The DNS over HTTPS issue just highlights the need to secure Firefox and not accept some of Mozilla’s decisions that were made as defaults and to prevent employees from changing some settings. We planned on hardening Firefox in the Fall, but now we have to stop and try to sort things out because of business decisions being made by Mozilla that contradict previous statements made when the UK government was up in arms about the feature. The biggest issue I am having is that Firefox seems to not have much of a mindshare among security professionals so guidelines are very old and prior to updates being made.
From: Enterprise <[email protected]> On Behalf Of Philipp Madersbacher Sent: Monday, September 09, 2019 2:10 AM To: [email protected] Subject: Re: [Mozilla Enterprise] Firefox Configuration Confusion - Need to Secure Firefox Hello, If your main intent is to centrally manage/disable DoH in Firefox, you can easily do so through a GPO - the relevant links for this are: https://support.mozilla.org/en-US/kb/customizing-firefox-using-group-policy-windows<https://urldefense.proofpoint.com/v2/url?u=https-3A__support.mozilla.org_en-2DUS_kb_customizing-2Dfirefox-2Dusing-2Dgroup-2Dpolicy-2Dwindows&d=DwMFaQ&c=2WwxlqHD_9GeHFEUsOHZXg&r=a0pF-r4VjZCyzB4zxbRDcONPyw-KRRoDiBPd4lDRky8&m=YSYE8bKjUsrwFn2wb7ubiI8ztOenwjCu-N3yiFsGnbQ&s=TETBRIYboX4y5SL2wusf2SfRlSB0ZtrWP2eYeVLNyK0&e=> https://github.com/mozilla/policy-templates/blob/master/README.md#dnsoverhttps<https://urldefense.proofpoint.com/v2/url?u=https-3A__github.com_mozilla_policy-2Dtemplates_blob_master_README.md-23dnsoverhttps&d=DwMFaQ&c=2WwxlqHD_9GeHFEUsOHZXg&r=a0pF-r4VjZCyzB4zxbRDcONPyw-KRRoDiBPd4lDRky8&m=YSYE8bKjUsrwFn2wb7ubiI8ztOenwjCu-N3yiFsGnbQ&s=lXj7NF7fx9iOFesiOKH0L3xVGOOeKJVkJyvhoRA6wQQ&e=> No need to make the matter more complicated than it is ;-) Best regards Am So., 8. Sept. 2019 um 22:28 Uhr schrieb Eddie Rowe <[email protected]<mailto:[email protected]>>: Given Mozilla’s decision to turn on DNS over HTTPS we have to secure Firefox to disable this type of nonsense or remove it from every PC in the next two weeks. Chrome is configured through an easy to manage GPO which leverages other really smart people who have created a security baseline along with preconfigured GPOs, while Firefox does not seem to have this level of support. Assuming a person is new to Firefox, exactly what are we supposed to modify to setup things securely? I see references to things going into Mozilla.cfg, policies.json, GPO, autoconfig.js…I probably missed a file too. I see people helpfully answering a question and telling the person to go to https://developer.mozilla.org/en-US/Firefox/Enterprise_deployment<https://urldefense.proofpoint.com/v2/url?u=https-3A__developer.mozilla.org_en-2DUS_Firefox_Enterprise-5Fdeployment&d=DwMFaQ&c=2WwxlqHD_9GeHFEUsOHZXg&r=a0pF-r4VjZCyzB4zxbRDcONPyw-KRRoDiBPd4lDRky8&m=YSYE8bKjUsrwFn2wb7ubiI8ztOenwjCu-N3yiFsGnbQ&s=WRDFs4M7YKZFcSinJ03hmE5WtWHlSyqD1TBZyQi13GA&e=> for the answer to their question, but there are just more links there. I see people posting to not to bother with GPO because all the options are not there, but other say there are GPO settings that are no elsewhere… I see references that one thing is set one place, another place overrides… I see one document say the autoconfig.js file goes into the folder where Firefox is installed, but the same document says it does into a subfolder… I see references to setting preferences in the policies.json file, but I thought Mozilla.cfg was to be used for this? Finally I see mention that there are preferences that are set in the source code that are not exposed to about:config? Surely there is a simple one page document that walks you through this so we can spend a LIMITED amount of time sorting this out??? https://www.zdnet.com/article/mozilla-to-gradually-enable-dns-over-https-for-firefox-us-users-later-this-month/<https://urldefense.proofpoint.com/v2/url?u=https-3A__www.zdnet.com_article_mozilla-2Dto-2Dgradually-2Denable-2Ddns-2Dover-2Dhttps-2Dfor-2Dfirefox-2Dus-2Dusers-2Dlater-2Dthis-2Dmonth_&d=DwMFaQ&c=2WwxlqHD_9GeHFEUsOHZXg&r=a0pF-r4VjZCyzB4zxbRDcONPyw-KRRoDiBPd4lDRky8&m=YSYE8bKjUsrwFn2wb7ubiI8ztOenwjCu-N3yiFsGnbQ&s=7i5QWN9atfx6PeSqpjIEafCA9_XfYm4-BfDYkqpQMCY&e=> - Ready or not, here comes DNS over HTTPS to bypass all security you have using DNS to block dangerous sites. _______________________________________________ Enterprise mailing list [email protected]<mailto:[email protected]> https://mail.mozilla.org/listinfo/enterprise<https://urldefense.proofpoint.com/v2/url?u=https-3A__mail.mozilla.org_listinfo_enterprise&d=DwMFaQ&c=2WwxlqHD_9GeHFEUsOHZXg&r=a0pF-r4VjZCyzB4zxbRDcONPyw-KRRoDiBPd4lDRky8&m=YSYE8bKjUsrwFn2wb7ubiI8ztOenwjCu-N3yiFsGnbQ&s=tMC8gEZTwcn_xiV8uLROx7I0j8atw5AadKGwv8TOAOg&e=> To unsubscribe from this list, please visit https://mail.mozilla.org/listinfo/enterprise<https://urldefense.proofpoint.com/v2/url?u=https-3A__mail.mozilla.org_listinfo_enterprise&d=DwMFaQ&c=2WwxlqHD_9GeHFEUsOHZXg&r=a0pF-r4VjZCyzB4zxbRDcONPyw-KRRoDiBPd4lDRky8&m=YSYE8bKjUsrwFn2wb7ubiI8ztOenwjCu-N3yiFsGnbQ&s=tMC8gEZTwcn_xiV8uLROx7I0j8atw5AadKGwv8TOAOg&e=> or send an email to [email protected]<mailto:[email protected]> with a subject of "unsubscribe"
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