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此文的目的不在于教人入侵，而是为了提高自身的技术和加强网络管理员的安全防范意识。仅此而已！粗心大意的网络管理员应该明白：由于你们一个小小的操作失误可能会导致整个网络全面沦陷！本文主要是围绕LPD：网络打印服务的攻击而进行的。
首先确定目标，假设是：www.XXX.com
先让俺看看是不是连得上：
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C:\ping www.XXX.com
Pinging www.XXX.com[202.106.184.200] with 32 bytes of data:
Reply from 202.106.184.200: bytes=32 time=541ms TTL=244
Reply from 202.106.184.200: bytes=32 time=620ms TTL=244
Reply from 202.106.184.200: bytes=32 time=651ms TTL=244
Reply from 202.106.184.200: bytes=32 time=511ms TTL=244
Ping statistics for 202.106.184.200:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 511ms, Maximum = 651ms, Average = 580ms
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嘻嘻—不但连得上，速度还不错……
先telnet看看banner：
遗失对主机的连接。
再试试ftp,
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C:\>ftp www.XXX.com
Connected to www.fbi.gov.tw.
220 XXX-www FTP server (Version wu-2.6.1(1) Wed Aug 9 05:54:50 EDT 2000) ready.
User (www.XXX.com:(none)):
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wu-2.6.1看来有点眉目了。这台机器像是redhat7.0!首先必须确认一下，连上俺的跳板:
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C:\>telnet xxx.xxx.xxx.xxx
Red Hat Linux release 7.0 (Guinness)
Kernel 2.2.16-22smp on an i686
login: fetdog
Password:
bash-2.04$
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