where you might not want these pages on the public Internet, during testing or for other security reasons.
To facilitate this, you should make exceptions in your security systems to allow Facebook to scrape these pages by adding the following IP ranges, accurate as of April 2012.
31.13.24.0/21 31.13.64.0/18 66.220.144.0/20 69.63.176.0/20 69.171.224.0/19 74.119.76.0/22 103.4.96.0/22 173.252.64.0/18 204.15.20.0/22
Instead of IP, you can also use the user agent for your firewall.
http://developers.facebook.com/docs/vis/plugins/ similar/。
www.un.org/Depts/DGACM/index_spanish.htm 什么时候Facebook就报废了我的网页?
Facebook needs to scrape your page to know how to display it around the site.
Facebook scrapes your page every 24 hours to ensure the properties are up to date. The page is also scraped when an admin for the Open Graph page clicks the Like button and when the URL is entered into the Facebook URL Linter. Facebook observes cache headers on your URLs - it will look at "Expires" and "Cache-Control" in order of preference. However, even if you specify a longer time, Facebook will scrape your page every 24 hours.
The user agent of the scraper is: "facebookexternalhit/1.1 (+http://www.facebook.com/externalhit_uatext.php)"
whois -h whois.radb.net -i origin AS32934 , ^route to see all range.
66.220.144.0/20
66.220.144.01
69.63.176.0/20
69.63.176.01
69.63.176.0/24
69.63.184.01
69.171.224.0/19
204.15.20.0/22
31.13.24.01
Facebook now publishes their IP range.
截至2012年4月:
31.13.24.0/21
31.13.64.0/18
66.220.144.0/20
69.63.176.0/20
69.171.224.0/19
74.119.76.0/22
103.4.96.0/22
173.252.64.0/18
204.15.20.0/22
New information is listed on the following URL & yes, they do have this info public.
Run this command to get a current list of IP addresses the crawler uses.
whois -h whois.radb.net -- -i origin AS32934 | grep ^route
......
# For example only - over 100 in total
31.13.24.0/21
66.220.144.0/20
2401:db00::/32
2620:0:1c00::/40
2a03:2880::/32
So yeah, the ones mentioned by DMCS, stand correct. Just wanted to verify & found this info.
增 编
Facebook没有正式公布其拖网源地址范围,但你可以在公开的BGP航道表中查看其所有IP范围的清单:
我们现在重新使用这一清单:
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