环境：
HP DL360 G5
RHEL3.4.5-2
Sun JES Proxy Server Version: 4.0.3 B05/21/2006 22:49
故障现象：
bjproxy所有用户无法使用socks代理，均提示：
[03/Feb/2007:13:55:41] 000 debug: new socket accepted[1]
[03/Feb/2007:13:55:41] 002 debug: request from 192.168.221.117:4885
[03/Feb/2007:13:55:41] 002 warning: socks4 request from 192.168.221.117:4885 can’t authenticate
[03/Feb/2007:13:55:41] 000 debug: new socket accepted[1]
[03/Feb/2007:13:55:41] 003 debug: request from 192.168.221.117:4886
[03/Feb/2007:13:55:41] 003 debug: auth: userpass
[03/Feb/2007:13:55:41] 003 debug: authentication type 2 successful for testmail
[03/Feb/2007:13:55:41] 003 debug: request 1 to 65.54.239.140:1863
[03/Feb/2007:13:55:41] 003 request: testmail 5 connect: denied 192.168.221.117:4886 -> 65.54.239.140:1863
[03/Feb/2007:13:55:41] 003 FATAL: Error : 2 [2364487233:1863]
[03/Feb/2007:13:55:41] 002 debug: request from 192.168.221.117:4885
[03/Feb/2007:13:55:41] 002 warning: socks4 request from 192.168.221.117:4885 can’t authenticate
[03/Feb/2007:13:55:41] 000 debug: new socket accepted[1]
[03/Feb/2007:13:55:41] 003 debug: request from 192.168.221.117:4886
[03/Feb/2007:13:55:41] 003 debug: auth: userpass
[03/Feb/2007:13:55:41] 003 debug: authentication type 2 successful for testmail
[03/Feb/2007:13:55:41] 003 debug: request 1 to 65.54.239.140:1863
[03/Feb/2007:13:55:41] 003 request: testmail 5 connect: denied 192.168.221.117:4886 -> 65.54.239.140:1863
[03/Feb/2007:13:55:41] 003 FATAL: Error : 2 [2364487233:1863]
分析：
手册和帮助文件写的很不好，基本上没有有用的信息。分析以往日志发现：错误代码与用户不在允许的地址范围内时出现的错误代码相同。
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