Problem :

I am under a proxy and I am pushing in to git successfully for quite a while. Now I am not able to push into git all of a sudden. I have set the RSA key and the proxy and double checked them, with no avail and git is throwing me the error shown in the title of the page.

Tags : git,ssh

For my case none of the suggested solutions worked so I tried to fix it myself and I got it resolved.

For me I am getting this error on my AWS EC2 UBUNTU instance, what I did to resolve it was to edit the ssh config (or add it if it does not exist).

sudo nano ~/.ssh/config

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And I added the following

Host github.com Hostname ssh.github.com Port 443

Then, run the command ssh -T [email protected] to confirm if the issue is fixed.

According to this

Sometimes, firewalls refuse to allow SSH connections entirely. If using HTTPS cloning with credential caching is not an option, you can attempt to clone using an SSH connection made over the HTTPS port. Most firewall rules should allow this, but proxy servers may interfere

Hopefully this helps anyone else who’s having the same issue I did.

The reason could be the firewall modification as you are under a network.(In which case they may deliberately block some ports) To double check if this is the reason … do

ssh -T [email protected]

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this should timeout. If that’s the case use http protocol instead of ssh this way just change your url in the config file to http. Here is how :-

git config -local -e

change entry of

url = [email protected]:username/repo.git

to

url = https://github.com/username/repo.git

Git provides a way to rewrite URLs using git config. Simply issue the following command:

git config -global url.”https://”.insteadOf git://

Now, as if by magic, all git commands will perform a substitution of git:// to https://

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source: git:// protocol blocked by company, how can I get around that?

inside the .ssh folder Create “config” file

Host github.com User git Hostname ssh.github.com PreferredAuthentications publickey IdentityFile ~/.ssh/id_rsa Port 443 Host gitlab.com Hostname altssh.gitlab.com User git Port 443 PreferredAuthentications publickey IdentityFile ~/.ssh/id_rsa

I faced the same problem and couldn’t find a working solution. I faced this problem while setting up a local server and the git couldn’t connect through my proxy network but my workstation could. This was the output when I ran the command ssh -vT [email protected]

[email protected]:~$ ssh -vT [email protected] OpenSSH_7.2p2 Ubuntu-4ubuntu2.8, OpenSSL 1.0.2g 1 Mar 2016 debug1: Reading configuration data /home/ubuntu/.ssh/config debug1: Reading configuration data /etc/ssh/ssh_config debug1: /etc/ssh/ssh_config line 19: Applying options for * debug1: Connecting to github.com [13.234.176.102] port 22.

So I tried using an SSH connection made over the HTTPS port by editing the config file ~/.ssh/config but to no avail.

Host github.com Hostname ssh.github.com Port 443

Finally, I found this article which solved and exposed the real problem.

# github.com Host github.com Hostname ssh.github.com ProxyCommand nc -X connect -x <PROXY-HOST>:<PORT> %h %p Port 443 ServerAliveInterval 20 User git

This is my config file and now git works perfectly well through ssh!