Super User
Super User

Questions tagged [authentication]

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.

825 questions
1179
votes
25 answers

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.  The default is ~/.ssh/identity for protocol…
jrdioko
  • 13,195
307
votes
15 answers

Too many authentication failures for *username*

I have a hostgator account with ssh access enabled. 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:.ssh/authorized_keys I keep getting: Received…
Gabriel
  • 3,705
219
votes
9 answers

How do I configure SSH so it doesn'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 ssh -i ~/.ssh/client1-identity…
cwd
  • 18,788
  • 43
  • 123
  • 162
147
votes
5 answers

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. With SSH's agent, I enter the passphrase one time…
bignose
  • 3,325
66
votes
2 answers

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 PreferredAuthentications password keyboard-interactive…
su.root
  • 1,080
34
votes
4 answers

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 -- i.
Jay
  • 577
32
votes
6 answers

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 trying to get a (non domain PC) service access to a…
Kvad
  • 551
31
votes
2 answers

Private/Public Key Authentication for Windows Remote desktop

Does anything exist for Windows RDP (Remote Desktop Protocol) that is similar to SSH (in Linux) Public/Private key authentication (Instead of leaving normal password authentication open)? I'm finding conflicting answers to this topic around the…
Lightning77
  • 673
30
votes
5 answers

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). Obviously you need to generate an application-specific…
Robin Whittleton
  • 501
30
votes
2 answers

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.
squillman
  • 8,551
26
votes
1 answer

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. You can make such key only using editing a…
Claudio Floreani
  • 882
23
votes
6 answers

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 and a proxy for connecting with the outside…
Tomalak
  • 1,173
22
votes
3 answers

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 multiple times per page load if assets on…
Danielb
  • 629
21
votes
1 answer

Why is the SSH server asking for a password even if I specify a valid key?

I can't set up password-less login on a Ubuntu server. Even if I specify a key, I get prompted for a password. The same key can correctly log me in another server. So I don't think it's a permission issue on the client. Server output: root@server:~#…
Sifro
  • 329
19
votes
5 answers

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) and then re-access the site, I am automatically…
Howiecamp
  • 1,598
1
2 3
…
54 55