{"id":77114,"date":"2020-01-22T10:36:26","date_gmt":"2020-01-22T05:06:26","guid":{"rendered":"https:\/\/www.vskills.in\/certification\/tutorial\/?p=77114"},"modified":"2024-04-12T14:24:07","modified_gmt":"2024-04-12T08:54:07","slug":"wlan-security","status":"publish","type":"page","link":"https:\/\/www.vskills.in\/certification\/tutorial\/wlan-security\/","title":{"rendered":"WLAN Security"},"content":{"rendered":"\n<p><a href=\"https:\/\/www.vskills.in\/certification\/tutorial\/white-hat-hacking-tutorials\/\" target=\"_blank\" rel=\"noreferrer noopener\">Go back to Tutorial<\/a><\/p>\n\n\n<p>WLANs faces threats similar to LANs and new security threats also which includes<\/p>\n<ul>\n<li>War&nbsp;drivers \u2013 Person drives&nbsp;around,&nbsp;trying to find APs&nbsp;that have no&nbsp;or weak security.<\/li>\n<li>Hackers&nbsp;\u2013 They&nbsp;find information or deny&nbsp;services and the wireless&nbsp;network&nbsp;makes easy access.<\/li>\n<li>Defaults \u2013 An&nbsp;new AP&nbsp;is being used with its defaults thus, easy to hack.<\/li>\n<\/ul>\n<p>Tools&nbsp;used to increase security are<\/p>\n<ul>\n<li>Authentication \u2013 Authentication with mutual secret password.<\/li>\n<li>Encryption&nbsp;\u2013&nbsp;Using encryption&nbsp;to scramble the contents of transmitted data.<\/li>\n<li>Intrusion Tools&nbsp;\u2013 They detect and identify rogue APs and include IDS and IPS<\/li>\n<\/ul>\n<p>The initial security standard for WLANs was called Wired Equivalent Privacy (WEP) but had various problems like<\/p>\n<ul>\n<li>Static&nbsp;Pre-shared&nbsp;keys (PSK)&nbsp;\u2013 Keys used were manually configured&nbsp;and were static.<\/li>\n<li>Low key values \u2013 Keys were usually 64 bit and were easier to predict from frames.<\/li>\n<\/ul>\n<p>But, SSID cloaking and MAC filtering helped in adding security. SSID cloaking involves steps as<\/p>\n<ul>\n<li>The AP&nbsp;sends&nbsp;a periodic&nbsp;Beacon frame (default&nbsp;is every&nbsp;100 ms)&nbsp;that lists the AP\u2019s SSID and other&nbsp;configuration information.<\/li>\n<li>The client&nbsp;listens for&nbsp;Beacons&nbsp;on&nbsp;all channels, learning about all APs&nbsp;in range.<\/li>\n<li>The client&nbsp;associates&nbsp;with the AP&nbsp;with the strongest signal&nbsp;(the default),&nbsp;or with the AP&nbsp;with the strongest signal&nbsp;for&nbsp;the currently preferred SSID.<\/li>\n<li>The authentication process&nbsp;occurs as soon as the client&nbsp;has&nbsp;associated&nbsp;with the AP.<\/li>\n<\/ul>\n<p>The client learn about AP and its SSIDs via the beacon which helps in roaming and associate with new AP as needed. AP are configured with list of allowed WLAN MAC addresses and to filter rest but, it is circumvented by changing the MAC address as that of legitimate MAC address. Improved security standard called WPA and later WPA2 (also called IEEE 802.11i ) were also introduced which dynamic&nbsp;key&nbsp;exchange,&nbsp;preshared&nbsp;keys (PSK), and AES&nbsp;encryption. All security standards are compared as<\/p>\n<table width=\"533\">\n<tbody>\n<tr>\n<td width=\"164\"><strong>Feature<\/strong><\/td>\n<td width=\"79\"><strong>WEP<\/strong><\/td>\n<td width=\"145\"><strong>WPA<\/strong><\/td>\n<td width=\"145\"><strong>WPA2<\/strong><\/td>\n<\/tr>\n<tr>\n<td width=\"164\">Key Distribution<\/td>\n<td width=\"79\">Static<\/td>\n<td width=\"145\">Static and Dynamic<\/td>\n<td width=\"145\">Static and Dynamic<\/td>\n<\/tr>\n<tr>\n<td width=\"164\">Device Authentication<\/td>\n<td width=\"79\">Weak<\/td>\n<td width=\"145\">Strong<\/td>\n<td width=\"145\">Strong<\/td>\n<\/tr>\n<tr>\n<td width=\"164\">User Authentication<\/td>\n<td width=\"79\">No<\/td>\n<td width=\"145\">802.1x<\/td>\n<td width=\"145\">802.1x<\/td>\n<\/tr>\n<tr>\n<td width=\"164\">Encryption<\/td>\n<td width=\"79\">Weak<\/td>\n<td width=\"145\">TKIP<\/td>\n<td width=\"145\">AES<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>\n\n\n<p><a href=\"https:\/\/www.vskills.in\/certification\/tutorial\/white-hat-hacking-tutorials\/\" target=\"_blank\" rel=\"noreferrer noopener\">Go back to Tutorial<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Go back to Tutorial WLANs faces threats similar to LANs and new security threats also which includes War&nbsp;drivers \u2013 Person drives&nbsp;around,&nbsp;trying to find APs&nbsp;that have no&nbsp;or weak security. Hackers&nbsp;\u2013 They&nbsp;find information or deny&nbsp;services and the wireless&nbsp;network&nbsp;makes easy access. Defaults \u2013 An&nbsp;new AP&nbsp;is being used with its defaults thus, easy to hack. Tools&nbsp;used to increase security&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"categories":[341],"tags":[8989],"class_list":["post-77114","page","type-page","status-publish","hentry","category-white-hat-hacking-and-security","tag-wlan-security"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>WLAN Security - Tutorial<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.vskills.in\/certification\/tutorial\/wlan-security\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"WLAN Security - Tutorial\" \/>\n<meta property=\"og:description\" content=\"Go back to Tutorial WLANs faces threats similar to LANs and new security threats also which includes War&nbsp;drivers \u2013 Person drives&nbsp;around,&nbsp;trying to find APs&nbsp;that have no&nbsp;or weak security. Hackers&nbsp;\u2013 They&nbsp;find information or deny&nbsp;services and the wireless&nbsp;network&nbsp;makes easy access. Defaults \u2013 An&nbsp;new AP&nbsp;is being used with its defaults thus, easy to hack. 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Hackers&nbsp;\u2013 They&nbsp;find information or deny&nbsp;services and the wireless&nbsp;network&nbsp;makes easy access. Defaults \u2013 An&nbsp;new AP&nbsp;is being used with its defaults thus, easy to hack. 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