33 lines
4.2 KiB
Markdown
33 lines
4.2 KiB
Markdown
---
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layout: post
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title: "SSH Tricks"
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date: 2019-02-13
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comments: true
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tags: ssh, shell, needs-js
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---
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<blockquote class="twitter-tweet" data-lang="en"><p lang="en" dir="ltr">SSH is omnipresent, its the standard in connecting to a remote machine, even windows is shipping it default (so I am told). <br>These are some less known (IMHO), but cool SSH features. Best way to read more is to read relevant section in *man ssh*</p>— Dhananjay Balan (@notmycommit) <a href="https://twitter.com/notmycommit/status/1096069717666742274?ref_src=twsrc%5Etfw">February 14, 2019</a></blockquote>
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<blockquote class="twitter-tweet" data-conversation="none" data-lang="en"><p lang="en" dir="ltr">If you have to ssh to machines only accessible from another control machine, checkout *-J* flag. "ssh -J control_machine actual_machine"</p>— Dhananjay Balan (@notmycommit) <a href="https://twitter.com/notmycommit/status/1096069718665019392?ref_src=twsrc%5Etfw">February 14, 2019</a></blockquote>
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<blockquote class="twitter-tweet" data-conversation="none" data-lang="en"><p lang="en" dir="ltr">GnuPG keys can also be your ssh key: There is no reason to maintain two sets of keys, you can use your gpg keys are ssh keys. Arch wiki has a nice explanation: <a href="https://t.co/sk5tub39Ad">https://t.co/sk5tub39Ad</a></p>— Dhananjay Balan (@notmycommit) <a href="https://twitter.com/notmycommit/status/1096069719319367681?ref_src=twsrc%5Etfw">February 14, 2019</a></blockquote>
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<blockquote class="twitter-tweet" data-conversation="none" data-lang="en"><p lang="en" dir="ltr">If you do use gpg keys, you can store them on a <a href="https://twitter.com/Yubico?ref_src=twsrc%5Etfw">@Yubico</a> "Yubikey" (<a href="https://t.co/at94SwI1E1">https://t.co/at94SwI1E1</a>) or any supported hardware key(like <a href="https://twitter.com/nitrokey?ref_src=twsrc%5Etfw">@nitrokey</a>). This ensures your keys are accessible only when they are plugged in, quite useful if you move around computers a lot.</p>— Dhananjay Balan (@notmycommit) <a href="https://twitter.com/notmycommit/status/1096069720162357249?ref_src=twsrc%5Etfw">February 14, 2019</a></blockquote>
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<blockquote class="twitter-tweet" data-conversation="none" data-lang="en"><p lang="en" dir="ltr">You can shorten your complicated ssh commands by adding an entry in *~/.ssh/config* file. see *man ssh_config*</p>— Dhananjay Balan (@notmycommit) <a href="https://twitter.com/notmycommit/status/1096069721135480833?ref_src=twsrc%5Etfw">February 14, 2019</a></blockquote>
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<blockquote class="twitter-tweet" data-conversation="none" data-lang="en"><p lang="en" dir="ltr">If you want to lend your SSH key to a host you ssh to (to ssh from the guest to somewhere else, git clone from github on guest etc) - checkout the *-A* flag.</p>— Dhananjay Balan (@notmycommit) <a href="https://twitter.com/notmycommit/status/1096069721902993409?ref_src=twsrc%5Etfw">February 14, 2019</a></blockquote>
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<blockquote class="twitter-tweet" data-conversation="none" data-lang="en"><p lang="en" dir="ltr">SSH can act as a web proxy to fetch requests via your server. Quite handy as a quick and dirty vpn. Emphasis on quick n dirty - don't use this to replace a regular vpn.<a href="https://t.co/1VWG9rT70U">https://t.co/1VWG9rT70U</a></p>— Dhananjay Balan (@notmycommit) <a href="https://twitter.com/notmycommit/status/1096069722733510658?ref_src=twsrc%5Etfw">February 14, 2019</a></blockquote>
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<blockquote class="twitter-tweet" data-conversation="none" data-lang="en"><p lang="en" dir="ltr">SSH can create a reverse shell](<a href="https://t.co/JQlxzi1ocJ">https://t.co/JQlxzi1ocJ</a>), useful if you want to expose a machine behind NAT outside.</p>— Dhananjay Balan (@notmycommit) <a href="https://twitter.com/notmycommit/status/1096069723509411841?ref_src=twsrc%5Etfw">February 14, 2019</a></blockquote>
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<blockquote class="twitter-tweet" data-conversation="none" data-lang="en"><p lang="en" dir="ltr">I am sure SSH can do much more! Whats your nifty less known SSH feature?</p>— Dhananjay Balan (@notmycommit) <a href="https://twitter.com/notmycommit/status/1096069724406984716?ref_src=twsrc%5Etfw">February 14, 2019</a></blockquote>
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