Authentication is the process of proving your identity to a computer. It differs from authorization, which is the process of granting certain privileges to someone.

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219
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10answers
210k views

How to tell git which private key to use?

ssh has the -i option to tell which private key file to use when authenticating: -i identity_fileSelects a file from which the identity (private key) for RSA or DSA authentication is read.  ...
134
votes
11answers
143k views

Too many authentication failures for *username*

I have a hostgator account with ssh access enabled and when trying to upload the generated .pub key file with this command: rsync -av -e "ssh -p2222" /home/user/.ssh/key.pub username@111.222.33.44:....
45
votes
5answers
26k views

How do I configure SSH so it dosen't try all the identity files automatically?

I have been putting my ssh identity files inside my ~/.ssh/ folder. I have probably about 30 files in there. When I connect to servers, i will specify the identity file to use, with something like ...
24
votes
4answers
22k views

Connecting Adium to Google Talk with a 2-factor authentication account isn’t working

Anyone else having this problem? After turning on 2-factor authentication on my Google Account I stopped being able to log in through Adium (Mac IM client that uses Pidgin’s libpurple for IM). ...
21
votes
6answers
74k views

Why does Internet Explorer keep asking me for NTLM credentials in an intranet zone?

Long text, sorry for that. I'm trying to be as specific as possible. I'm on Windows 7 and I experience a very frustrating Internet Explorer 8 behavior. I'm in a company LAN with some intranet servers ...
20
votes
4answers
3k views

*nix equivalent of Active Directory? [on hold]

I'm looking for some terms to help me google further information. How does a set of *nix machines store network usernames and passwords? That is, if I want to set up a central server and manage ...
20
votes
3answers
24k views

Windows Domain Authentication with Firefox

We have many internal web sites on our domain: a.blah.com b.bhah.com c.blah.com IE authenticates automatically using the currently signed in domain user but fire fox pops up a login box, sometimes ...
19
votes
2answers
15k views

Does Firefox support wildcards in NTLM / Negotiate URI's for autologin?

Following this question about Windows Domain Authentication with Firefox, does FF support using wildcards in the URI's? I'm not finding anything where it mentions support either way.
18
votes
1answer
468 views

Any way to access StackExchange from a text only browser?

I have a very slow computer and spend most of my time without a graphical environment. StackExchange doesn't let me log in using Links saying that my "request could not be completed because it looks ...
16
votes
3answers
55k views

Passing UNC username and password within a UNC path

Is it possible to pass the UNC username and password within a UNC path? Similar to how FTP and SMB support this: smb://user:pass@destination.com/share ftp://user:pass@destination.com/share I am ...
12
votes
7answers
9k views

Why is MAC-based authentication insecure?

Most wireless routers can use MAC-based authentication as part of their overall security scheme. It seems like a good idea, but I've heard that it is very ineffective, because it's easy to spoof MAC ...
12
votes
3answers
32k views

How do I use my keyfile to sftp transfer data from one server to another

I cant scp, the other server only takes sftp connections. Currently, I am trying to do sftp jay@server.name.com:/files> put -r ~/ -i keyname does not work, just resolves with illegal option -- ...
12
votes
1answer
18k views

Let Firefox automatically accept “authentication required” dialogue

When accessing sites at my work I get various "authentication required" dialogues, i.e. from the intranet proxy server. Firefox does remember the username/password but I have to click the dialogue all ...
12
votes
1answer
696 views

eCatcher login error (peer not authenticated)

I can no longer login in Talk2M using my good old eCatcher 3.x or 4.x. I receive one of these error messages: Written out: Additional info I/O error while communicating with HTTP server: sun....
12
votes
4answers
37k views

Why is Google Chrome not saving proxy username/password?

Is there a way to have Chrome save username/password for proxy servers, so I don't have to type them in every time I start it up?
11
votes
3answers
23k views

Windows Authentication with Google Chrome

Does Google Chrome work with Windows Authentication? We have internal websites that use Windows authentication and I'd like Chrome to not have to prompt me every time I access those sites for ...
11
votes
1answer
40k views

How can I make subversion reset the stored passwords/users and remember my authentication credentials?

Background: I used to have everything working just fine on my fresh install: $ svn co https://domain:443/ test1 Error validating server certificate for 'https://domain:443': - The certificate is not ...
11
votes
3answers
4k views

Google chrome proxy authentication dialogue timeout

I am on a network that uses LDAP proxy for authentication based on a username and password. Whenever I start Google Chrome, it pops up with a proxy authentication dialogue, but the dialogue ...
10
votes
4answers
76k views

How do I add a password to a batch file to automatically authenticate?

I'm trying to run xcopy commands in a batch file as an administrator. Is this the correct command and how can I pass the password into it? runas /noprofile /user:Domain Name\user account
9
votes
4answers
24k views

How to create a Windows 7 fileshare that requires NO authentication

This almost seems like a silly question, and yet I can't find the combination to keep the safe open. I am trying to create a fileshare on a Windows 7 Pro workstation. I want NO authentication prompts....
9
votes
1answer
8k views

Pushing a local repo to a GitHub repo which has dual-factor authentication

I'm trying to push code in my local repo (on an OS X 10.8.5 system with the GitHub app installed and logged into) to a repo I created on GitHub via their website, using the command line. Oddly, when I ...
9
votes
2answers
17k views

SSH still asks for password after setting up key based authentication

I have successfully created a key based auth for root user from my A machine to my B machine. Now, I created a new user on B machine, the same as on A machine, let's call him USER. I created a home ...
8
votes
4answers
9k views

Putty Authentication on Mac OS X?

On my Windows development machine, I use Pageant with a secret key to authenticate with an SVN server. I want to know: what's the equivalent Mac process for doing this? Pageant isn't ported, how do I ...
8
votes
3answers
1k views

Three-step authentication?

I'm using Ubuntu. I'm just wondering if it's possible to have libpam-google-authenticator (which lets you log in using a code generated by your phone) AND certificate authentication set up to work ...
8
votes
5answers
9k views

SSH Private Key File Won't Work (Permissions Error)

I keep an SSH private key file on a separate USB thumb drive (encrypted), but when I try to use it to connect to my remote host I get an error: @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@...
8
votes
1answer
10k views

IIS 7.5 Windows Authentication Not Working in Chrome

On a new installation of IIS 7.5 I have setup Windows Authentication on my Intranet. The providers I have used are 'NTLM' and negotiate in that order. This works fine in IE and Firefox but in chrome ...
7
votes
4answers
14k views

How to authenticate to a VM using Vagrant up?

Authentication failure during Vagrant Up, while vagrant ssh and ssh vagrant@localhost -p2222 works I would like to execute a shell script using Vagrant at boot. Vagrant is unable to Authenticate, ...
7
votes
1answer
3k views

ssh -o PreferredAuthentications: What's the difference between “password” and “keyboard-interactive”?

Both PreferredAuthentications=password and PreferredAuthentications=keyboard-interactive would prompt for the password, so what's the difference between them? I Google'd with the keywords ssh ...
7
votes
2answers
5k views

Chrome - Why am I automatically authenticated to a web app even after clearing browser cookies?

I am accessing a web application using Chrome. If I sign out of the app and clear all Chrome history/cookies/etc (even Flash cookies which are now handled by Chrome in the same Clear History area) ...
7
votes
1answer
5k views

How do I configure NTLM authentication in Firefox on Linux?

Our IT department have NTLM deployed through the intranet servers. I've set network.automatic-ntlm-auth.trusted-uris value in Firefox on some of the Windows machines and that works fine. However ...
7
votes
1answer
2k views

Metro Apps on Windows 8 aren't working with static IP behind auth proxy

In Windows 8 Professional, Metro Apps and Windows Update do not work with static IP settings behind authenticated proxy server. They work with DHCP on the same proxy settings (we have DHCP for wifi ...
7
votes
2answers
1k views

Full Disk Encryption with Two-factor Authentication for Ubuntu: How?

Background Information I'm a Linux newbie recently weaned off Windows. I'm currently using Ubuntu 11.04 without full disk encryption. Only my home directory is encrypted, and with eCryptFS. Lately, I'...
6
votes
3answers
6k views

Hotel like Wifi manager

Does anyone knows which are these systems that manages paid wifi networks and some hotels and airports? Even better, would anyone know a open/free project that would do or could be adapted to that ...
6
votes
3answers
13k views

How to delete specific HTTP authentication credentials from Safari (for Windows)?

I use Safari on a Windows XP machine at work. To access the corporate intranet website, Safari asks me the first time to enter my credentials, using a default HTTP(?) authentication dialog box. On ...
6
votes
3answers
56k views

Email service without SSL authentication

Does anyone know an email service that doesn't require the SSL or TLS authentication to send mails throught smtp? Edit: I don't know almost anythings about smtpm servers; the PC of my customer is ...
6
votes
2answers
12k views

How to make Internet Explorer automatically login in a certain domain

In IE, when I want to access a SharePoint site, I'm asked for username/password (obviously). Is there a way to make IE know that, when I access a domain XXX, it should use certain credentials? Even ...
6
votes
3answers
2k views

Firefox password manager - multiple logins for HTTP authentication

When you're prompted to login to a site using HTTP authentication (the kind with the pop-up box requesting username/password), Firefox's password manager populates it with only the first stored ...
6
votes
1answer
2k views

SQL Server ODBC authentication errors

I'm trying to connect to a SQL Server 2008 database from a 3rd-party application through an ODBC connection. I am having success when the ODBC is set up with Windows Authentication but not when it's ...
5
votes
8answers
16k views

How can I provide a SSH password to SVN on the command line?

In my case, I want to do a SVN checkout: svn co svn+ssh://10.106.191.164/home/svn/shproject However, I want to have the password in that one line, so that it doesn't pop up.
5
votes
3answers
3k views

How can I restrict users from accessing the Internet, but still connect to my router?

I know I can secure my WiFi via MAC address restrictions and WPA encryption. I have a WiFi router without access restrictions and an Internet connection. I want to configure the router so that it ...
5
votes
1answer
138 views

Is there any way to create a non-keyboard user authentication method on Windows 8?

Now that Windows 8 supports touch screens, is there some third-part software or even an embedded function on Windows 8 that enables a non-keyboard based method (gestural for example) to unlock a ...
5
votes
1answer
3k views

What is a GPG with “authenticate” capability used for?

GnuPG subkeys can be flagged with three kind of capabilities: Sign, Encrypt and Authenticate. While the first two actions are widely used and documented, the authenticate action is somehow mysterious....
5
votes
2answers
901 views

Crontab Error Emails: Set Sender to Root Using -f

For a crontab entry in this format, */1 * * * * /usr/bin/php /app/<userid>/command --flag='value' I see this message emailed to <userid>@host (and view via mail) at one per minute: ...
5
votes
2answers
2k views

Where to supply Authentication details to the Network Proxy (Central Proxy) on Fedora?

My system is running Fedora 16 and I live in a campus where we use LAN to connect to the Internet. And for this, we use an http proxy with authentication (username & password). I tried putting ...
5
votes
0answers
472 views

Multiple http auth details on the same site + chrome save password functionality, is there any way to handle this case?

Google Chrome seems to be saving passwords on a per site basis, but I'm developing a site where I'd like to have different http authentication details depending on the directory accessed AND have ...
4
votes
3answers
5k views

What is PAM (Pluggable Authentication Modules) in Linux?

What is PAM (Pluggable Authentication Modules) in Linux? I know it is used for authentication, but what good is this? How does it work? I am using CentOS 6.2.
4
votes
3answers
9k views

Mirroring a web site behind a login form

Short version: I'd like to snap an offline copy of a URL which includes the full HTML+CSS+JS+images and saves them locally, keeping the structure and file content of the original site. I'm having ...
4
votes
4answers
738 views

Problem with shared ssh keys

Following the process I've used in other environments, I've tried setting-up shared keys between my Mac and my CentOS 4 webserver. I've seen the same problem with my older Ubuntu 7.10 workstation ...
4
votes
2answers
22k views

Windows WiFi with WPA2-Enterprise + EAP-TTLS + PAP

The task is to teach Windows (XP,Vista,7) how to connect to a WiFi with WPA2-Enterprise using EAP-TTLS and PAP. So far I know the following solutions: SecureW2 Personal Client 2.X: Vendor declared ...
4
votes
1answer
2k views

Keep GnuPG credentials cached for entire user session

GnuPG can, with gpg-agent, cache access to a private key. How can I keep that cache active for the entire user session? When I unlock the key for gpg-agent, it only stays cached for a limited time. ...