[BackupPC-users] Web access restrictions and IPv6

In case anyone else has this problem....

I suspect a Win10 update changed the way my web client (Chrome) accesses myLinux Apache server, favoring IPv6 over IPv4. I'd originally configured itto allow connections from my LAN's IPv4 prefix and all worked fine. Thisweek (after a couple weeks of not checking) I found I couldn't connect. Itraced it down to the connection coming from my link local IPv6 address. SoI needed to add an extra Require stanza to my Apache config. If yourerror_log shows connections refused from addresses starting with fe80,you've run into this issue.

From /etc/httpd/conf.d/BackupPC.conf:


AuthType Basic
AuthUserFile /etc/BackupPC/apache.users
AuthName "BackupPC"

<IfModule mod_authz_core.c>
 # Apache 2.4
 <RequireAll>
   Require valid-user
   <RequireAny>
     Require local
        # allow from my LAN IPv4 block
     Require ip 10.0.0.0/8
        # ADD THIS for IPv6 link local connections!
     Require ip fe80::/16
   </RequireAny>
 </RequireAll>
</IfModule>


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