There are two sorts of compression - TLS and HTTP. It is recommended not to compress the TLS traffic (as CRIME can then be used to guess cookies etc) - compresses the whole response. But compressing HTTP traffic is OK - unless there is some secret stored in the body of the HTML page {it only compresses the HTML of the page} -----Original Message----- From: Antony Stone <Antony.Stone@xxxxxxxxxxxxxxxxxxxxx> Sent: 10 October 2020 21:01 To: users@xxxxxxxxxxxxxxxx Subject: Re: To Gzip or not? [EXT] On Saturday 10 October 2020 at 20:23:46, Tom Browder wrote: > I've been looking at ways to speed up my web services using > https://urldefense.proofpoint.com/v2/url?u=https-3A__webpagetest.org&d > =DwICbA&c=D7ByGjS34AllFgecYw0iC6Zq7qlm8uclZFI0SqQnqBo&r=oH2yp0ge1ecj4o > DX0XM7vQ&m=wVQFv3p3IiMCFYbxf3xWL1HmlN3ZkoCLaTAM8DZEBss&s=tshPsEQ7bksjr > YsoZ14lId3gKNLPIe14r5lCkak7ujU&e= for analysis. One thing I've been > reading about is using mod_deflate to compress certain files but keep > seeing the warnings Which warnings? Where? > about using compression with https due to certain known threats. What threats? > In my searches so far I've not found anything saying that threat has > been mitigated. Does anyone here use compression with TLS or have any > current advice about the issue? Can you point us at any document about what this "issue" is, so that we know what "threat" you're concerned about? Antony. -- Was ist braun, liegt ins Gras, und raucht? Ein Kaminchen... Please reply to the list; please *don't* CC me. --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscribe@xxxxxxxxxxxxxxxx For additional commands, e-mail: users-help@xxxxxxxxxxxxxxxx -- The Wellcome Sanger Institute is operated by Genome Research Limited, a charity registered in England with number 1021457 and a company registered in England with number 2742969, whose registered office is 215 Euston Road, London, NW1 2BE. --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscribe@xxxxxxxxxxxxxxxx For additional commands, e-mail: users-help@xxxxxxxxxxxxxxxx