![用户代理“Mozilla/4.0 (compatible;)”是什么意思?](https://linux22.com/image/518453/%E7%94%A8%E6%88%B7%E4%BB%A3%E7%90%86%E2%80%9CMozilla%2F4.0%20(compatible%3B)%E2%80%9D%E6%98%AF%E4%BB%80%E4%B9%88%E6%84%8F%E6%80%9D%EF%BC%9F.png)
在我的服务器日志 (Apache 2.2.3) 中,我收到来自用户代理“Mozilla/4.0 (compatible;)”的请求。快速谷歌搜索似乎表明这些请求来自试图预取页面的代理,但信息不太确定。
有人有这方面的经验吗?你知道这些请求到底来自哪里吗?如果是 404 错误,忽略它们安全吗?
示例日志:
1.1.1.1 - - [10/Jun/2010:01:55:01 -0400] "GET /popup/authentication HTTP/1.1" 404 1831 "-" "Mozilla/4.0 (compatible;)"
2.2.2.2 - - [06/Jul/2010:08:50:27 -0400] "GET /images/social/twitter.1.png HTTP/1.1" 304 - "-" "Mozilla/4.0 (compatible;)"
3.3.3.3 - - [08/Jul/2010:14:58:41 -0400] "GET /calendar/list/json/6/27/2010 HTTP/1.1" 404 46 "-" "Mozilla/4.0 (compatible;)"
4.4.4.4 - - [11/Jun/2010:13:41:27 -0400] "GET / HTTP/1.1" 200 3875 "-" "Mozilla/4.0 (compatible;)"