NTLM (NT LAN Manager) is a suite of Microsoft security protocols that provides authentication, integrity, and confidentiality to users.

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Squid3 + HTTPS Authentication issue

I've successfully setup Squid3 to work as a transparent proxy for HTTP and HTTPS, installed the CA on the machines. Everything works OK, but there is this corporation site I work for where Squid does ...
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16 views

How to set “Negotiate Seal” in NTLMSSP_AUTH?

not sure if this is right stackexchange site to ask this, but here it goes. I have 2 servers (win 2003 and 2012) trying to do NTLM authentication with a UNIX box (with apache web server) with the ...
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1answer
28 views

Determine usage of UPN for logon inside MS AD forest / domain

maybe somebody can give me a hint on this. I am evaluating the prerequisites for changing all (human) user's UPN in a large Microsoft AD environment to the recommended MS format (aligned with the ...
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18 views

NTLM authentication not working following server reboot

I have IIS 6.1 on Windows Server 2008 SP1. There is one web application which has only Windows Authentication enabled. This has just one provider: NTLM. When I works, it works fine - until the server ...
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43 views

Vagrant behind NTLM proxy on windows - guest unable to connect to the host proxy

I'm on a Windows machine behind a corporate NTLM proxy and I need to vagrant up a VM from the given Vagrantfile. I've read a few things on this topic: ...
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1answer
30 views

Exchange 2007 RPC over HTTPS, basic auth, password prompt bypassed by clicking 'need password'.. desired behavior?

I can't handle the incessant password prompting anymore.. Our Outlook installations prompt for a password after the comps wake from sleep and/or when changing between wired/wireless. Outlook DOES ...
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29 views

stunnel with ntlm Proxy-Authenticate: NTLM authorization request rejected

My stunnel setup doesn't work through a http proxy with ntlm authentication, the stunnel returns an error message: Proxy-Authenticate: NTLM authorization request rejected Whereas the wireshark ...
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5 views

Squid : different acl for different kind of authentication

I am using a 2.7 Squid stable 9 with NTLM authentication. But with some tools (like adobe cloud), the connection use Basic auth param, which is not configured in my squid.conf. So I would like to ...
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24 views

Squid with NTLM auth behind Netscaler

my task is implementing a squid proxy that allow all my authenticated (windows AD) internal users to surf internet without any credential request (pop-up). Plus, i created two squid nodes and put ...
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15 views

Is it possible to bypass NTLM authentication for server applications?

I have a client who has an on-site legacy system. The system is secured with NTLM authentication, I believe it is running within IIS. I also have an application running on AWS, also Windows Server, ...
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57 views

haproxy anonymous frontend, authorized backend with NTLM

Need to provide an anonymous readonly access to an svn repository AFAIK, haproxy cannot auth on backend by itself. There's a working configuration for haproxy with basic auth. How to migrate it to ...
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23 views

using FTP over proxy Squid with NTLM auth

I have a Squid 2.7 STABLE9 proxy on a Debian and I have allow 80, 443 & 21 port to my user (user have windows PC). When a user go throught my proxy, he have to authenticate himself with NTLM ...
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20 views

Apache NTLM not authenicating domain username/password.

I have a centos box and I am trying to setup NTLM authenication for apache. I have the linux box on the AD domain already and able to get user and group info using the wbinfo command. I have the ...
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1answer
20 views

Why is IIS asking for NTLM over and over

When running a website localy on IIS every request requires NTLM authentication over again. When running on server it's not as bad, but still requests more than once for a batch of requests all used ...
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152 views

RDP error “The function requested is not supported” after enabling NLA

I'm trying to RDP into one of my servers, which as Network Level Authentication Enabled as well as NTLMv2 being forced. This worked fine until the server had to reboot for updates. Now, I cannot RDP ...
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1answer
63 views

NTLM on a Load Balanced Environment

We have a Netscaler VPX that load balances HTTP requests to 3 IIS services on 3 Windows servers. Authentication is set to "Windows Authentication" but because our environment isn't set up for Kerberos ...
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1answer
101 views

Why Squid ntlm_auth works only when “cache_effective_group root”

I have Debian 8 Jessie with Samba configured as AD member server. Samba+Winbind works perfectly: I can create shares and assign rights for AD users; getent passwd shows both local and AD users, etc. ...
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1answer
97 views

How to resolve 401 Unauthorized failures on intranet pages with IIS and Active Directory

I'm attempting allow/restrict website intranet users access based on Active Directory permissions. I thought we'd reached our objective (authentication without domain sign-on prompt) until I ...
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1answer
77 views

RDP client error - An authentication error has occured (0x609)

I have a computer named ws24 (192.168.1.168) and another named srvPPassTest2. I have written a program running on ws24 that is an "RDP proxy". It accepts connections from RDP clients on port 7070 ...
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64 views

Squid authentication helpers

I set up squid with authentication helper following along the line the guide here http://www.freesoftwaremagazine.com/articles/authentication_with_squid the only difference is that my users together ...
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212 views

Office 2013 and squid whith NTLM authenticate doesn't work

I have a Squid 2.7STABLE9 on a Debian and everything works except the office 2013 pack : Word, Excel, Outlook ... For all, I made a rule on Squid conf as it explaine here and it look like it doesn't ...
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323 views

Unable to configure CNTLM

I am setting up a proxy server on my linux system using CNTLM. I have edited the cntlm.conf file and made the following changes- # # Cntlm Authentication Proxy Configuration # # NOTE: all values ...
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1answer
802 views

How to decode traffic as NTLM protocol in Wireshark?

I'm trying to debug NTLM authentication issue. One of my ideas was to capture the network traffic and look thougth it. In my case NTLM authentication is going over non-stardart port (6901). Of course, ...
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1answer
194 views

Active Directory / Freeradius / ntlm_auth / mail attribute

I am currently configuring a linux server with Freeradius to have our clients authenticate against our Active Directory for our WiFi-network. The goal is to have our users use the e-mail address that ...
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3answers
1k views

Check Primary Authentication Protocol for Active Directory (NTLM or Kerberos?) [duplicate]

How can I check, from a client machine (in Global Group)(also is local admin), whether the domain controller is authenticating my login request to the domain using NTLM or Kerberos? I know that ...
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75 views

What are the implications of removing Negotiate as a Windows Authentication provider?

A single user of our internal website is getting the following message when using IE9 to access one of our internal websites hosted on IIS 7.5: 401 - Unauthorized: Access is denied due to invalid ...
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260 views

How to configure Apache NTLM in order to get REMOTE_USER?

No matter where I put %{REMOTE_USER}, I got NULL. Can you please tell me how I can configure NTLM Apache in order to get REMOTE_USER ? RewriteEngine On #RewriteCond %{LA-U:REMOTE_USER} ...
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2answers
4k views

March 10th Patch Tuesday appears to cause SQL Server client connection problems

Since applying the full set of patches on a Win 7.1 Pro desktop and a Windows 2012 R2 Datacenter Azure server running SQL 2014, SQL Management Studio (2008 and 2014 versions) won't connect to the SQL ...
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172 views

Squid NTLM authentication started to fail

I have a squid server authenticating against a Win2k3 AD. The authentication is failing since today and I'm sure it is something on the windows side because on the linux machine there were no ...
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149 views

[cntlm]: How to configure cntlm for multiple users?

I configure cntlm for one user and it works well (firefox, yum...) but I would like to configure cntlm for multiple users. The service cntlmd is active. # chkconfig --list cntlmd cntlmd ...
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138 views

SSRS Returning 401 Unauthorised Error when calling web service

We have two web servers that call the SSRS service to query the reports held there. Both servers are set up identically but while one works the other returns a 401 unauthorised exception when trying ...
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110 views

Each request for a NTLM authenticated page served by an Apache webservice is doing CAN transactions

I develop a TYPO3 application which runs in a companies intranet. It is build on a CENTOS 6 platform with a MySQL database (5.1.16) and an Apache webserver (Version 2.2.15). For authentication we use ...
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271 views

Configure ntlm_auth for offline operations

We currently have a NAC server set up to authenticate against a Samba4 AD using the ntlm_auth utility and would like to make it more tolerant to network outages. Currently, when the NAC loses ...
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2answers
207 views

Change Mozilla settings globally on internal network

We have a network in our company and I want to set network.automatic-ntlm-auth.allow-non-fqdn parameter to True in Mozilla FireFox for all clients,how can I do this?
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486 views

FreeRADIUS using Active Directory integration broken without any traces

I've a FreeBSD 10.0 server running FreeRADIUS 3 and things got broken without any apparent reason. I'm using Winbind from Samba4 to authenticate with ntlm_auth. I've done some debug to solve the ...
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1answer
612 views

Apache - Replace Apache::AuthenNTLM with Kerberos (mod_auth_kerb)

Within an intranet system on Solaris we currently use perls Apache2::AuthenNTLM module to authenticate with a Win 2k3 doman server, so we can access the user ID of the person browsing the site. ...
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1k views

Cross-server NTLM authentication failing

I think this issue has less to do with software development and more to do with general network configuration, so I'm posting the question here initially. I have an MVC4 application hosted in IIS 7.5 ...
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2answers
4k views

NetApp erroring with: STATUS_NOLOGON_WORKSTATION_TRUST_ACCOUNT

Since a sitewide upgrade to Windows 7 on desktop, I've started having a problem with virus checking. Specifically - when doing a rename operation on a (filer hosted) CIFS share. The virus checker ...
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1answer
4k views

“Anonymous Logon” vs “NTLM V1” What to disable?

Working on getting rid of NTLM V1 logins all together in the AD environment; found lot of events, almost all of them from the user "Anonymous Logon"(4624 events) other 1(4624 events) percent coming ...
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385 views

Apache authentication - Exclude paths from <Directory> defined authentication

I currently use the following directives to apply NTLM authentication to our Drupal installation, but I need to exclude some paths. I've tried adding directives for the specific paths I want to ...
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2answers
5k views

Apache2 authentication NTLM without prompted semi Basic auth type

I succesfully configured ntlm authentication. Unfortunately config allows semi basic authorization. For example when I'm using tortoise svn1.8.4(with serf access lib), chrome or IE web browsers, they ...
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132 views

Proxy hosted in IIS with NTLM, how can I enable single sign on?

I have a forward proxy hosted in IIS with windows authentication enabled. Firefox is set up to use the proxy. Problem is, I don't know what to do with network.automatic-ntlm-auth.trusted-uris. ...
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2answers
2k views

NTLM through proxy server

We use squid as a HTTP proxy (if needed I can modify it's configuration). We want to access a website that uses ntlm for authentication When we go on the website through squid we see a blank page ...
3
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1answer
518 views

Does IIS NTLM/Kerberos authentication still work with an offline domain controller?

We have multiple IIS instances spread across remote regional branches. Each IIS instance (v.7.5) is running the same application and authenticates its users with Integrated Authentication (NTLM in the ...
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1answer
98 views

Why there are three rounds of message exchanges for integrated windows authentication for IE

According to the result monitored by fiddler, there are totally 3 handshakes for integrated windows authentication for IE. GET /home - 401 Unauthorized WWW-Authenticate: Negotiate, NTLM GET ...
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1answer
379 views

Improving Windows Authentication performance on IIS

We're struggling with performance issues with a ASP.NET MVC site that is using Windows Authentication. Response time is very slow on the first request to the site when the user is being ...
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0answers
3k views

What does AuthForwardServerList do?

A bit of context, we have several Windows 7 clients connected to an LDAP backed Samba PDC. We also have a Zimbra 8 server that authenticates off the same LDAP. When users logon to the Windows 7 ...
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127 views

NTLM Only working from some clients

I have a Windows test app, using .net4, which consumes a remote asp.net web service hosted under IIS6. The client app has hard-coded Windows credentials which it passes to the IIS box. The IIS box ...
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1answer
1k views

IIS 7.5 - Authentication works with IP Adress but NOT with FQDN

I'm using an IIS Server and run into the following problem: Using Internet Explorer, I type http://1.2.3.4/mySite/ and everything works fine, it uses my Windows credentials. When I try ...
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1answer
2k views

Squid Proxy and AD auth generating errors on Squid startup

I need some advice with an error i am getting when trying to start Squid which has integrated NTLM / AD auth setup. heres the back story: I've followed this guide word for word on the setup, ...