看到有这样一条log：

[14/Nov/2013:15:41:47 +0800] "GET /mypage.js HTTP/1.1" 200 2540
"http://219.123.58.100/" "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1;
Trident/5.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR
3.0.30729; Media Center PC 6.0; SLCC1;
staticlogin:product=cboxf09&act=login&info=ZmlsZW5hbWU9UG93ZXJ3b3JkMjAwOU94Z
i4yNTI2OS40MDExLmV4ZSZtYWM9NUZGQUIxNDA2MTIwNDIxRDgzMjA0QjY4NDU1QjI1NEQmcGFzc
3BvcnQ9JnZlcnNpb249MjAwOS4wNS4yNS4zLjI3MiZjcmFzaHR5cGU9MQ==&verify=af4c6107f
5ba97327c25f54c51d7eb5b;
staticlogin:product=cboxf2010&act=login&info=ZmlsZW5hbWU9UG93ZXJXb3JkMjAxME9
4Zl9TcGVjaWFsLmV4ZSZtYWM9ODVBREUxQzUyNTFDNDBBQkFDMEJFRTIyRDk2RTRCREQmcGFzc3B
vcnQ9JnZlcnNpb249MjAxMC42LjMuNS4yJmNyYXNodHlwZT0x&verify=4e6f0dc33cd172dfd90
5e4056c18331c;
staticlogin:product=cboxf2010&act=login&info=ZmlsZW5hbWU9UG93ZXJXb3JkMjAxME9
4Zl9VbHRpbWF0ZS5leGUmbWFjPTg1QURFMUM1MjUxQzQwQUJBQzBCRUUyMkQ5NkU0QkREJnBhc3N
wb3J0PSZ2ZXJzaW9uPTIwMTAuNi4zLjYuMiZjcmFzaHR5cGU9MQ==&verify=517cf5acccf680c
c5e461e453d1b8b23; .NET4.0C; .NET4.0E; SaaYaa)"



最后一大片都是 “USER_AGENT”，这是怎么回事？？ 这种agent是怎么了？说乱码吧
又像是有点规则的。
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FROM 202.113.68.*