steve at mixmin.net
Wed Oct 5 09:21:46 UTC 2011
On Tue, Oct 04, 2011 at 02:12:29PM -0500, John F. Morse wrote:
> I have a user concerned about privacy, specifically his IP being displayed.
> After his request several years ago, I changed the
> "NNTP-Posting-Host" option in /etc/news/inn.conf to:
> addnntppostinghost: false
> That took care of one possible concern, but now X-Trace is the issue.
In Julien's reply he presents a good example of how to strip the X-Trace
header. You should also consider including either an Injection-Info or
NNTP-Posting-Host header so users and filtering software can link posts
to a common source. This doesn't have to be a real IP address or
hostname. A cryptographic hash is a good solution and can be salted
to preserve users' anonymity.
I'll publish an example of how to do it on my Cleanfeed FAQ page.
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