DHCP starvation attacks are designed to deplete all of the addresses within the DHCP scope on a particular segment. Subsequently, a legitimate user is denied an IP address requested via DHCP and thus is not able to access the network.\u00a0 Yersinia is one such free hacking tool that performs automated DHCP starvation attacks. DHCP starvation may be purely a DoS mechanism or may be used in conjunction with a malicious rogue server attack to redirect traffic to a malicious computer ready to intercept traffic. Imagine a user filling up the dhcp\u00a0pool and then re-directing users to their own DHCP server.<\/p>\n
How do you fix this?
\n802.11 has several mechanisms built in. DHCP Proxy is one way. Port security is another. If you are running Mikrotik there are some scripts which can alert you to rogue\u00a0DHCP servers, but that is an after-the-fact kind of thing.<\/p>\n
<\/p>\n","protected":false},"excerpt":{"rendered":"
DHCP starvation attacks are designed to deplete all of the addresses within the DHCP scope on a particular segment. Subsequently, a legitimate user is denied an IP address requested via DHCP and thus is not able to access the network.\u00a0 Yersinia is one such free hacking tool that performs automated DHCP starvation attacks. DHCP starvation […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","jetpack_publicize_message":"","jetpack_is_tweetstorm":false,"jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","enabled":false}}},"categories":[274,86],"tags":[171,518,108,519,88],"jetpack_publicize_connections":[],"aioseo_notices":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p6VLMf-ne","jetpack-related-posts":[{"id":2837,"url":"http:\/\/www.mtin.net\/blog\/baicells-public-ips-on-client-routers\/","url_meta":{"origin":1440,"position":0},"title":"Baicells: Public IPs on client routers","author":"j2sw","date":"February 7, 2019","format":false,"excerpt":"Public IPs on Baicells Client Routers. I needed to Provide a few customers with Public IPs while most of the UEs and clients got private IP. The following is what I did to allow this to work: Requirements: EnodeB in Bridge mode UE in NAT mode MikroTik Router with DHCP\u2026","rel":"","context":"In "Wireless"","block_context":{"text":"Wireless","link":"http:\/\/www.mtin.net\/blog\/category\/wireless\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.mtin.net\/blog\/wp-content\/uploads\/2017\/05\/17821343_1510820508928612_1776831623_n.jpg?fit=405%2C720&resize=350%2C200","width":350,"height":200},"classes":[]},{"id":60,"url":"http:\/\/www.mtin.net\/blog\/router-os-6-14-released\/","url_meta":{"origin":1440,"position":1},"title":"Router OS 6.14 Released","author":"j2sw","date":"June 9, 2014","format":false,"excerpt":"We have made some interesting new features, including the new \"ip cloud\" menu, and general release of CAPsMAN: What's new in 6.14 (2014-Jun-06 15:34): Quote: *) sntp - 'mode' now is a read-only property, it is set to broadcast if no server ip address is specified; *) smb - fixed\u2026","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":2232,"url":"http:\/\/www.mtin.net\/blog\/mikrotik-releases-6-42\/","url_meta":{"origin":1440,"position":2},"title":"Mikrotik Releases 6.42","author":"j2sw","date":"April 25, 2018","format":false,"excerpt":"From Mikrotik We have released new RouterOS versions in current channel. To upgrade, click \"Check for updates\" at \"System\/Package\" in your RouterOS configuration interface, or head to our download page: http:\/\/www.mikrotik.com\/download What's new in 6.42 (2018-Apr-13 11:03): !) tile - improved system performance and stability (\"\/system routerboard upgrade\" required); !)\u2026","rel":"","context":"In \"mikrotik\"","block_context":{"text":"mikrotik","link":"http:\/\/www.mtin.net\/blog\/tag\/mikrotik-2\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":522,"url":"http:\/\/www.mtin.net\/blog\/lots-of-changes-in-routeros-6-34\/","url_meta":{"origin":1440,"position":3},"title":"Lots of changes in RouterOS 6.34","author":"j2sw","date":"January 29, 2016","format":false,"excerpt":"Lots of changes in RouterOS 6.34 Some Standouts that will be of benefit to alot of folks I know *) mipsle - architecture support dropped (last fully supported version 6.32.x); *) btest - significantly increased TCP bandwidth test performance; *) ssh - fixed possible kernel crash; *) crs212 - fix\u2026","rel":"","context":"In "Mikrotik"","block_context":{"text":"Mikrotik","link":"http:\/\/www.mtin.net\/blog\/category\/mikrotik\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":1379,"url":"http:\/\/www.mtin.net\/blog\/simple-shut-off-scripting\/","url_meta":{"origin":1440,"position":4},"title":"Simple shut-off scripting","author":"j2sw","date":"September 15, 2016","format":false,"excerpt":"I had a client today who is doing some manual things as they are using Quickbooks for billing and such. \u00a0One thing they kind of struggle with is turning off people for non-payment and such. \u00a0Their current method is adding a que and throttling someone to a low-speed to make\u2026","rel":"","context":"In "Mikrotik"","block_context":{"text":"Mikrotik","link":"http:\/\/www.mtin.net\/blog\/category\/mikrotik\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":2554,"url":"http:\/\/www.mtin.net\/blog\/common-questions-masquerade-vs-src-nat-action-mikrotik\/","url_meta":{"origin":1440,"position":5},"title":"Common Questions: masquerade vs src-nat action Mikrotik","author":"j2sw","date":"October 26, 2018","format":false,"excerpt":"One of the common questions I get is what is the difference between Masquerade and SRC-NAt? 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The Mikrotik Wiki Entry Firewall NAT action=masquerade is unique subversion\u2026","rel":"","context":"In "Mikrotik"","block_context":{"text":"Mikrotik","link":"http:\/\/www.mtin.net\/blog\/category\/mikrotik\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.mtin.net\/blog\/wp-content\/uploads\/2014\/09\/2014-08-05-19.26.03.png?fit=650%2C650&resize=350%2C200","width":350,"height":200},"classes":[]}],"jetpack_likes_enabled":true,"_links":{"self":[{"href":"http:\/\/www.mtin.net\/blog\/wp-json\/wp\/v2\/posts\/1440"}],"collection":[{"href":"http:\/\/www.mtin.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.mtin.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.mtin.net\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.mtin.net\/blog\/wp-json\/wp\/v2\/comments?post=1440"}],"version-history":[{"count":1,"href":"http:\/\/www.mtin.net\/blog\/wp-json\/wp\/v2\/posts\/1440\/revisions"}],"predecessor-version":[{"id":2056,"href":"http:\/\/www.mtin.net\/blog\/wp-json\/wp\/v2\/posts\/1440\/revisions\/2056"}],"wp:attachment":[{"href":"http:\/\/www.mtin.net\/blog\/wp-json\/wp\/v2\/media?parent=1440"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.mtin.net\/blog\/wp-json\/wp\/v2\/categories?post=1440"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.mtin.net\/blog\/wp-json\/wp\/v2\/tags?post=1440"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}