Ironport X-Junk 标头

Ironport X-Junk 标头

我的学校使用 Ironport 来过滤/监控网络流量。我有点好奇为什么它会x-junk:在所有东西上都添加标题。经过几次 curl 测试后,我发现页面上显示的内容与标题之间没有真正的联系x-junk:

这是我的 curl 请求:有什么想法吗?

Anchorage:~ khotchkiss$ curl -I google.com
HTTP/1.1 301 Moved Permanently
Location: http://www.google.com/
Content-Type: text/html; charset=UTF-8
Date: Sun, 06 Feb 2011 04:37:25 GMT
Expires: Tue, 08 Mar 2011 04:37:25 GMT
Cache-Control: public, max-age=2592000
Server: gws
X-XSS-Protection: 1; mode=block
Content-Length: 219
Age: 108
Via: 1.1 MC-IRONPORT.UNIVERSITY.LIBERTY.EDU:80 (IronPort-WSA/6.3.3-015)
Connection: keep-alive
X-Junk: xxxxxxxxxxxxxxxxxxxxxxx

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