{"id":1151,"date":"2019-07-17T15:54:11","date_gmt":"2019-07-17T13:54:11","guid":{"rendered":"http:\/\/itsimple.info\/?p=1151"},"modified":"2019-07-17T16:09:51","modified_gmt":"2019-07-17T14:09:51","slug":"chrome-browser-can-not-find-chromecast-chromecast-ultra-on-local-network-with-fortigate-firewall","status":"publish","type":"post","link":"https:\/\/itsimple.info\/?p=1151","title":{"rendered":"Chrome Browser can not find Chromecast & ChromeCast Ultra on Local Network with Fortigate Firewall"},"content":{"rendered":"

\u00a0<\/p>\n

Recently I came Across wired problem, Laptop with google chrome can not find and cast to Chromecast dongle on our office meeting room although both devices were on the same network with the same IP range and I could ping the Chromecast IP ! It just didn\u2019t work \ud83d\ude41\u00a0 Cromecast ultra have wire connection as well, That didn\u2019t work as well.\u00a0 First to blame was the Fortigate firewall as it is was immediate suspect to block all kind of traffic (although it is on the same Subnet -> layer 2 communication ), This are the recommended setting on Fortigate for support in Chromecast ( https:\/\/kb.fortinet.com\/kb\/documentLink.do?externalID=FD40040<\/a> )\u00a0 :<\/p>\n

\n
\n
\n

The FortiGate needs to be configured to not adjust TTL:<\/p>\n

\n

config system settings<\/span><\/i>
\nset multicast-ttl-notchange enable<\/span><\/i>
\nend<\/span><\/i><\/p><\/blockquote>\n<\/div>\n

Multicast policies must be configured (this is where access can be restricted):<\/p>\n

\n

config firewall multicast-policy<\/span><\/i>
\nedit 1<\/span><\/i>
\nset srcintf \u201cchromecasttest\u201d<\/span><\/i>
\nset dstintf \u201cemployeeWifi\u201d<\/span><\/i>
\nset srcaddr \u201call\u201d<\/span><\/i>
\nset dstaddr \u201call\u201d<\/span><\/i>
\nnext<\/span><\/i>
\nedit 2<\/span><\/i>
\nset srcintf \u201cemployeeWifi\u201d<\/span><\/i>
\nset dstintf \u201cchromecasttest\u201d<\/span><\/i>
\nset srcaddr \u201call\u201d<\/span><\/i>
\nset dstaddr \u201call\u201d<\/span><\/i>
\nnext<\/span><\/i>
\nend<\/span><\/i><\/p><\/blockquote>\n<\/div>\n

With the above configured the Chromecast should be discovered by wireless\/wired clients on other Subnets.<\/p>\n<\/div>\n<\/blockquote>\n<\/div>\n

\u00a0For me that didn\u2019t work as well , To check if this was just a problem with chrome browser I have install VideoLAN as it have Chomecast Feature build-in, After installing VLC from\u00a0https:\/\/www.videolan.org\/<\/a>\u00a0 , you can see the option for casting video :<\/div>\n
<\/div>\n
\"\"<\/div>\n
<\/div>\n
And its works !!! yet from the chrome browser on the laptop it still didn\u2019t\u00a0 !!! Turn out Chrome browser only search for Chromecast on Private Networks IP\u2019s<\/a> . it is using RFC1918\/RFC4193<\/a> which meens:<\/div>\n

\u00a0<\/p>\n

<\/div>\n
<\/div>\n
\n\n\n\n\n\n\n
RFC1918 name<\/th>\nIP address range<\/th>\nNumber of addresses<\/th>\nLargest CIDR<\/a> block (subnet mask)<\/th>\nHost ID size<\/th>\nMask bits<\/th>\nClassful<\/a><\/i> description[Note 1]<\/a><\/sup><\/th>\n<\/tr>\n
24-bit block<\/td>\n10.0.0.0 \u2013 10.255.255.255<\/td>\n16777216<\/td>\n10.0.0.0\/8 (255.0.0.0)<\/td>\n24 bits<\/td>\n8 bits<\/td>\nsingle class A network<\/td>\n<\/tr>\n
20-bit block<\/td>\n172.16.0.0 \u2013 172.31.255.255<\/td>\n1048576<\/td>\n172.16.0.0\/12 (255.240.0.0)<\/td>\n20 bits<\/td>\n12 bits<\/td>\n16 contiguous class B networks<\/td>\n<\/tr>\n
16-bit block<\/td>\n192.168.0.0 \u2013 192.168.255.255<\/td>\n65536<\/td>\n192.168.0.0\/16 (255.255.0.0)<\/td>\n16 bits<\/td>\n16 bits<\/td>\n256 contiguous class C networks<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
<\/div>\n

As this was our office network with alot of VLAN\u2019s it was using different Subnet from the above there for google chrome broswer didn\u2019t find the Chromecast as it didn\u2019t search on that Subnet, you need to allow the browser to search on all the ip\u2019s of the computer:<\/p>\n

\n
\n
1. Ensure that you\u2019re on the latest version of the Chrome Browser.<\/a><\/div>\n
2. Open a new tab in Chrome.<\/div>\n
3.\u00a0Type or copy\/paste\u00a0chrome:\/\/flags\/#l<\/b>oad-media-router-component-extension<\/b>\u00a0into the address bar.<\/div>\n
\u00a04. Find\u00a0 \u201cConnect to Cast devices on all IP address\u201d and choose Enabled <\/strong>.<\/div>\n
5. Re-lunch Chrome.<\/div>\n<\/blockquote>\n<\/div>\n
\"\"<\/a><\/div>\n
<\/div>\n
<\/div>\n
\n
Your Chromecast & Cromecast Ultra should now be discovered by Your PC or Laptop<\/div>\n<\/div>\n
\n

Good Luck<\/h3>\n","protected":false},"excerpt":{"rendered":"

\u00a0 Recently I came Across wired problem, Laptop with google chrome can not find and cast to Chromecast dongle on our office meeting room although both devices were on the same network with the same IP range and I could ping the Chromecast IP ! It just didn\u2019t work \ud83d\ude41\u00a0 Cromecast ultra have wire connection […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4,12,14],"tags":[],"class_list":["post-1151","post","type-post","status-publish","format-standard","hentry","category-tech","category-tutorials","category-windows"],"_links":{"self":[{"href":"https:\/\/itsimple.info\/index.php?rest_route=\/wp\/v2\/posts\/1151","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/itsimple.info\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/itsimple.info\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/itsimple.info\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/itsimple.info\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1151"}],"version-history":[{"count":0,"href":"https:\/\/itsimple.info\/index.php?rest_route=\/wp\/v2\/posts\/1151\/revisions"}],"wp:attachment":[{"href":"https:\/\/itsimple.info\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1151"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/itsimple.info\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1151"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/itsimple.info\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1151"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}