SysAdmin

共 249 篇文章。

忘记更新证书了:(

• Security

想着想着还是给忘了,忘记了更新证书,以至于看到「根据您系统的当前时间,服务器提供的证书已过期」发愣了一阵。

也许应该写一个自动提醒程序?

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Upgraded MT to 3.2

• Blogging

Today I have followed the trend that upgraded Movable Type to 3.2. This is not as bumpy as what I have done for someone else, the entire process goes smoothly.

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一次postfix在线升级

• SysAdmin

没啥技术含量,做个笔记而已。

相关日志如下:

Jan 11 22:19:02 tarsier postfix/postfix-script: stopping the Postfix mail system
Jan 11 22:19:02 tarsier postfix/master[92875]: terminating on signal 15
Jan 11 22:19:02 tarsier postfix/postfix-script: starting the Postfix mail system
Jan 11 22:19:02 tarsier postfix/master[70250]: daemon started – version 2.2.8, configuration /usr/local/etc/postfix

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[全面披露] delphij.net所用的反垃圾策略

• Security

对于所有进入的连接:

  • 必须发送EHLO或HELO
  • 拒绝无效EHLO
  • 允许经过身份认证的用户绕过余下的测试
  • 禁止特定EHLO名字
  • 拒绝EHLO机器名非FQDN的情形
  • 拒绝不可解析的EHLO名字
  • 除上述禁止情况之外,进入下一流程。
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黑了自己管的一台服务器……

• Security

接前文……以为彻底安全之后,苦思冥想,终于想起可以拿某台机器通过NFS走后门,果然洞开……进入后,写了个suid的binary进去,拿到root了!

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freefall is now running 6.0-STABLE

• Kernel

After it has runned 4.x series for a too long time, finally kensmith@ has stepped up to upgrade it.

Needless to say what this means, just upgrade all your boxes to FreeBSD 6.x. FreeBSD 6.0-RELEASE is the best release we have released in the recent years, and the best .0 release ever, as proven by many installations and developers’ code review.

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