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Anonymous FTP Daemon 0.0.2

Company: Anton Perkov
Date Added: November 10, 2013  |  Visits: 233

Anonymous FTP Daemon

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Anonymous FTP Daemon (aftpd) is a FTP server for anonymous access is designed for UNIX-like operating system.<br /><br />Concept<br /><br />Typical ftp-server stipulates that each remote user enters the system using their own account. The server creates a separate process to serve each session, and uses system calls setuid and setgid to accord permissions logged in user.<br /><br />For public ftp-archives, that provide anonymous access (login: anonynous or ftp) for large number of users; this way is excessively resource-intensive: a large number of processes appears in the system (each have the same permissions); it causes bulky demand of memory and overrun CPU because of context switching from one process to another.<br />aftpd designed to make the work of anonymous ftp-archives more efficient, but does not provide facilities of typical ftp - login available only with permissions of an anonymous user.<br /><br />Overview<br /><br />aftpd - ftp-server for anonymous access is designed for UNIX-like operating systems, that:<br /><br /> * Uses asynchronous model of connections' processing and provide service for all users within a single process.<br /> * Can use multiple threads to run more efficiently on multi-core systems, with each thread serving multiple clients simultaneously.<br /> * Uses effective mechanisms of transferring files, minimizing copying of data in RAM - sendfile or combination of system calls mmap/writev (if it is need to transform contents of the file). mmap is as well used on systems that doesn't support sendfile.<br /> * Uses effective event notification schemes - kqueue on FreeBSD, epoll on Linux. It uses poll or select in older systems.<br /> * Supports IPv6.<br /> * For safety it works as unprivileged user and the chroot (after running "/" is moved to root directory of ftp-archive). Root permissions required to start.<br /> * Uses syslog for error notifications and logged users.<br /><br />Standards<br /><br />Current version (0.0.1) is compatible with:<br /><br /> * RFC 959 FILE TRANSFER PROTOCOL.<br /> * RFC 2389 Feature negotiation mechanism for the File Transfer Protocol.<br /><br />and partly compatible with:<br /><br /> * RFC 2428 FTP Extensions for IPv6 and NATs. Doesn't support parameter ALL of EPSV command.<br /> * RFC 3659 Extensions to FTP. Only REST, MDTM, SIZE commands are supported.<br /><br />Compatibility<br /><br />aftpd designated for a wide range of UNIX-like operating systems. But the current release 0.0.1 has been tested only on FreeBSD 7.2/i386 and Linux 2.6.3/i386.<br /><br />Installation:<br /><br />Run:<br /><br />./configure<br />make<br /><br />Next command must be run by "root":<br /><br />make install<br /><br />After successful installation you will see message with path to configuration file and startup script.<br /><br />Default configuration file determines that daemon must work as user "ftp".<br />In most systems "ftp" is predefined user that intended for anonymous ftp access.<br /><br />If you got error message like 'User "ftp" not exist' when server starting, you probably need to create or unblock it.<br /><br />Also you can specify other user in configuration file.<br /><br />#md5=66fd71207bb9be1aed6a598b1a133cd7

Requirements: No special requirements
Platforms: *nix, Linux
Keyword: Access Anonymous Command Configuration Designed Effective Error Large Login Multiple Number Operating Permissions Process Provide Server System Systems Unixlike Users
Users rating: 0/10

License: Freeware Size: 20.48 KB
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