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Each setting has a compiled in default which may be modified in the configuration file. anon_root This option represents a directory which vsftpd will try to change into after an anonymous login. Failure is silently ignored. Default: (none) banned_email_file This option is the name of a file containing a list of anonymous e-mail passwords which are not permitted. Default: /etc/vsftpd.banned_emails banner_file This option is the name of a file containing text to display when someone connects to the server. Ca_certs_file This option is the name of a file to load Certificate Authority certs from, for the purpose of validating client certs.
Chown_username This is the name of the user who is given ownership of anonymously uploaded files. Default: root chroot_list_file The option is the name of a file containing a list of local users which will be placed in a chroot() jail in their home directory. Cmds_allowed. Ch14 : Linux Firewalls Using iptables. Network security is a primary consideration in any decision to host a website as the threats are becoming more widespread and persistent every day.
One means of providing additional protection is to invest in a firewall. Though prices are always falling, in some cases you may be able to create a comparable unit using the Linux iptables package on an existing server for little or no additional expenditure. This chapter shows how to convert a Linux server into: A firewall while simultaneously being your home website's mail, web and DNS server.
A router that will use NAT and port forwarding to both protect your home network and have another web server on your home network while sharing the public IP address of your firewall. Creating an iptables firewall script requires many steps, but with the aid of the sample tutorials, you should be able to complete a configuration relatively quickly. Before you begin, you need to make sure that the iptables software RPM is installed.
In this example: Ch15 : Linux FTP Server Setup. The File Transfer Protocol (FTP) is used as one of the most common means of copying files between servers over the Internet.
Most web based download sites use the built in FTP capabilities of web browsers and therefore most server oriented operating systems usually include an FTP server application as part of the software suite. Linux is no exception. This chapter will show you how to convert your Linux box into an FTP server using the default Very Secure FTP Daemon (VSFTPD) package included in Fedora. FTP relies on a pair of TCP ports to get the job done. It operates in two connection channels as I'll explain: FTP Control Channel, TCP Port 21: All commands you send and the ftp server's responses to those commands will go over the control connection, but any data sent back (such as "ls" directory lists or actual file data in either direction) will go over the data connection.
FTP Data Channel, TCP Port 20: This port is used for all subsequent data transfers between the client and server.
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