Merci pour vos réponses, alors tout d’abord la connexion ne passe pas par le proxy, celui-ci intercepte uniquement les requêtes HTTP, par contre il passe par le routeur sur lequel est installé le proxy. Le routeur ne bloque rien du tout le temps de comprendre le problème. Ce serait une règle de routage ?
Alors je crois que l’authentification se fait par le compte Windows (je n’ai jamais eu à taper de mot de passe), quand tu parles d’un domaine de Windows, c’est à dire ? (je ne suis pas très à l’aise avec Win désolé
)
La connexion à mon compte windows ne nécessite pas l’accès au réseau si c’est ce que tu veux savoir.
Pour le relais DNS il suit les directives du /etc/resolv.conf sur le routeur, et l’interface connectée au réseau de l’entreprise est configurée en DHCP donc le DNS doit être fourni par le serveur DHCP de l’entreprise.
netstat sur le client Outlook :
Proto Adresse locale Adresse distante État
TCP 192.168.0.111:49183 XPRINTSERVER:epmap ESTABLISHED
TCP 192.168.0.111:49184 XPRINTSERVER:epmap ESTABLISHED
TCP 192.168.0.111:50394 X_VIRUS:8078 ESTABLISHED
TCP 192.168.0.111:50438 courriel:epmap TIME_WAIT
TCP 192.168.0.111:50448 XPRINTSERVER:49156 TIME_WAIT
TCP 192.168.0.111:50453 lga15s45-in-f0:https TIME_WAIT
TCP 192.168.0.111:50455 XPRINTSERVER:49156 TIME_WAIT
TCP 192.168.0.111:50460 lga15s45-in-f0:https TIME_WAIT
TCP 192.168.0.111:50462 XPRINTSERVER:49156 TIME_WAIT
TCP 192.168.0.111:50467 courriel:41163 TIME_WAIT
TCP 192.168.0.111:50468 courriel:41163 TIME_WAIT
TCP 192.168.0.111:50469 courriel:41163 TIME_WAIT
TCP 192.168.0.111:50470 courriel:41163 TIME_WAIT
TCP 192.168.0.111:50471 courriel:41163 TIME_WAIT
TCP 192.168.0.111:50472 courriel:41163 TIME_WAIT
TCP 192.168.0.111:50473 lga15s45-in-f2:https TIME_WAIT
TCP 192.168.0.111:50474 courriel:41163 TIME_WAIT
TCP 192.168.0.111:50475 courriel:41163 TIME_WAIT
TCP 192.168.0.111:50476 courriel:41163 TIME_WAIT
TCP 192.168.0.111:50477 courriel:41163 TIME_WAIT
TCP 192.168.0.111:50478 courriel:41163 TIME_WAIT
TCP 192.168.0.111:50479 courriel:41163 TIME_WAIT
TCP 192.168.0.111:50480 courriel:41163 TIME_WAIT
TCP 192.168.0.111:50482 XPRINTSERVER:49156 TIME_WAIT
TCP 192.168.0.111:50485 XPRINTSERVER:microsoft-ds ESTABLISHED
TCP 192.168.0.111:50486 courriel:epmap ESTABLISHED
TCP 192.168.0.111:50487 courriel:41218 TIME_WAIT
TCP 192.168.0.111:50488 courriel:41218 TIME_WAIT
TCP 192.168.0.111:50489 courriel:41218 TIME_WAIT
TCP 192.168.0.111:50490 courriel:41163 TIME_WAIT
TCP 192.168.0.111:50491 courriel:41163 TIME_WAIT
TCP 192.168.0.111:50492 courriel:41163 TIME_WAIT
Je comprends pas tout bien ^^
dump eth0 : interface reliée au réseau de l’entreprise, configurée en DHCP, j’ai remplacé le domaine de l’entreprise par mondomaine.fr :
09:30:16.948057 ARP, Request who-has exchangesrv.mondomaine.fr tell sto2035.mondomaine.fr, length 46
09:30:19.661963 ARP, Request who-has sto8521.mondomaine.fr tell exchangesrv.mondomaine.fr, length 46
09:30:24.703461 IP squidtest.mondomaine.fr.50941 > exchangesrv.mondomaine.fr.loc-srv: Flags [S], seq 3650870318, win 8192, options [mss 1460,nop,wscale 8,nop,nop,sackOK], length 0
09:30:24.703828 ARP, Request who-has squidtest.mondomaine.fr tell exchangesrv.mondomaine.fr, length 46
09:30:24.703839 ARP, Reply squidtest.mondomaine.fr is-at 00:1c:f0:c8:5f:50 (oui Unknown), length 28
09:30:24.703924 IP exchangesrv.mondomaine.fr.loc-srv > squidtest.mondomaine.fr.50941: Flags [S.], seq 1032314278, ack 3650870319, win 8192, options [mss 1460,nop,wscale 8,nop,nop,sackOK], length 0
09:30:24.704227 IP squidtest.mondomaine.fr.50941 > exchangesrv.mondomaine.fr.loc-srv: Flags [.], ack 1, win 256, length 0
09:30:24.704935 IP squidtest.mondomaine.fr.50941 > exchangesrv.mondomaine.fr.loc-srv: Flags [P.], seq 1:117, ack 1, win 256, length 116
09:30:24.705079 IP exchangesrv.mondomaine.fr.loc-srv > squidtest.mondomaine.fr.50941: Flags [P.], seq 1:85, ack 117, win 256, length 84
09:30:24.705810 IP squidtest.mondomaine.fr.50941 > exchangesrv.mondomaine.fr.loc-srv: Flags [P.], seq 117:273, ack 85, win 256, length 156
09:30:24.705907 IP exchangesrv.mondomaine.fr.loc-srv > squidtest.mondomaine.fr.50941: Flags [.], ack 273, win 256, length 0
09:30:24.705994 IP exchangesrv.mondomaine.fr.loc-srv > squidtest.mondomaine.fr.50941: Flags [P.], seq 85:237, ack 273, win 256, length 152
09:30:24.706862 IP squidtest.mondomaine.fr.50942 > exchangesrv.mondomaine.fr.41218: Flags [S], seq 2110085796, win 8192, options [mss 1460,nop,wscale 8,nop,nop,sackOK], length 0
09:30:24.706961 IP exchangesrv.mondomaine.fr.41218 > squidtest.mondomaine.fr.50942: Flags [S.], seq 4031305549, ack 2110085797, win 8192, options [mss 1460,nop,wscale 8,nop,nop,sackOK], length 0
09:30:24.707263 IP squidtest.mondomaine.fr.50942 > exchangesrv.mondomaine.fr.41218: Flags [.], ack 1, win 256, length 0
09:30:24.707734 IP squidtest.mondomaine.fr.50942 > exchangesrv.mondomaine.fr.41218: Flags [F.], seq 1, ack 1, win 256, length 0
09:30:24.707800 IP exchangesrv.mondomaine.fr.41218 > squidtest.mondomaine.fr.50942: Flags [.], ack 2, win 256, length 0
09:30:24.707839 IP exchangesrv.mondomaine.fr.41218 > squidtest.mondomaine.fr.50942: Flags [F.], seq 1, ack 2, win 256, length 0
09:30:24.708027 IP squidtest.mondomaine.fr.50942 > exchangesrv.mondomaine.fr.41218: Flags [.], ack 2, win 256, length 0
09:30:24.725410 IP squidtest.mondomaine.fr.50941 > exchangesrv.mondomaine.fr.loc-srv: Flags [P.], seq 273:429, ack 237, win 255, length 156
09:30:24.725597 IP exchangesrv.mondomaine.fr.loc-srv > squidtest.mondomaine.fr.50941: Flags [P.], seq 237:389, ack 429, win 256, length 152
09:30:24.726674 IP squidtest.mondomaine.fr.50943 > exchangesrv.mondomaine.fr.41218: Flags [S], seq 1033915011, win 8192, options [mss 1460,nop,wscale 8,nop,nop,sackOK], length 0
09:30:24.726771 IP exchangesrv.mondomaine.fr.41218 > squidtest.mondomaine.fr.50943: Flags [S.], seq 2370839339, ack 1033915012, win 8192, options [mss 1460,nop,wscale 8,nop,nop,sackOK], length 0
09:30:24.726927 IP squidtest.mondomaine.fr.50943 > exchangesrv.mondomaine.fr.41218: Flags [.], ack 1, win 256, length 0
09:30:24.727222 IP squidtest.mondomaine.fr.50943 > exchangesrv.mondomaine.fr.41218: Flags [F.], seq 1, ack 1, win 256, length 0
09:30:24.727288 IP exchangesrv.mondomaine.fr.41218 > squidtest.mondomaine.fr.50943: Flags [.], ack 2, win 256, length 0
09:30:24.727320 IP exchangesrv.mondomaine.fr.41218 > squidtest.mondomaine.fr.50943: Flags [F.], seq 1, ack 2, win 256, length 0
09:30:24.727682 IP squidtest.mondomaine.fr.50943 > exchangesrv.mondomaine.fr.41218: Flags [.], ack 2, win 256, length 0
09:30:24.932657 IP squidtest.mondomaine.fr.50941 > exchangesrv.mondomaine.fr.loc-srv: Flags [.], ack 389, win 255, length 0
09:30:25.150836 IP squidtest.mondomaine.fr.50941 > exchangesrv.mondomaine.fr.loc-srv: Flags [P.], seq 429:585, ack 389, win 255, length 156
09:30:25.151054 IP exchangesrv.mondomaine.fr.loc-srv > squidtest.mondomaine.fr.50941: Flags [P.], seq 389:541, ack 585, win 256, length 152
09:30:25.151997 IP squidtest.mondomaine.fr.50944 > exchangesrv.mondomaine.fr.41163: Flags [S], seq 2905075665, win 8192, options [mss 1460,nop,wscale 8,nop,nop,sackOK], length 0
09:30:25.152121 IP exchangesrv.mondomaine.fr.41163 > squidtest.mondomaine.fr.50944: Flags [S.], seq 1870696732, ack 2905075666, win 8192, options [mss 1460,nop,wscale 8,nop,nop,sackOK], length 0
09:30:25.152313 IP squidtest.mondomaine.fr.50944 > exchangesrv.mondomaine.fr.41163: Flags [.], ack 1, win 256, length 0
09:30:25.152642 IP squidtest.mondomaine.fr.50944 > exchangesrv.mondomaine.fr.41163: Flags [F.], seq 1, ack 1, win 256, length 0
09:30:25.152711 IP exchangesrv.mondomaine.fr.41163 > squidtest.mondomaine.fr.50944: Flags [.], ack 2, win 256, length 0
09:30:25.152742 IP exchangesrv.mondomaine.fr.41163 > squidtest.mondomaine.fr.50944: Flags [F.], seq 1, ack 2, win 256, length 0
09:30:25.153070 IP squidtest.mondomaine.fr.50944 > exchangesrv.mondomaine.fr.41163: Flags [.], ack 2, win 256, length 0
09:30:25.168226 IP squidtest.mondomaine.fr.50941 > exchangesrv.mondomaine.fr.loc-srv: Flags [P.], seq 585:741, ack 541, win 254, length 156
09:30:25.168324 IP exchangesrv.mondomaine.fr.loc-srv > squidtest.mondomaine.fr.50941: Flags [.], ack 741, win 256, length 0
Dump sur eth1, l’interface branchée à mon LAN, configurée statiquement en temps que passerelle (192.168.0.254/24) :
09:30:24.703405 IP 192.168.0.111.50941 > exchangesrv.mondomaine.fr.loc-srv: Flags [S], seq 3650870318, win 8192, options [mss 1460,nop,wscale 8,nop,nop,sackOK], length 0
09:30:24.703934 IP exchangesrv.mondomaine.fr.loc-srv > 192.168.0.111.50941: Flags [S.], seq 1032314278, ack 3650870319, win 8192, options [mss 1460,nop,wscale 8,nop,nop,sackOK], length 0
09:30:24.704218 IP 192.168.0.111.50941 > exchangesrv.mondomaine.fr.loc-srv: Flags [.], ack 1, win 256, length 0
09:30:24.704918 IP 192.168.0.111.50941 > exchangesrv.mondomaine.fr.loc-srv: Flags [P.], seq 1:117, ack 1, win 256, length 116
09:30:24.705089 IP exchangesrv.mondomaine.fr.loc-srv > 192.168.0.111.50941: Flags [P.], seq 1:85, ack 117, win 256, length 84
09:30:24.705775 IP 192.168.0.111.50941 > exchangesrv.mondomaine.fr.loc-srv: Flags [P.], seq 117:273, ack 85, win 256, length 156
09:30:24.705918 IP exchangesrv.mondomaine.fr.loc-srv > 192.168.0.111.50941: Flags [.], ack 273, win 256, length 0
09:30:24.706004 IP exchangesrv.mondomaine.fr.loc-srv > 192.168.0.111.50941: Flags [P.], seq 85:237, ack 273, win 256, length 152
09:30:24.706840 IP 192.168.0.111.50942 > exchangesrv.mondomaine.fr.41218: Flags [S], seq 2110085796, win 8192, options [mss 1460,nop,wscale 8,nop,nop,sackOK], length 0
09:30:24.706969 IP exchangesrv.mondomaine.fr.41218 > 192.168.0.111.50942: Flags [S.], seq 4031305549, ack 2110085797, win 8192, options [mss 1460,nop,wscale 8,nop,nop,sackOK], length 0
09:30:24.707255 IP 192.168.0.111.50942 > exchangesrv.mondomaine.fr.41218: Flags [.], ack 1, win 256, length 0
09:30:24.707725 IP 192.168.0.111.50942 > exchangesrv.mondomaine.fr.41218: Flags [F.], seq 1, ack 1, win 256, length 0
09:30:24.707808 IP exchangesrv.mondomaine.fr.41218 > 192.168.0.111.50942: Flags [.], ack 2, win 256, length 0
09:30:24.707846 IP exchangesrv.mondomaine.fr.41218 > 192.168.0.111.50942: Flags [F.], seq 1, ack 2, win 256, length 0
09:30:24.708021 IP 192.168.0.111.50942 > exchangesrv.mondomaine.fr.41218: Flags [.], ack 2, win 256, length 0
09:30:24.725373 IP 192.168.0.111.50941 > exchangesrv.mondomaine.fr.loc-srv: Flags [P.], seq 273:429, ack 237, win 255, length 156
09:30:24.725606 IP exchangesrv.mondomaine.fr.loc-srv > 192.168.0.111.50941: Flags [P.], seq 237:389, ack 429, win 256, length 152
09:30:24.726655 IP 192.168.0.111.50943 > exchangesrv.mondomaine.fr.41218: Flags [S], seq 1033915011, win 8192, options [mss 1460,nop,wscale 8,nop,nop,sackOK], length 0
09:30:24.726779 IP exchangesrv.mondomaine.fr.41218 > 192.168.0.111.50943: Flags [S.], seq 2370839339, ack 1033915012, win 8192, options [mss 1460,nop,wscale 8,nop,nop,sackOK], length 0
09:30:24.726920 IP 192.168.0.111.50943 > exchangesrv.mondomaine.fr.41218: Flags [.], ack 1, win 256, length 0
09:30:24.727216 IP 192.168.0.111.50943 > exchangesrv.mondomaine.fr.41218: Flags [F.], seq 1, ack 1, win 256, length 0
09:30:24.727295 IP exchangesrv.mondomaine.fr.41218 > 192.168.0.111.50943: Flags [.], ack 2, win 256, length 0
09:30:24.727327 IP exchangesrv.mondomaine.fr.41218 > 192.168.0.111.50943: Flags [F.], seq 1, ack 2, win 256, length 0
09:30:24.727676 IP 192.168.0.111.50943 > exchangesrv.mondomaine.fr.41218: Flags [.], ack 2, win 256, length 0
09:30:24.932620 IP 192.168.0.111.50941 > exchangesrv.mondomaine.fr.loc-srv: Flags [.], ack 389, win 255, length 0
09:30:25.150775 IP 192.168.0.111.50941 > exchangesrv.mondomaine.fr.loc-srv: Flags [P.], seq 429:585, ack 389, win 255, length 156
09:30:25.151065 IP exchangesrv.mondomaine.fr.loc-srv > 192.168.0.111.50941: Flags [P.], seq 389:541, ack 585, win 256, length 152
09:30:25.151969 IP 192.168.0.111.50944 > exchangesrv.mondomaine.fr.41163: Flags [S], seq 2905075665, win 8192, options [mss 1460,nop,wscale 8,nop,nop,sackOK], length 0
09:30:25.152131 IP exchangesrv.mondomaine.fr.41163 > 192.168.0.111.50944: Flags [S.], seq 1870696732, ack 2905075666, win 8192, options [mss 1460,nop,wscale 8,nop,nop,sackOK], length 0
09:30:25.152305 IP 192.168.0.111.50944 > exchangesrv.mondomaine.fr.41163: Flags [.], ack 1, win 256, length 0
09:30:25.152630 IP 192.168.0.111.50944 > exchangesrv.mondomaine.fr.41163: Flags [F.], seq 1, ack 1, win 256, length 0
09:30:34.316810 IP 192.168.0.111.50941 > exchangesrv.mondomaine.fr.loc-srv: Flags [P.], seq 897:1053, ack 845, win 253, length 156
09:30:34.317229 IP exchangesrv.mondomaine.fr.loc-srv > 192.168.0.111.50941: Flags [P.], seq 845:997, ack 1053, win 256, length 152
09:30:34.318107 IP 192.168.0.111.50950 > exchangesrv.mondomaine.fr.41163: Flags [S], seq 2923932170, win 8192, options [mss 1460,nop,wscale 8,nop,nop,sackOK], length 0
09:30:34.318271 IP exchangesrv.mondomaine.fr.41163 > 192.168.0.111.50950: Flags [S.], seq 1830616235, ack 2923932171, win 8192, options [mss 1460,nop,wscale 8,nop,nop,sackOK], length 0
09:30:34.318361 IP 192.168.0.111.50950 > exchangesrv.mondomaine.fr.41163: Flags [.], ack 1, win 256, length 0
09:30:34.318755 IP 192.168.0.111.50950 > exchangesrv.mondomaine.fr.41163: Flags [F.], seq 1, ack 1, win 256, length 0
09:30:34.318850 IP exchangesrv.mondomaine.fr.41163 > 192.168.0.111.50950: Flags [.], ack 2, win 256, length 0
09:30:34.318901 IP exchangesrv.mondomaine.fr.41163 > 192.168.0.111.50950: Flags [F.], seq 1, ack 2, win 256, length 0
09:30:34.319134 IP 192.168.0.111.50950 > exchangesrv.mondomaine.fr.41163: Flags [.], ack 2, win 256, length 0
Vous voyez quelque chose d’anormal ?