vsftpd \u662f\u4e00\u4e2a UNIX \u7c7b\u64cd\u4f5c\u7cfb\u7edf\u4e0a\u8fd0\u884c\u7684\u670d\u52a1\u5668\u7684\u540d\u5b57\uff0c\u5b83\u53ef\u4ee5\u8fd0\u884c\u5728\u8bf8\u5982 Linux, BSD, Solaris, HP-UX \u4ee5\u53ca IRIX \u4e0a\u9762\u3002
\u672c\u6587\u662fvsftpd 2.0.3\u5b98\u65b9faq\u7684\u975e\u5b98\u65b9\u7ffb\u8bd1\u7248\u672c\u3002\u5b98\u65b9faq\u5730\u5740\uff1aftp:\/\/vsftpd.beasts.org\/users\/cevans\/untar\/vsftpd-2.0.3\/FAQ
\u73b0\u5728\u6700\u65b0\u7684\u7248\u672c\u662fvsftpd 2.3.2\uff0c\u5bf9\u5e94\u7684faq\u5730\u5740\uff1aftp:\/\/vsftpd.beasts.org\/users\/cevans\/untar\/vsftpd-2.3.2\/FAQ<\/p>\n
Q1) \u6211\u80fd\u628a\u7528\u6237\u9650\u5236\u5728\u4ed6\u7684\u5bb6(home)\u76ee\u5f55\u91cc\u5417\uff1f<\/p>\n
A) \u80fd\uff0c\u8bbe\u7f6echroot_local_user=YES\u5c31\u884c\u4e86\u3002<\/p>\n
Q2) \u4e3a\u4ec0\u4e48\u8bbe\u7f6e\u4e86chroot_local_user=YES\u540e\uff0c\u7b26\u53f7\u94fe\u63a5(symlink)\u5c31\u4e0d\u8d77\u4f5c\u7528\u4e86\u5462\uff1f<\/p>\n
A) \u8fd9\u662fchroot()\u8fd9\u79cd\u5b89\u5168\u673a\u5236\u5982\u4f55\u5de5\u4f5c\u7684\u7ed3\u679c\u3002\u53ef\u9009\u5730\uff0c\u770b\u4e00\u4e0b\u786c\u8fde\u63a5(hard links)\uff0c\u6216\u8005\uff0c\u4f60\u7528\u7684\u662f\u201c\u73b0\u4ee3\u7684\u201dLinux\uff0c\u770b\u4e00\u4e0b\u5f3a\u5927\u7684”mount –bind”\u547d\u4ee4\u3002<\/p>\n
Q3) vsftpd\u652f\u6301\u9650\u5236\u7528\u6237\u8fde\u63a5\u6570\u5417\uff1f<\/p>\n
A1) \u662f\u7684\uff0c\u95f4\u63a5\u5730\u3002vsftpd\u662f\u4e00\u4e2a\u57fa\u4e8einetd\u7684\u670d\u52a1\u3002\u5982\u679c\u4f60\u4f7f\u7528\u6d41\u884c\u7684xinetd\uff0c\u5b83\u4f1a\u652f\u6301per-service per-IP\u7684\u8fde\u63a5\u9650\u5236\u3002”EXAMPLE”\u76ee\u5f55\u91cc\u6709\u8fd9\u6837\u7684\u4e00\u4e2a\u4f8b\u5b50\u3002<\/p>\n
A2) \u5982\u679c\u4f60\u4ee5”standalone”\u65b9\u5f0f\u8fd0\u884cvsftpd(\u65b9\u6cd5\u662f\u8bbe\u7f6elisten=YES)\uff0c\u4f60\u53ef\u4ee5\u7814\u7a76\u4e00\u4e0bmax_clients=10\u8fd9\u6837\u7684\u8bbe\u7f6e\u3002<\/p>\n
Q4) \u6c42\u52a9\uff01\u6211\u5f97\u5230\u4e86”refusing to run with writable anonymous root”\u9519\u8bef\u4fe1\u606f\u3002<\/p>\n
A) vsftpd\u662f\u4e0d\u5141\u8bb8\u201c\u5371\u9669(\u4e0d\u5b89\u5168)\u201d\u7684\u914d\u7f6e\u7684\u3002\u51fa\u73b0\u8fd9\u4e2a\u9519\u8bef\u4fe1\u606f\u7684\u539f\u56e0\u901a\u5e38\u662fftp\u7684\u5bb6(home)\u76ee\u5f55\u7684\u5c5e\u4e3b\u6743\u9650\u4e0d\u6b63\u786e\u3002 \u5bb6(home)\u76ee\u5f55\u7684\u5c5e\u4e3b\u4e0d\u5e94\u8be5\u662fftp\u7528\u6237\u81ea\u5df1\uff0c\u800c\u4e14ftp\u7528\u6237\u4e5f\u4e0d\u80fd\u6709\u5199\u7684\u6743\u9650\u3002\u89e3\u51b3\u7684\u65b9\u6cd5\u662f:<\/p>\n
chown root ~ftp; chmod -w ~ftp<\/p>\n
Q5) \u6c42\u52a9\uff01\u6211\u5f97\u5230\u4e86”str_getpwnam”\u9519\u8bef\u4fe1\u606f\u3002<\/p>\n
A) \u6700\u6709\u53ef\u80fd\u7684\u539f\u56e0\u662f\u5728\u4f60\u7684\u7cfb\u7edf\u4e2d\u4e0d\u5b58\u5728\u90a3\u4e2a\u88ab\u914d\u7f6e\u6210'nopriv_user'\u7684\u7528\u6237(\u4e00\u822c\u662f 'nobody') \u3002vsftpd\u9700\u8981\u901a\u8fc7\u5b83\u4ee5\u6700\u4f4e\u7684\u6743\u9650\u8fd0\u884c\u3002<\/p>\n
Q6) \u6c42\u52a9\uff01\u672c\u5730\u7528\u6237\u65e0\u6cd5\u767b\u5f55\u3002<\/p>\n
A) \u6709\u51e0\u79cd\u53ef\u80fd\u7684\u95ee\u9898\u5bfc\u81f4\u65e0\u6cd5\u767b\u5f55\u3002<\/p>\n
A1) \u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0cvsftpd\u53ea\u5141\u8bb8\u533f\u540d\u7528\u6237(anonymous)\u767b\u5f55\u3002\u5728\u4f60\u7684\/etc\/vsftpd.conf\u914d\u7f6e\u6587\u4ef6\u4e2d\u52a0\u5165local_enable=YES\u5c31\u53ef\u4ee5\u8ba9\u672c\u5730\u7528\u6237\u767b\u5f55\u4e86\u3002<\/p>\n
A2) vsftpd\u9700\u8981\u4e0ePAM\u8054\u7cfb (\u8fd0\u884c”ldd vsftpd”\u68c0\u67e5\u7ed3\u679c\u4e2d\u6709\u6ca1\u6709libpam\u53ef\u4ee5\u786e\u5b9a\u8fd9\u4e2a). \u5982\u679cvsftpd\u9700\u8981PAM\u652f\u6301, \u4f60\u5fc5\u987b\u4e3avsftpd\u670d\u52a1\u51c6\u5907\u4e00\u4e2aPAM\u6587\u4ef6. \u5728”RedHat”\u76ee\u5f55\u4e0b\u6709\u4e00\u4e2a\u4e3aRedHat\u7cfb\u7edf\u51c6\u5907\u7684PAM\u6587\u4ef6\u7684\u4f8b\u5b50\uff0c\u628a\u5b83\u653e\u5728\/etc\/pam.d\u76ee\u5f55\u4e0b\u3002<\/p>\n
A3) \u5982\u679cvsftpd\u4e0d\u9700\u8981PAM, \u90a3\u4e48\u4f1a\u6709\u591a\u79cd\u539f\u56e0\u5bfc\u81f4\u8fd9\u79cd\u60c5\u51b5. \u7528\u6237\u7684shell\u5728 \/etc\/shells\u6587\u4ef6\u4e2d\u5417? \u5982\u679c\u4f60\u4f7f\u7528shadow passwd\uff0c\u90a3\u4e48include\u8def\u5f84\u4e2d\u6709\u6ca1\u6709shadow.h\u6587\u4ef6?<\/p>\n
A4) \u5982\u679c\u4f60\u6ca1\u6709\u7528PAM, vsftpd\u4f1a\u7528\u81ea\u5df1\u7684\u65b9\u6cd5\u68c0\u67e5\u7528\u6237\u7684shell\u662f\u5426\u5408\u6cd5. \u5982\u679c\u60f3\u7528\u4e00\u4e2a\u975e\u6cd5\u7684shell\uff08\u8fd9\u6837\u7528\u6237\u5c31\u53ea\u80fd\u7528FTP\u767b\u5f55\uff09\uff0c\u4f60\u53ef\u4ee5\u5728\u914d\u7f6e\u6587\u4ef6\u4e2d\u52a0\u5165check_shell=NO.<\/p>\n
Q7) \u6c42\u52a9\uff01\u4e0a\u4f20\u6216\u5176\u4ed6\u201d\u5199\u201c\u547d\u4ee4\u90fd\u62a5”500 Unknown command.”.<\/p>\n
A) \u9ed8\u8ba4\u60c5\u51b5\u4e0b\u201d\u5199\u201c\u547d\u4ee4\uff08\u4e0a\u4f20\u548c\u5efa\u65b0\u76ee\u5f55\u7b49\uff09\u90fd\u662f\u88ab\u7981\u6b62\u7684. \u8fd9\u662f\u4e00\u79cd\u5b89\u5168\u7684\u65b9\u6cd5. \u8981\u5141\u8bb8\u5199\u547d\u4ee4\u9700\u8981\u5728\u914d\u7f6e\u6587\u4ef6\/etc\/vsftpd.conf\u4e2d\u52a0\u5165write_enable=YES.<\/p>\n
Q8) \u6c42\u52a9\uff01chroot_local_user\u8fd9\u4e2a\u9009\u9879\u6709\u4ec0\u4e48\u5b89\u5168\u9690\u60a3\uff1f<\/p>\n
A) \u9996\u5148\u6ce8\u610f\u5176\u4ed6ftp\u670d\u52a1\u5668\u4e5f\u6709\u540c\u6837\u7684\u9690\u60a3\u3002\u8fd9\u662f\u4e2a\u4e00\u822c\u6027\u7684\u95ee\u9898\u3002\u8fd9\u4e2a\u95ee\u9898\u4e0d\u662f\u5f88\u4e25\u91cd\uff0c\u4f46\u5b83\u662f\u8fd9\u6837\u7684\uff1a\u6709\u4e9b\u4eba\u4f7f\u4e0d\u88ab\u4fe1\u4efb\u7684ftp\u5e10\u6237\u5177\u6709\u4e86\u5168\u90e8\u7684shell \u8bbf\u95ee\u6743\u9650\u3002\u5982\u679c\u8fd9\u4e9b\u5e10\u6237\u53ef\u4ee5\u4e0a\u4f20\u6587\u4ef6\uff0c\u90a3\u5c31\u4f1a\u6709\u4e00\u70b9\u98ce\u9669\u3002\u4e00\u4e2a\u574f\u7528\u6237\u5c31\u53ef\u4ee5\u63a7\u5236\u4f5c\u4e3a\u5176\u5bb6\u76ee\u5f55\u7684\u6587\u4ef6\u7cfb\u7edf\u7684\u6839\u76ee\u5f55\u3002FTP\u8fdb\u7a0b\u4e5f\u8bb8\u4f1a\u4f7f\u4e00\u4e9b\u914d\u7f6e\u6587\u4ef6\u88ab\u8bbf\u95ee\u5230\uff0c\u4f8b\u5982\/etc\/some_file\u3002\u4f7f\u7528chroot()\uff0c\u8fd9\u4e2a\u6587\u4ef6\u5c31\u5904\u4e8e\u6b64\u7528\u6237\u7684\u63a7\u5236\u4e4b\u4e0b\u3002vsftpd\u975e\u5e38\u5728\u610f\u8fd9\u4e9b\u5b89\u5168\u95ee\u9898\u3002\u4f46\u662f\uff0c\u7cfb\u7edf\u7684 libc\u4e5f\u8bb8\u60f3\u6253\u5f00\u8bed\u8a00\u914d\u7f6e\u6587\u4ef6\u6216\u5176\u4ed6\u7684\u4ec0\u4e48\u914d\u7f6e……<\/p>\n
Q9) \u6c42\u52a9\uff01\u4e0a\u4f20\u540e\u7684\u6587\u4ef6\u6743\u9650\u662f-rw——-\u3002<\/p>\n
A1) \u6839\u636e\u4e0a\u4f20\u7528\u6237\u662f\u672c\u5730\u7528\u6237\u8fd8\u662f\u533f\u540d\u7528\u6237\uff0c\u4fee\u6539local_umask\u6216anon_umask\u9009\u9879\u3002\u4f8b\u5982\uff0c\u8bbe\u7f6eanon_umask=022\u6307\u5b9a\u533f\u540d\u4e0a\u4f20\u7684\u6587\u4ef6\u6743\u9650\u4e3a-rw-r–r–\u3002\u6ce8\u610f\uff0c22\u524d\u9762\u76840\u4e0d\u80fd\u5c11\u3002<\/p>\n
A2) \u4e5f\u53ef\u4ee5\u770b\u770bvsftpd.conf\u7684man\u5e2e\u52a9\u4e2d\u7684\u65b0\u9009\u9879file_open_mode\u3002<\/p>\n
Q10) \u6c42\u52a9\uff01\u6211\u5982\u4f55\u96c6\u6210LDAP\u7528\u6237\u767b\u5f55\uff1f<\/p>\n
A) \u4f7fvsftpd\u7ed3\u5408PAM\uff0c\u914d\u7f6ePAM\u4f7f\u7528LDAP\u8ba4\u8bc1\u3002<\/p>\n
Q11) \u6c42\u52a9\uff01vsftpd\u53ef\u4ee5\u914d\u7f6e\u6210\u865a\u62df\u4e3b\u673a\uff08virtual hosting\uff09\u5417\uff1f<\/p>\n
A1) \u53ef\u4ee5\u3002\u5982\u679c\u4f60\u4f7f\u7528xinetd\u65b9\u5f0f\u8fd0\u884cvsftpd\uff0c\u53ef\u4ee5\u5c06xinetd\u7ed1\u5b9a\u5230\u51e0\u4e2a\u4e0d\u540c\u7684IP\u5730\u5740\u3002\u9488\u5bf9\u6bcf\u4e00\u4e2aIP\u5730\u5740\uff0cxinetd\u4f7f\u7528\u4e0d\u540c\u7684\u914d\u7f6e\u6587\u4ef6\u542f\u52a8vsftpd\u3002\u8fd9\u6837\uff0c\u4f60\u5c31\u80fd\u5728\u6bcf\u4e2aIP\u4e0a\u914d\u7f6e\u4e0d\u540c\u7684vsftpd\u670d\u52a1\u3002<\/p>\n
A2) \u4e5f\u53ef\u4ee5\u7528standalone\u65b9\u5f0f\u8fd0\u884c\u591a\u4e2avsftpd\u5b9e\u4f8b\u3002\u4f7f\u7528\u9009\u9879listen_address=x.x.x.x\u8bbe\u7f6e\u865a\u62dfIP\u3002<\/p>\n
Q12) \u6c42\u52a9\uff01vsftpd\u652f\u6301\u865a\u62df\u7528\u6237\uff08virtual users\uff09\u5417\uff1f<\/p>\n
A) \u652f\u6301\uff0c\u901a\u8fc7PAM\u96c6\u6210\u3002\u5728\/etc\/vsftpd.conf\u4e2d\u8bbe\u7f6eguest_enable=YES\uff0c\u8fd9\u6837\u7684\u6548\u679c\u662f\u6240\u6709\u975e\u533f\u540d\u7528\u6237\u7684\u6210\u529f\u767b\u5f55\u90fd\u6620\u5c04\u6210 guest_username\u6307\u5b9a\u7684\u672c\u5730\u7528\u6237\u3002\u7136\u540e\uff0c\u4f7f\u7528PAM\u548c\uff08\u4f8b\u5982\uff1a\uff09\u5b83\u7684pam_userdb\u6a21\u5757\uff0c\u5c31\u53ef\u4ee5\u63d0\u9ad8\u57fa\u4e8e\u5916\u90e8\u7528\u6237\u5e93\uff08\u5373\u4e0d\u4f7f\u7528\/etc \/passwd\uff09\u7684\u8ba4\u8bc1\u3002\u6ce8\u610f\uff1a\u5f53guest_enable\u751f\u6548\u540e\u4f1a\u6709\u4e00\u4e2a\u9650\u5236\uff0c\u5c31\u662f\u672c\u5730\u7528\u6237\u4e5f\u88ab\u6620\u5c04\u5230guest_username\uff08\u8bd1\u8005\uff1a\u4e5f\u5c31\u662f\u8bf4\u865a\u62df\u7528\u6237\u4e0e\u672c\u5730\u7528\u6237\u4e0d\u80fd\u540c\u65f6\u4f7f\u7528\uff09\u3002EXAMPLE\u76ee\u5f55\u91cc\u6709\u914d\u7f6e\u865a\u62df\u7528\u6237\u7684\u4f8b\u5b50\u3002<\/p>\n
Q13) \u6c42\u52a9\uff01vsftpd\u652f\u6301\u4e0d\u540c\u7684\u7528\u6237\u4f7f\u7528\u4e0d\u540c\u7684\u914d\u7f6e\u5417\uff1f<\/p>\n
A) \u652f\u6301\uff0c\u800c\u4e14\u529f\u80fd\u5f3a\u5927\u3002\u770bman\u5e2e\u52a9\u91cc\u7684user_config_dir\u9009\u9879\u3002<\/p>\n
Q14) \u6c42\u52a9\uff01\u6211\u53ef\u4ee5\u628avsftpd\u7684\u6570\u636e\u8fde\u63a5\uff08data connections\uff09\u9650\u5236\u5230\u6307\u5b9a\u8303\u56f4\u7684\u7aef\u53e3\u5417\uff1f<\/p>\n
A) \u53ef\u4ee5\u3002\u770b\u914d\u7f6e\u9009\u9879pasv_min_port\u548cpasv_max_port\u3002<\/p>\n
Q15) \u6c42\u52a9\uff01\u6211\u770b\u5230\u4e86”OOPS: chdir”\u8fd9\u6837\u7684\u4fe1\u606f\u3002<\/p>\n
A) \u5982\u679c\u8fd9\u662f\u533f\u540d\u7528\u6237\u5728\u767b\u5f55\uff0c\u5c31\u68c0\u67e5\u7cfb\u7edf\u7528\u6237ftp\u7684\u5bb6\u76ee\u5f55\u662f\u5426\u6b63\u786e\u3002\u5982\u679c\u4f60\u4f7f\u7528\u4e86anon_root\u8fd9\u4e2a\u9009\u9879\uff0c\u4e5f\u8981\u68c0\u67e5\u8be5\u9009\u9879\u662f\u5426\u6b63\u786e\u3002<\/p>\n
Q16) \u6c42\u52a9\uff01vsftpd\u663e\u793a\u7684\u662fGMT\u65f6\u95f4\uff0c\u800c\u4e0d\u662f\u672c\u5730\u65f6\u95f4!<\/p>\n
A) \u8fd9\u4e2a\u53ef\u4ee5\u901a\u8fc7\u8bbe\u7f6euse_localtime=YES\u6765\u89e3\u51b3\u3002<\/p>\n
Q17) \u6c42\u52a9\uff01\u6211\u80fd\u7981\u7528\u67d0\u4e9bFTP\u547d\u4ee4\u5417\uff1f<\/p>\n
A) \u53ef\u4ee5\u3002\u6709\u4e00\u4e9b\u5355\u72ec\u7684\u9009\u9879\uff08\u6bd4\u5982dirlist_enable\uff09\uff0c\u6216\u8005\u53ef\u4ee5\u901a\u8fc7cmds_allowed\u9009\u9879\u6307\u5b9a\u5141\u8bb8\u7684\u547d\u4ee4\u96c6\u3002<\/p>\n
Q18) \u6c42\u52a9\uff01\u6211\u53ef\u4ee5\u6539\u53d8vsftpd\u7684\u5de5\u4f5c\u7aef\u53e3\u5417\uff1f<\/p>\n
A1) \u53ef\u4ee5\u3002\u5982\u679c\u4ee5standalone\u65b9\u5f0f\u8fd0\u884cvsftpd\uff0c\u53ef\u4ee5\u7528vsftpd.conf\u4e2d\u7684listen_port\u9009\u9879\uff08\u6307\u5b9a\u7aef\u53e3\uff09\u3002<\/p>\n
A2) \u53ef\u4ee5\u3002\u5982\u679c\u4ee5inetd\u6216xinetd\u65b9\u5f0f\u8fd0\u884cvsftpd\uff0c\u90a3\u4e48\u8fd9\u4e2a\u95ee\u9898\u7531inetd\u6216xinetd\u8d1f\u8d23\u3002\u4f60\u5c31\u5fc5\u987b\u4fee\u6539inetd\u6216xinetd\u7684\u914d\u7f6e\u6587\u4ef6\uff08\u53ef\u80fd\u662f\/etc\/inetd.conf\u6216\/etc\/xinetd.d\/vsftpd\uff09\u3002<\/p>\n
Q19) \u6c42\u52a9\uff01vsftpd\u53ef\u4ee5\u4f7f\u7528LDAP\u670d\u52a1\u5668\u8fdb\u884c\u9a8c\u8bc1\u5417\uff1f\u6216\u8005\u4f7f\u7528Mysql\u6570\u636e\u5e93\uff1f<\/p>\n
A) \u662f\u7684\u3002vsftpd\u53ef\u4ee5\u4f7f\u7528PAM\u8fdb\u884c\u9a8c\u8bc1\uff0c\u6240\u4ee5\u4f60\u9700\u8981\u914d\u7f6ePAM\u4f7f\u7528pam_ldap\u6216pam_mysql\u6a21\u5757\u3002\u8fd9\u5305\u62ec\u5b89\u88c5PAM\u6a21\u5757\uff0c\u7136\u540e\u7f16\u8f91vsftpd\u7684PAM\u914d\u7f6e\u6587\u4ef6\uff08\u53ef\u80fd\u662f\/etc\/pam.d\/vsftpd\uff09\u3002<\/p>\n
Q20) \u6c42\u52a9\uff01vsftpd\u652f\u6301\u6bcfIP\u9650\u5236\uff08per-IP limits\uff09\u5417\uff1f<\/p>\n
A1) \u662f\u7684\u3002\u5982\u679c\u4ee5standalone\u65b9\u5f0f\u8fd0\u884cvsftpd\uff0c\u53ef\u4ee5\u4f7f\u7528max_per_ip\u9009\u9879\u3002<\/p>\n
A2) \u662f\u7684\u3002\u5982\u679c\u4ee5xinetd\u65b9\u5f0f\u8fd0vsftpd\uff0c\u53ef\u4ee5\u7528xinetd\u7684\u914d\u7f6e\u53c2\u6570per_source\u3002<\/p>\n
Q21) \u6c42\u52a9\uff01vsftpd\u652f\u6301\u5e26\u5bbd\u9650\u5236\u5417\uff1f<\/p>\n
A) \u652f\u6301\u3002\u770bman\u5e2e\u52a9\uff08vsftpd.conf.5\uff09\u4e2d\u7684”anon_max_rate”\u548c “local_max_rate”\u9009\u9879\u3002<\/p>\n
Q22) \u6c42\u52a9\uff01vsftpd\u652f\u6301\u57fa\u4e8eIP\uff08IP-based\uff09\u7684\u8bbf\u95ee\u63a7\u5236\u5417\uff1f<\/p>\n
A1) \u53ef\u4ee5\u7ed3\u5408tcp_wrappers\u5b9e\u73b0\uff08\u524d\u63d0\u662f\u7f16\u8bd1\u662f\u52a0\u4e86tcp_wrappers\u652f\u6301\uff09\u3002\u901a\u8fc7\u8bbe\u7f6etcp_wrappers=YES\u542f\u7528\u5b83\u3002<\/p>\n
A2) \u4ee5xinetd\u65b9\u5f0f\u8fd0\u884cvsftpd\uff0cxinetd\u53ef\u4ee5\u7ed3\u5408tcp_wrappers\u3002<\/p>\n
Q23) \u6c42\u52a9\uff01vsftpd\u652f\u6301IPv6\u5417\uff1f<\/p>\n
A) \u4ece\u7248\u672c1.2.0\u5f00\u59cb\u5c31\u652f\u6301\u4e86\u3002\u770bvsftpd.conf\u7684man\u5e2e\u52a9\u3002<\/p>\n
Q24) \u6c42\u52a9\uff01vsftpd\u7f16\u8bd1\u5931\u8d25\uff0c\u9519\u8bef\u662f\u4e0d\u80fd\u627e\u5230-lcap\uff08unable to find -lcap\uff09\u3002<\/p>\n
A) \u5b89\u88c5libcap package\u518d\u8bd5\u3002\u597d\u50cfDebian\u7528\u6237\u9047\u5230\u8fd9\u4e2a\u95ee\u9898\u591a\u4e00\u4e9b\u3002<\/p>\n
Q25) \u6c42\u52a9\uff01\u6211\u7684\u914d\u7f6e\u6587\u4ef6\u662f\/etc\/vsftpd.conf\uff0c\u53ef\u662f\u597d\u50cf\u4e0d\u8d77\u4f5c\u7528\uff01<\/p>\n
A) RedHat\u7528\u6237\u4f1a\u9047\u5230\u8fd9\u4e2a\u95ee\u9898 – \u4e00\u4e9bRedHat\u7248\u672c\u4e2dvsftpd\u7684\u914d\u7f6e\u6587\u4ef6\u662f\/etc\/vsftpd\/vsftpd.conf.<\/p>\n
Q26) \u6c42\u52a9\uff01vsftpd\u7f16\u8bd1\u5931\u8d25\uff0c\u62a5sysutil.c\u4e2d\u6709\u4e0d\u5b8c\u6574\u7684\u7c7b\u578b\uff08types\uff09\u3002<\/p>\n
A) \u4f60\u7684\u7cfb\u7edf\u53ef\u80fd\u4e0d\u652f\u6301IPv6\u3002\u8981\u4e48\u5728\u4e00\u4e2a\u73b0\u4ee3\u4e00\u4e9b\uff08\u652f\u6301IPv6\uff09\u7684\u7cfb\u7edf\u4e2d\u4f7f\u7528\u8001\u7248\u672c\u7684vsftpd\uff08\u4f8b\u5982 v1.1.3\uff09\uff0c\u8981\u4e48\u7b49\u6ca1\u6709\u8fd9\u4e2a\u95ee\u9898\u7684\u7248\u672c\u51fa\u6765\u3002<\/p>\n
Q27) \u6c42\u52a9\uff01\u4e0b\u8f7d\uff08\u5c24\u5176\u662f\u5927\u91cf\u5c0f\u6587\u4ef6\uff09\u65f6\u770b\u5230\u5f88\u591a\u8fd9\u6837\u7684\u4fe1\u606f\uff1a\u201c500 OOPS: vsf_sysutil_bind\u201d\u3002<\/p>\n
A) vsftpd-1.2.1\u5df2\u7ecf\u89e3\u51b3\u4e86\u8fd9\u4e2a\u95ee\u9898\u3002<\/p>\n
Q28) \u6c42\u52a9\uff01vsftpd\u53ef\u4ee5\u9690\u85cf\u6216\u62d2\u7edd\u8bbf\u95ee\u67d0\u4e9b\u6587\u4ef6\u5417\uff1f<\/p>\n
A) \u53ef\u4ee5\u3002\u770b\u770bvsftpd.conf\u7684man\u5e2e\u52a9\u4e2d\u7684hide_file\u548cdeny_file\u9009\u9879\u3002<\/p>\n
Q29) \u6c42\u52a9\uff01vsftpd\u652f\u6301FXP\u5417\uff1f<\/p>\n
A) \u652f\u6301\u3002FTP\u670d\u52a1\u5668\u4e0d\u9700\u8981\u7279\u522b\u914d\u7f6e\u5c31\u53ef\u4ee5\u652f\u6301FXP\u3002\u4f46\u7531\u4e8evsftpd\u5728IP\u5730\u5740\u4e0a\u7684\u5b89\u5168\u9650\u5236\uff0c\u4f60\u53ef\u80fd\u4e0d\u4f1a\u6210\u529f\u3002\u60f3\u653e\u5bbd\u8fd9\u79cd\u9650\u5236\uff0c\u53ef\u4ee5\u770b\u770b vsftpd.conf\u7684man\u5e2e\u52a9(vsftpd.conf.5)\u4e2d\u5173\u4e8epasv_promiscuous\uff08\u548c\u4e0d\u592a\u63a8\u8350\u4f7f\u7528\u7684 port_promiscuous\uff09\u9009\u9879\u3002<\/p>\n
Q30) ……<\/p>\n
A) \u60f3\u8fdb\u4e00\u6b65\u4e86\u89e3vsftpd\uff0c\u8bf7\u9605\u8bfbvsftpd.conf\u7684man\u5e2e\u52a9\u548c\u914d\u7f6e\u793a\u4f8b\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
vsftpd \u662f\u4e00\u4e2a UNIX \u7c7b\u64cd\u4f5c\u7cfb\u7edf\u4e0a\u8fd0\u884c\u7684\u670d\u52a1\u5668\u7684\u540d\u5b57\uff0c\u5b83\u53ef\u4ee5\u8fd0\u884c\u5728\u8bf8\u5982 Linux, BSD, So […]<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[2486,3013,3014],"class_list":["post-1880","post","type-post","status-publish","format-standard","hentry","category-linuxunix","tag-faq","tag-vsftpd","tag-3014","category-16-id","post-seq-1","post-parity-odd","meta-position-corners","fix"],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/www.icocean.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/1880","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.icocean.com\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.icocean.com\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.icocean.com\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.icocean.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1880"}],"version-history":[{"count":0,"href":"https:\/\/www.icocean.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/1880\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.icocean.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1880"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.icocean.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1880"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.icocean.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1880"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}