You should set this directory up with mode 733, owned by root (not ftp). In cases where the anonymous user must be able to upload files, we strongly suggest you select one directory, such as /pub/incoming, for uploads. \( -user ftp -a -type d \) -exec /bin/chown 0 \ \) To correct this problem, you can do the following as root: # cd ~ftp If either condition is true, the ftp area can be abused. Directories are owned by the anonymous user (ftp).Directories are created with world write permissions.Generally, write access is granted in one of two ways: The key to disallowing uploads by the anonymous user is disabling write access for that user. Section II: Limiting the anonymous user to downloading only. ![]() Note that departments with anonymous ftp access set up on a specific system should take care to ensure that the ftp account is not in the NIS password file, as that will enable it on all the systems in the NIS domain. Disabling anonymous ftp access altogether is as simple as removing this entry. Section I: Disabling anonymous ftp access altogether.Īnonymous ftp activity in Unix and Linux is enabled by adding the user “ftp” to the password file (locally or in the NIS password file). We have provided directions for configuring both generic UNIX or Linux FTP servers and Microsoft’s Internet Information Server (IIS) below. We have provided a script to help do that below, and you can also use Baseline to watch over your ftp area.
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