某大学研究生院FTP
ftp://210.32.0.115只有pub目录可进。
Connecting to 210.32.0.115 -> IP=210.32.0.115 PORT=21
Connected to 210.32.0.115
220 grs Microsoft FTP Service (Version 5.0).
USER anonymous
331 Anonymous access allowed, send identity (e-mail name) as password.
PASS (hidden)
230 Anonymous user logged in.
SYST
215 Windows_NT version 5.0
FEAT
500 'FEAT': command not understood
CWD /
250 CWD command successful.
PWD
257 \"/\" is current directory.
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