60 lines
2.3 KiB
Markdown
60 lines
2.3 KiB
Markdown
---
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title: 'Error: Bad file number'
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intro: This error usually means you were unable to connect to the server. Often this is caused by firewalls and proxy servers.
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redirect_from:
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- /articles/error-bad-file-number
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- /github/authenticating-to-github/error-bad-file-number
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- /github/authenticating-to-github/troubleshooting-ssh/error-bad-file-number
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versions:
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fpt: '*'
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ghes: '*'
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ghec: '*'
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topics:
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- SSH
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---
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When running remote Git commands or SSH, your connection might time out:
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```shell
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$ ssh -vT git@{% data variables.product.product_url %}
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> OpenSSH_8.1p1, LibreSSL 2.7.3
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> debug1: Connecting to {% data variables.product.product_url %} [207.97.227.239] port 22.
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> debug1: connect to address 207.97.227.239 port 22: Connection timed out
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> ssh: connect to host {% data variables.product.product_url %} port 22: Connection timed out
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> ssh: connect to host {% data variables.product.product_url %} port 22: Bad file number
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```
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## Solving the issue
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### Use HTTPS
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Often, the simplest solution is to simply avoid SSH entirely. Most firewalls and proxies allow HTTPS traffic without issue. To take advantage of this, change [the remote URL](/get-started/git-basics/about-remote-repositories) you're using:
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```shell
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$ git clone https://{% data variables.product.product_url %}/USERNAME/REPO-NAME.git
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> Cloning into 'reponame'...
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> remote: Counting objects: 84, done.
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> remote: Compressing objects: 100% (45/45), done.
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> remote: Total 84 (delta 43), reused 78 (delta 37)
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> Unpacking objects: 100% (84/84), done.
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```
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### Test from a different network
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If you can connect the computer to another network that doesn't have a firewall, you can try testing your SSH connection to {% data variables.product.github %}. If everything works as it should, contact your network administrator for help on changing the firewall settings to allow your SSH connection to succeed.
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{% ifversion fpt or ghec %}
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### Using SSH over the HTTPS port
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If using HTTPS is not an option, and your firewall admin refuses to allow SSH connections, you can try using [SSH over the HTTPS port](/authentication/troubleshooting-ssh/using-ssh-over-the-https-port) instead.
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{% endif %}
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{% ifversion fpt or ghec %}
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## Further reading
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* [AUTOTITLE](/get-started/using-github/troubleshooting-connectivity-problems)
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{% endif %}
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