Non riesco ad accedere a Drupal mentre il mio cookie di sessione è stato eliminato?

Question

Sto usando Drupal 7 e ho una sterlina che corre davanti alla vernice per HTTPS. Posso sfogliare il sito tramite HTTPS, ma non riesco ad accedere - ogni volta che lo faccio, il server restituisce un errore 403 proibito. Qualche idea su cosa sta causando questo? Immagino che qualcosa potrebbe dover essere cambiato in settings.php, ma non sono sicuro.

Output da Firebug:

Post utente

Intestazioni di risposta

Accept-Ranges   bytes
Age 0
Cache-Control   no-cache, must-revalidate, post-check=0, pre-check=0
Connection  keep-alive
Content-Length  0
Content-Type    text/html; charset=UTF-8
Date    Tue, 09 Oct 2012 17:49:08 GMT
Etag    "1349804948"
Expires Sun, 19 Nov 1978 05:00:00 GMT
Last-Modified   Tue, 09 Oct 2012 17:49:08 +0000
Location    https://drupal.domain.com/user/2
Server  Apache
Set-Cookie SESSe15687525d17b8ec181665a71c88775c=EttXyyPvqESdU4RapW7xZkrRagGNHgRH5I9P6x0yRRE; expires=Thu, 01-Nov-2012 21:22:28 GMT; path=/; domain=.drupal.domain.com; httponly SSESSe15687525d17b8ec181665a71c88775c=mAdWa_a_OvcIIoWBuiVbLqFJzwyHiukfd_xBOVz_eaQ; expires=Thu, 01-Nov-2012 21:22:28 GMT; path=/; domain=.drupal.domain.com; secure; HttpOnly
Via 1.1 varnish
X-Drupal-Cache  MISS
X-Varnish   2081364495

Richiedi intestazioni

Accept  text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Encoding gzip, deflate
Accept-Language en-us,en;q=0.5
Connection  keep-alive
Cookie  has_js=1; __utma=194497400.1529654640.1349804906.1349804906.1349804906.1; __utmb=194497400.3.10.1349804906; __utmc=194497400; __utmz=194497400.1349804906.1.1.utmcsr=(direct)|utmccn=(direct)|utmcmd=(none)
DNT 1
Host    drupal.domain.com
Referer https://drupal.domain.com/user
User-Agent  Mozilla/5.0 (Windows NT 5.1; rv:15.0) Gecko/20100101 Firefox/15.0.1

Ottieni 2

Intestazioni di risposta

HTTP/1.1 403 Forbidden
Server: Apache
Expires: Sun, 19 Nov 1978 05:00:00 GMT
Last-Modified: Tue, 09 Oct 2012 17:49:08 +0000
Cache-Control: public, max-age=300
Etag: "1349804948-1"
Content-Language: en
X-Generator: Drupal 7 (http://drupal.org)
Set-Cookie: SSESSe15687525d17b8ec181665a71c88775c=deleted; expires=Thu, 01-Jan-1970 00:00:01 GMT; path=/; domain=.drupal.domain.com; secure; httponly
SESSe15687525d17b8ec181665a71c88775c=deleted; expires=Thu, 01-Jan-1970 00:00:01 GMT; path=/; domain=.drupal.domain.com; httponly
Vary: Cookie,Accept-Encoding
Content-Encoding: gzip
Content-Type: text/html; charset=utf-8
Content-Length: 8916
Accept-Ranges: bytes
Date: Tue, 09 Oct 2012 17:49:09 GMT
X-Varnish: 2081364496
Age: 0
Via: 1.1 varnish
Connection: keep-alive

Richiedi intestazioni

GET /user/2 HTTP/1.1
Host: drupal.domain.com
User-Agent: Mozilla/5.0 (Windows NT 5.1; rv:15.0) Gecko/20100101 Firefox/15.0.1
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-us,en;q=0.5
Accept-Encoding: gzip, deflate
DNT: 1
Connection: keep-alive
Referer: https://drupal.domain.com/user
Cookie: has_js=1; __utma=194497400.1529654640.1349804906.1349804906.1349804906.1; __utmb=194497400.3.10.1349804906; __utmc=194497400; __utmz=194497400.1349804906.1.1.utmcsr=(direct)|utmccn=(direct)|utmcmd=(none); SESSe15687525d17b8ec181665a71c88775c=EttXyyPvqESdU4RapW7xZkrRagGNHgRH5I9P6x0yRRE; SSESSe15687525d17b8ec181665a71c88775c=mAdWa_a_OvcIIoWBuiVbLqFJzwyHiukfd_xBOVz_eaQ