Can't establish a sftp connection with the finder

Hi, I'm trying to establish a sftp connection with the finder (using the "Connect to server" feature) between my (recently purchased) Mac Mini (mid 2011: i5, 2.3 GHz, 2 GB, running 10.7.3) and a Debian Testing box and I can't, I get the following error:
'There was a problem connecting to the server "ip.address"
This file server will not allow any additional users to log on. Try to connect again later.'
However if I try establishing a connection from the terminal (either ssh or sftp) it works flawlessly:
SSH:
victoria:~ RonIn$ ssh [email protected]
[email protected]'s password:
Linux clementine 3.0.0-1-486 #1 Sat Aug 27 15:56:48 UTC 2011 i686
The programs included with the Debian GNU/Linux system are free software;
the exact distribution terms for each program are described in the
individual files in /usr/share/doc/*/copyright.
Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
permitted by applicable law.
You have new mail.
Last login: Sat Apr 28 21:52:18 2012 from ukamy.local
ronin@clementine:~$
SFTP:
victoria:~ RonIn$ sftp [email protected]
[email protected]'s password:
Connected to ip.address.
sftp>
I've searched for a fix or alternative on the internet and I haven't found one that works; The one that keeps coming up is to try: "ftps" as the protocol instead of "sftp" with the remaining information the same (it doesn't work, it gets the same error message afterwards).
The IP address and login information works (corroborated by the fact that I can log in from the terminal from the Mac Mini) so the only issue is with the finder capabilities for establishing the connection. I have looked for apple related documentation or How Tos but I haven't found anything useful.
I don't want to use any third party app or tweak because of the sensitive information that is going to be transfered, I would like to be using strictly the tools from the OS.
If you need any more information please let me know, any help is deeply appreciated.

I have the same issue although i kind of fixed it. I have two admin accounts and one of the account's safari did the same thing as yours, except, it was the startpage and everypage i tried to visit. I reseted safari, as in the erase all data safari in the toolbar, safari-Reset Safari... But safari still didn't work. I logged out and went to my other account and opened safari. Now it works fine on both accounts. This meant safari had to logout before actually working better. I have this a few times these days.

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Hello anyone this might concern,
I'm having a problem with my week-old iPad 3 WiFi + 4G (although not 4G in Sweden, but anyway). When I yesterday (19th of June 2012) tried to hook my iPad to my mid 2011 iMac 27" wanting to synchronize it, I got a warning message that I've never seen before and not being known on the interwebs when searching for it.
Translated from Swedish it says: "iTunes couldn't connect to this iPad. Can't establish a secure connection with the device". No error code or anything. Just a window saying this and an OK button. Wierd I thought, tried to search for it and got hits that were similar but not in my opinion the same problem at all. Some people had problems a couple of years ago giving the similar error message, that had to do with the date and time not being the same on the iDevice as the computer hooking it up to. I checked my settings but everything checks out all right.
After a couple of tries of restarting both the iPad and the iMac, reinstalling iTunes etc etc I tried to connect my iPhone 4S. That went just fine, without a hitch. I was able to synchronize it, do whatever. So I took out my MBA 13" late 2010, connected the iPad to it and started iTunes - voilá it worked just fine! But still, the issue remains on the iMac today. I can't for the love of Steve understand what the problem is.
So, anyone out there sitting on an awesome fix?
Thanks,
Jacob

OK!
So I myself had this issue and have solved the issue. Let me recap:
1: Purchased a 13" Mac Book Pro
2:Already owned an Ipad that was syned with the PC I was previously using
3: When I connected my Ipad to the brand new Mac and opened Itunes was told (paraphrase) "Itunes can not connect to your Ipad...can not find secure connection
4: Called a multitude of Apple customer service folks who were really nice but couldn't help
          1) I tried different ports
          2) various apple connectors were used (not technical word but you know the cord that you use to connect your iPad to your cable with the usb)
          3) and on and on.....and no the date and time thing mentioned on many forums didn't work
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So what solved it:
1) Back up your iPad to iCloud (make sure it fully completes)
2) Go to General~Reset~Erase All Content and Settings
3) When iPad restores it will eventually get to a promp "restore from iCloud" say yes
4) At this point you are home sweet home...connect to itunes and Walla!
I also discovered how to sync Google calendars (if you have multiple like me) and google contacts to address. Holler at me if you need those too...don't waste your entire day like me. Peace Out!!

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Safari 8.0.3 Can't establish a secure connection to the server

I have a Macbook Air (early 2014) running OS X Yosemite 10.10.2
Safari is version 8.0.3
When accessing the websites "https://www.national-lottery.co.uk" and "https://portal.wmpfonline.com" I am given the below message:
Safari can't open the page "https://www.national-lottery.co.uk" because Safari can't establish a secure connection to the server "www.national-lottery.co.uk".
Initially when I bought my Macbook Air these sites worked perfectly. Also, when I clear website data it will work for a short period of time (roughly 2 minutes) but other times that makes no difference. I have tried using FireFox but I still have an issue accessing these sites. When in recovery mode both sites work perfectly fine without an issue.
Is anyone able to help me with this issue? I have been searching and searching for a week to find a solution to this problem.
Thank you all in advance

This could be a complicated problem to solve, as there are several possible causes for it.
Back up all data, then take each of the following steps that you haven't already taken. Stop when the problem is resolved.
Step 1
From the menu bar, select
           ▹ System Preferences... ▹ Date & Time
Select the Time Zone tab in the preference pane that opens and check that the time zone matches your location. Then select the Date & Time tab. Check that the data and time shown (including the year) are correct, and correct them if not.
Check the box marked
          Set date and time automatically
if it's not already checked, and select one of the Apple time servers from the menu next to it.
Step 2
Triple-click anywhere in the line below on this page to select it:
/System/Library/Keychains/SystemCACertificates.keychain
Right-click or control-click the highlighted line and select
          Services ▹ Show Info
from the contextual menu.* An Info dialog should open. The dialog should show "You can only read" in the Sharing & Permissions section.
Repeat with this line:
/System/Library/Keychains/SystemRootCertificates.keychain
If instead of the Info dialog, you get a message that either file can't be found, reinstall OS X.
*If you don't see the contextual menu item, copy the selected text to the Clipboard by pressing the key combination command-C. Open a TextEdit window and paste into it by pressing command-V. Select the line you just pasted and continue as above.
Step 3
Launch the Keychain Access application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad and start typing the name.
In the upper left corner of the window, you should see a list headed Keychains. If not, click the button in the lower left corner that looks like a triangle inside a square.
In the Keychains list, there should be items named System and System Roots. If not, select
          File ▹ Add Keychain
from the menu bar and add the following items:
/Library/Keychains/System.keychain
/System/Library/Keychains/SystemRootCertificates.keychain
Open the View menu in the menu bar. If one of the items in the menu is
          Show Expired Certificates
select it. Otherwise it will show
          Hide Expired Certificates
which is what you want.
From the Category list in the lower left corner of the window, select Certificates. Look carefully at the list of certificates in the right side of the window. If any of them has a blue-and-white plus sign or a red "X" in the icon, double-click it. An inspection window will open. Click the disclosure triangle labeled Trust to disclose the trust settings for the certificate. From the menu labeled
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select
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Close the inspection window. You'll be prompted for your administrator password to update the settings.
Now open the same inspection window again, and select
          When using this certificate: Use System Defaults
Save the change in the same way as before.
Revert all the certificates with non-default trust settings. Never again change any of those settings.
Step 4
Select My Certificates from the Category list. From the list of certificates shown, delete any that are marked with a red X as expired or invalid.
Export all remaining certificates, delete them from the keychain, and reimport. For instructions, select
          Help ▹ Keychain Access Help
from the menu bar and search for the term "export" in the help window. Export each certificate as an individual file; don't combine them into one big file.
Step 5
From the menu bar, select
          Keychain Access ▹ Preferences... ▹ Certificates
There are three menus in the window. Change the selection in the top two to Best attempt, and in the bottom one to CRL.
Step 6
Triple-click anywhere in the line of text below on this page to select it:
/var/db/crls
Copy the selected text to the Clipboard by pressing the key combination command-C. In the Finder, select
          Go ▹ Go to Folder...
from the menu bar and paste into the box that opens by pressing command-V. You won't see what you pasted because a line break is included. Press return.
A folder named "crls" should open. Move all the files in that folder to the Trash. You’ll be prompted for your administrator login password.
Restart the computer, empty the Trash, and test.
Step 7
Triple-click anywhere in the line below on this page to select it:
open -e /etc/hosts
Copy the selected text to the Clipboard by pressing the key combination command-C.
Launch the built-in Terminal application in the same way you launched Keychain Access.
Paste into the Terminal window by pressing command-V. I've tested these instructions only with the Safari web browser. If you use another browser, you may have to press the return key after pasting. A TextEdit window should open. At the top of the window, you should see this:
# Host Database
# localhost is used to configure the loopback interface
# when the system is booting. Do not change this entry.
127.0.0.1                              localhost
255.255.255.255          broadcasthost
::1                                        localhost
fe80::1%lo0                    localhost
If that's not what you see, post the contents of the window.

Safari can't open the page because safari can't establish a secure connection to the server

safari can't open the page because safari can't establish a secure connection to the server

No guarantee but try tapping Settings / Safari. Clear the History, Cookies, and Cache. Restart the iPad.
And try here.. Apple - Support - iPad - Wi-Fi

Haveing problems with Safari. It gives me an error message. Safari can't open the web page, because it can't establish a secure connection to the server. It only seams to have a problem on https sites. Any help would be apreciated.

Safari keeps giving and error message. " Safari can't open the web page( insert web page here) , because it can't establish a secure connetion to the server.
It only seams to have a problem with https sites.
Any help would be appreciated

The "s" in "https" indicates the site is a secure server--usually a site that will require a password. Connections to secure servers can be blocked by parental controls. Are you using any parental controls, either through OSX's settings (in System Preferences) or third party parental control software (such as Netnanny)? If so, check the settings to make sure they will allow the connection.

Safari can't establish a secure connection to the server

Hello,
I am wondering if someone can kindly help me solve the following problem? I have been trying to troubleshoot myself, but it seems that the problem persists.
Issue
I am having problems asscessing a wireless web login. The University that I attend allows students to access the wireless web by entering their login and password. When a new browser session is started, it automatically directs to the wiresless web log in. Initially, I had no problems and could easily access log into the site. Recently, I have had a issue where I try to log in and I get one of two error messages:
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Your login was processed successfully but a DNS Timeout occured. You will need to close and restart your browser in order to reach your orginal desitnation.
Notes:
Issue #1 happens the most often.
When issue #2 happens, I close my browser and open a new one but the page remains blank.
The wi-fi shows full strength and all others in the room have the ability to log on/off with no problems.
I have no problems with other secure sites when accessing from home wireless connection.
Troubleshooting
I have tried several things:
Date and Time - correct
Parental Controls - none are set
Keychain First Aid - no errors
Another User Account - I have tried using a different user account and the problem continues
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I should mention that at one point I had a scan/clean app installed. Before this app was installed it seems to work, however, I can't directly link the timing. I can't remember exactly which program it was as I have since removed it.
Can someone help me identify the issue? Is it a Certificate Authority or DNS issue? I would love to get this solved...
Thank you!

mdkat, I have encountered this problem in the past, and doing the following helped:
In the URL, simply lop off the "s" at the end of https:// and load the resulting URL.
Before you quite understandably jump on me to say that this action will result in a non-secure connection, confirm for yourself that this will result in the web page being reloaded with the proper https:// protocol with the secure SSL/TLS layer as well as the feel-good lock icon.
That is not to say this behaviour is correct. Obviously the warning you see is an indication Safari / Firefox and the site you're accessing are not communicating in some way, but fixing it is up to them.
Use as you see fit, as I say it works for me.
I should mention that at one point I had a scan/clean app installed. Before this app was installed it seems to work, however, I can't directly link the timing. I can't remember exactly which program it was as I have since removed it.
Good idea. Probably not related though, since I have never installed such things.
... and thank you for writing such a thoughtful and well-organized question!

I'm having a problem accessing Bupers Online using my CAC reader. I get an error that says safari can't establish a secure connection to the website. Does anyone know how to fix this?

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Safari "can't establish a secure connection to the server insert website "

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Hello CaptainSam88,
We would like to recommend you to download Rapport's updated version, as we suspect the problems you were experiencing have already been resolved.
You can download the latest version here:
http://download.trusteer.com/Gcur4Wtnu/leopard/Rapport.dmg
Please restart your browser after the installation completes and let us know if the problem persists.
If the problem persists, we would be very interested in fixing it.
Please note that we offer 24/7 free technical assistance.
Should you need additional assistance, feel free to contact us by submitting the following form: http://www.trusteer.com/support/submit-ticket
We also have helpful information available in our FAQ: http://www.trusteer.com/support/faq
Sincerely,
Ori Harel
Trusteer Technical Support

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HI and Welcome to Apple Discussions...
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Can't establish a sftp connection with the finder

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