DirectAccess with Computer Certificates and SHA512 algorithms

-

hi,

i not sure if right forum.

i have finished test lab deployment of direct access, , have noticed 1 interesting issue trying confirm.

in lab deployed pki part of infrastructure quite while ago, typical deployment, offline root , online issuing authority. configured use sha512 signature , signature hash algorithms. selection might seem paranoid, has never been issue clients have been windows 7 or higher , have full support.

i deployed direct access, , using default settings, appears working correctly, clients connect.

i switched requiring computer certificates, issued certificate da server , test clients based upon "computer" template.

clients no longer connect. looking @ diagnostic logs direct access appeared tunnels not being established correctly. looking @ get-daconnectivitystatus, there issue present, sub status error referring errors remote network authentication. nothing appeared out of ordinary in client diagnostic logs or event viewer.

i went looking on server, nothing appeared @ first point problem, on inspection of system event log, there errors in regards tls:

'an tls 1.2 connection request recieved remote client application, none of cipher suites supported client application supported server. ssl connection request has failed'

so looked around , didn't find out there, couldn't see obvious, occurred me using sha512 in our certificates. fired new ca in test environment, time accepting defaults. reissued certificates computer certificates da server , test clients, , connecting.

does know of incompatibility? documented anywhere? known anyone? has seen well?

any more info great.

kieran jacobsen


hi,

base on experience, information happened when use server supported cipher suite (the client support more cipher suite version, server relatively pool).

the detail of server 2008 support cipher suite version please refer following kb:

 schannel cipher suites in windows vista

http://msdn.microsoft.com/en-us/library/windows/desktop/ff468651(v=vs.85).aspx

more information:

test lab guide: troubleshoot directaccess

http://www.microsoft.com/en-us/download/details.aspx?id=22210

hope helps.

alex lv



Windows Server  >  Network Infrastructure Servers



Comments

Post a Comment

Popular posts from this blog

Round Robin is killing performance on our network

-
Image
we had 2 windows 2003 domain controllers @ our data center dns , 1 domain controller @ our large remote office no dns. finished replacing 3 domain controllers windows 2012 r2 dc's, each of have dns installed , configured. we're having issues servers @ our data center resolving names using dns server @ remote office due appears round robin dns lookups. is there suggested way force servers , workstations @ data center use domain controllers @ location dns resolution , servers , workstations @ remote office use domain controller @ location dns resolution? thanks in advance assistance, dan hi dbetanco, >we're having issues servers @ our data center resolving names using dns server @ remote office due appears round robin dns lookups. round robin specific record query, example, in dns zone has 3 records: www.test.com 1.1.1.1 www.test.com 2.2.2.2 www.test.com 3.3.3.3 then if query nslookup www.test.com  three times, first time order is: 1.1....
Read more

WMI Repository 4GB limit - Win 2003 Ent Question

-
Image
hi there, i've question size limit on wmi repository (being 4gb). if isn't correct place post this, apologies , can let me know wheere post this? i've come across few servers running citrix have reached limit on wmi repository size , need install ibm director agent hw monitoring. during install getting 'out of disk space' errors entered in mofcomp.log: "(mon apr 02 04:10:36 2012.172843) : error occurred while processing item 4: (mon apr 02 04:10:36 2012.172843) : error number: 0x8004103b, facility: wmi description: out of disk space" when error number http://msdn.microsoft.com/en-us/library/windows/desktop/aa394559%28v=vs.85%29.aspx i see this: wbem_e_out_of_disk_space 2147749947 (0x8004103b) disk out of space or 4 gb limit on wmi repository (cim repository) size reached. windows xp , windows 2000/nt:   disk out of space. i'm wondering if there reason why limit set 4gb or can increase needs be? can't seem find reas...
Read more

Change home folder default permission?

-
i have searched on , can't seem find similar trying do. using windows server 2003 active directory. when create new user account on domain, use profile tab specify home directory user. when user logs in first time, active directory creates folder in specified path. working correctly. problem gives user full control on folder. has caused lot of problems because "clever" users have discovered thay can change permission on folder or subfolders beneath it. because don't want staff looking @ "sensitive" files. of course doesn't work since can take ownership of file , give myself permissions. causes trouble failed backups, inability scan these folders viruses, migration new storage etc. on occasion 1 of these users call me , ask file or folder restored, , @ point discover not have backup of files , cannot restore them. give them lecture, have on 2500 users, , can't talk them all. right have create account , login teh folder created, go take away full contr...
Read more