Bluecoat Websocket Support

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CacheFlow breaks Websocket supported Webpages

    https://support.symantec.com/us/en/article.TECH240940.html
    When accessing a Websocket supported webpage through CacheFlow it will fail to load. This happens because the CacheFlow will strip the "Connection: Upgrade" header and the "Upgrade: Websocket" header when sending the request upstream.

Websocket protocol not sent to ICAP ... - support.symantec.com

    https://support.symantec.com/us/en/article.TECH247199.html
    Websocket protocol not sent to ICAP for scanning from Symantec ProxySG ex: web.whatsapp.com

ProxySG First Steps: Streaming Media Solution

    https://origin-symwisedownload.symantec.com/resources/webguides/proxysg/security_first_steps/Content/PDFs/Control_Streaming_Solution.pdf
    ControllingStreamingMedia n Flashmedia(RTMP)usesport1935. n RealTimeStreamingProtocol(RTSP)usesport554. n MicrosoftMediaServer(MMS)usesport1755 ...

c# - WebSockets and a proxy - Stack Overflow

    https://stackoverflow.com/questions/9612690/websockets-and-a-proxy
    It turns out that the proxy we are using BlueCoat doesn't support WebSockets for the good old reason of "security" or the such. Even when going to my local address and the proxy gets in the way and prevents the use of sockets. Obviously if I bypass local addresses this will work except on (Automatically Detect)

How to allow WebSocket traffic with Web Gateway

    https://kc.mcafee.com/corporate/index?page=content&id=KB84052&actp=null&showDraft=false&locale=en_US&viewlocale=en_US
    Sep 20, 2019 · McAfee Web Gateway (MWG) used as proxy where client or web server wants to initiate or establish WebSocket connection.. With an explicit proxy, a client WebSocket request on port 80 contains an Upgrade: websocket header. MWG allows the establishment of a tunnel so communication between the client, MWG, and the webserver is established. To import the rule set: Log on to MWG.

WebSocket support in Azure Application Gateway Microsoft ...

    https://docs.microsoft.com/en-us/azure/application-gateway/application-gateway-websocket
    The following is a snippet of an httpListeners element from a sample template file. You would need both HTTP and HTTPS listeners to support WebSocket and secure WebSocket traffic. Similarly you can use the portal or Azure PowerShell to create an application gateway with listeners on port 80/443 to support WebSocket traffic.

Bluecoat proxy times out on certain https sites - Server Fault

    https://serverfault.com/questions/693375/bluecoat-proxy-times-out-on-certain-https-sites
    Again, this is very crazy. This seems to happen because of an odd interaction between Bluecoat's OS and (outdated) F5's used at the other end. More specifically, Bluecoat's TCP silly window syndrom (SWS) avoidance algorithm seems to trigger this:

766817 - websockets causing repeated auth prompts?

    https://bugzilla.mozilla.org/show_bug.cgi?id=766817
    BTW, I'm not sure exactly why Bluecoat says it doesn't > support websockets, the websocket echo demo works (I tried both SSL and > non-SSL to be sure). It probably says that because it doesn't support them transparently, but when configured to allow an explicit tunnel through the proxy it …

Using WebSockets and IE/Edge for C2 communications

    https://arno0x0x.wordpress.com/2017/11/10/using-websockets-and-ie-edge-for-c2-communications/
    Glad to introduce WSC2, C2 over WebSocket. But first, a bit of context... In the wake of my latest researches around various covert channels for C2 communications and/or payload delivery (DBC2, DNSDelivery, WebDavC2, WebDavDelivery) I decided to have a look at something I've always left on the side until now: WebSockets. The idea first came…



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