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FTPCHROOT(5) File Formats Manual FTPCHROOT(5) NAME ftpchroot -- list users and groups subject to FTP access restrictions DESCRIPTION The file ftpchroot is read by ftpd(8) at the beginning of an FTP ses- sion, after having authenticated the user. Each line in ftpchroot cor- responds to a user or group. If a line in ftpchroot matches the cur- rent user or a group he is a member of, access restrictions will be ap- plied to this session by changing its root directory with chroot(2) to that specified on the line or to the user's login directory. The order of records in ftpchroot is important because the first match will be used. Fields on each line are separated by tabs or spaces. The first field specifies a user or group name. If it is prefixed by an "at" sign, `@', it specifies a group name; the line will match each user who is a member of this group. As a special case, a single `@' in this field will match any user. A username is specified otherwise. The optional second field describes the directory for the user or each member of the group to be locked up in using chroot(2). Be it omitted, the user's login directory will be used. If it is not an absolute pathname, then it will be relative to the user's login directory. If it contains the /./ separator, ftpd(8) will treat its left-hand side as the name of the directory to do chroot(2) to, and its right-hand side to change the current directory to afterwards. FILES /etc/ftpchroot EXAMPLES These lines in ftpchroot will lock up the user "webuser" and each mem- ber of the group "hostee" in their respective login directories: webuser @hostee And this line will tell ftpd(8) to lock up the user "joe" in /var/spool/ftp and then to change the current directory to /joe, which is relative to the session's new root: joe /var/spool/ftp/./joe And finally the following line will lock up every user connecting through FTP in his respective ~/public_html, thus lowering possible im- pact on the system from intrinsic insecurity of FTP: @ public_html SEE ALSO chroot(2), group(5), passwd(5), ftpd(8) FreeBSD 14.3 January 26, 2003 FTPCHROOT(5)
NAME | DESCRIPTION | FILES | EXAMPLES | SEE ALSO
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