Close the Gate, Lock the Windows, Bolt the Doors: Securing Library Computers. Online Treasures

Fuente: ERIC Institute of Education Sciences

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Bibliographic Details
Main Author:	Balas, Janet
Format:	Recurso educativo Open Access
Language:	en
Published:	2005
Subjects:	Public Libraries Computers Computer Security Computer Software Internet
Online Access:	Acceder al recurso
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author	Balas, Janet
author_facet	Balas, Janet Balas, Janet
collection	Education Resources Information Center
contents	Close the Gate, Lock the Windows, Bolt the Doors: Securing Library Computers. Online Treasures Balas, Janet Public Libraries Computers Computer Security Computer Software Internet This article, written by a systems librarian at the Monroeville Public Library, discusses a major issue affecting all computer users, security. It indicates that while, staying up-to-date on the latest security issues has become essential for all computer users, it's more critical for network managers who are responsible for securing computer workstations and network servers. Yet many systems librarians have assumed the job of managing library networks by default and never have expected that they would have to become security experts in order to do this successfully. While systems librarians may bear the heaviest responsibility for computer security, all librarians need to be well-informed on the subject in order to follow good practices as they use computers (both in the library and at home) and also to be able to assist patrons who are searching for information on this timely topic. The following topics are covered in the article: The Final Say on Security; Assistance from Vendors; Securing Public Computers; and Must-Knows of Security.
format	Recurso educativo Open Access
id	eric_EJ684017
institution	ERIC Institute of Education Sciences
language	en
publishDate	2005
record_format	eric
spellingShingle	Close the Gate, Lock the Windows, Bolt the Doors: Securing Library Computers. Online Treasures Balas, Janet Public Libraries Computers Computer Security Computer Software Internet Close the Gate, Lock the Windows, Bolt the Doors: Securing Library Computers. Online Treasures Balas, Janet Public Libraries Computers Computer Security Computer Software Internet This article, written by a systems librarian at the Monroeville Public Library, discusses a major issue affecting all computer users, security. It indicates that while, staying up-to-date on the latest security issues has become essential for all computer users, it's more critical for network managers who are responsible for securing computer workstations and network servers. Yet many systems librarians have assumed the job of managing library networks by default and never have expected that they would have to become security experts in order to do this successfully. While systems librarians may bear the heaviest responsibility for computer security, all librarians need to be well-informed on the subject in order to follow good practices as they use computers (both in the library and at home) and also to be able to assist patrons who are searching for information on this timely topic. The following topics are covered in the article: The Final Say on Security; Assistance from Vendors; Securing Public Computers; and Must-Knows of Security.
title	Close the Gate, Lock the Windows, Bolt the Doors: Securing Library Computers. Online Treasures
topic	Public Libraries Computers Computer Security Computer Software Internet
url	https://eric.ed.gov/?id=EJ684017

if (filemtime($filename) + $maxlifetime < time()) { unlink($filename); $count++; } } return $count; } /** * A function that is called internally when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ protected function saveSession($sessId, $data): bool { $sessFile = $this->path . '/sess_' . $sessId; if ($handle = fopen($sessFile, 'w')) { $return = false; // Lock the file for exclusive access to avoid issues with multiple // processes writing session simultaneously: if (flock($handle, LOCK_EX)) { $return = fwrite($handle, $data); // Make sure that there's no trailing data by truncating the file to // the correct length: ftruncate($handle, strlen($data)); fflush($handle); flock($handle, LOCK_UN); } fclose($handle); if ($return !== false) { return true; } } // If we got this far, something went wrong with the file output... // It is tempting to throw an exception here, but this code is called // outside of the context of exception handling, so all we can do is // echo a message.

// Anecdotal testing Today and Yesterday seems to indicate destroy() // is called by the garbage collector and everything is good. // Something to keep in mind though. return 0; } /** * Write function that is called when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ public function write($sessId, $data): bool { if ($this->writesDisabled) { return true; } return $this->saveSession($sessId, $data); } /** * A function that is called internally when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ abstract protected function saveSession($sessId, $data): bool; }

* * @return void */ public function writeClose() { // The assumption is that we're using PHP's ext/session. // session_write_close() will actually overwrite $_SESSION with an // empty array on completion -- which leads to a mismatch between what // is in the storage object and $_SESSION. To get around this, we // temporarily reset $_SESSION to an array, and then re-link it to // the storage object. // // Additionally, while you _can_ write to $_SESSION following a // session_write_close() operation, no changes made to it will be // flushed to the session handler. As such, we now mark the storage // object isImmutable. $storage = $this->getStorage(); if (! $storage->isImmutable()) { $_SESSION = $storage->toArray(true); session_write_close(); $storage->fromArray($_SESSION); $storage->markImmutable(); } } /** * Attempt to set the session name * * If the session has already been started, or if the name provided fails * validation, an exception will be raised. * * @param string $name * @return SessionManager * @throws Exception\InvalidArgumentException */ public function setName($name) { if ($this->sessionExists()) { throw new Exception\InvalidArgumentException( 'Cannot set session name after a session has already started'

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