aim sand industry networking hardware and software founded waterloo ontario 2001 headquarters waterloo ontario key people dave caputo co founder president and ceo scott hamilton cfo tom donnely co founder evp marketing & sales brad siim co founder coo and vp engineering don bowman co founder ctoemployer slogan intelligent broadband networks website www.sandvine.com sandvine incorporated is a networking equipment company 1 based in waterloo ontario canada . sandvine network policy control products are designed to implement broad network policies ranging from service creation 2 billing 3 congestion management and security . 4 sandvine targets its products at consumer tier 1 and tier 2 networks including cable dsl and mobile . 5 contents 1 company history 2 technology 3 network neutrality debate 4 see also 5 references 6 external links company history edit sandvine was formed in august 2001 in waterloo ontario canada by a team of approximately 30 people from a recently closed cisco acquisition pixstream . an initial round of vc funding launched the company with 20m cdn . a subsequent round of financing of 19m cdn was completed in may 2005 . in march 2006 sandvine completed an initial public offering on the london aim exchange under the ticker sand . in october 2006 sandvine completed an initial public offering on the toronto stock exchange under the ticker svc . initial product sales focused at congestion management as operators struggled with the high growth of broadband . many operators have shifted focus to revenue generating services and reducing operational expenditure . in june 2007 sandvine acquired cablematrix technologies for its packetcable multimedia pcmm based pcrf that enable broadband operators to increase subscriber satisfaction while delivering media rich ip applications and services such as sip telephony video streaming on line gaming and videoconferencing . 6 technology edit sandvine s technology focuses on policy management including the control of spam usage based billing quality of service and p2p throttling . they use freebsd as the basis for their appliances . 7 rather than identifying individual messages spam control is based on identifying sources of spam from behaviors such as using multiple smtp servers using multiple source ehlo domains and large address books . 8 9 quality of service control is provided for a range of media applications including video conferencing voip and gaming . 10 11 the p2p throttling 12 focuses on gnutella and uses a path cost algorithm to reduce speeds while still delivering the same content . stateful policy management 13 uses stateful deep packet inspection and packet spoofing to allow the networking device to determine the details of the p2p conversation including the hash requested . the device can then determine the optimal peer to use and substitute it for the one selected by the p2p algorithm by sitting in the middle imitating both ends of the connection and sending reset packets to both client and server . 14 the usage based billing includes 15 pre paid and post paid 3g and 4g mobile access as well as all fixed access . 16 network neutrality debate edit sandvine products were used by comcast in the united states to limit number of sessions of internet traffic generated by peer to peer file sharing software . 17 sandvine s current traffic discrimination product fairshare is described in detail in an rfc . 18 according to independent testing 19 comcast injected reset packets into peer to peer connections which effectively caused a certain limited number of outbound connections to immediately terminate . this method of network management was described in the ieee communications may 2000 article nonintrusive tcp connection admission control for bandwidth management of an internet access link . 20 a product whitepaper published by sandvine confirms that its products are configurable to use session management capability to prevent customers using bittorrent from providing uploads to peers who are not close to them on the network . this affects all uses of bittorrent such as open source project distribution patch distribution and illegal downloads . in cases where a subscriber is a seeder and uploads content to an off net leecher session management is an effective strategy ... the subscriber may be session managed without negative impact . this is the default behaviour for sandvine s session management policy and limits external leechers from connecting to internal seeds . 21 see also edit deep packet inspection references edit company profile for sandvine corp ca ; svc . retrieved 2008 10 16 . sandvine incorporated press release starhub selects sandvine to deploy end to end packetcable multimedia solution sandvine incorporated press release major wireless carrier selects sandvine s 10 gigabit ethernet solution to give subscribers more control over their mobile internet experience adelphia selects sandvine to protect subscribers from worms and spam . free online library sandvine management s discussion and analysis sandvine buys cablematrix for peanuts ; founder laurence rubin is upbeat this is an opportunity haaretz 21.06.07 maste ed . freebsd at sandvine . bsdcan 2011 . a system and method for detecting sources of abnormal computer network messages patent ep1743466 wo 2005 109816 a system and method for detecting sources of abnormal computer network messages sandvine incorporated service delivery engine cnw group vecima networks inc. cablematrix and vcom showcase first qos enhanced video conferencing over wimax solution wo 2003 094465 path optimizer for peer to peer networks meeting the challenge of today s evasive p2p traffic comcast traffic blocking even more apps groupware clients affected sandvine supports cricket broadband internet sandvine supports pre and post paid service plans across converged networks comcast s compliance report to fcc on its previous network management techniques comcast s protocol agnostic congestion management system eff.org article on comcast jamming gnutella and lotus kumar a. ; hegde m. ; anand s.v.r. ; bindu b.n. ; thirumurthy d. ; kherani a.a. may 2000 . nonintrusive tcp connection admission control for bandwidth management of an internet access link . ieee communications magazine . 38 5 160 167 . doi 10.1109 35.841841 . issn 0163 6804 . session management bittorrent protocol managing the impact on subscriber experience http www.sandvine.com general getfile.asp fileid 21 archived october 8 2008 at the wayback machine . external links edit sandvine slashdot comcast filtering network packets dslreports comcast is using sandvine to manage p2p connections retrieved from https en.wikipedia.org w index.php title sandvine & oldid 717406346 categories companies listed on the toronto stock exchangecompanies based in waterloo ontarioelectronics companies of canadanetworking hardware companiesdeep packet inspectionhidden categories articles with wayback machine linkspages using infobox company with unsupported parameters navigation menu personal tools not logged intalkcontributionscreate accountlog in namespaces article talk variants views read edit view history more search navigation main pagecontentsfeatured contentcurrent eventsrandom articledonate to wikipediawikipedia store interaction helpabout wikipediacommunity portalrecent changescontact page tools what links hererelated changesupload filespecial pagespermanent linkpage informationwikidata itemcite this page print export create a bookdownload as pdfprintable version languages add links this page was last modified on 27 april 2016 at 14 19 . text is available under the creative commons attribution sharealike license ; 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