[LINUX] Ssh to an external server under http proxy [from Ubuntu 18.04]

Introduction

I had a hard time when I wanted to ssh connect to an external server from the environment under the http proxy, so I will record it as a memorandum. Basically [here](https://kaworu.jpn.org/security/HTTP%E3%83%97%E3%83%AD%E3%82%AD%E3%82%B7%E3%82% B5% E3% 83% BC% E3% 83% 90% E7% B5% 8C% E7% 94% B1% E3% 81% AEssh% E6% 8E% A5% E7% B6% 9A) was used as a reference.

procedure

Installation

// sudo apt-Don't forget to get update
sudo apt-get install squid3
sudo apt-get install connect-proxy
sudo apt-get install openssh-client

squid settings

Add the following to /etc/squid3/squid.conf (it was squid in my environment (3 is not added)).

acl SSL_ports port 22
acl Safe_ports port 22          # ssh

Now restart squid.

//Again, I couldn't get 3 in my environment. If it has not started so far, start
service squid3 restart

ssh settings

Edit ~ / .ssh / config as follows. Please correspond the part of example.com.

Host example.com
        Hostname example.com
        ProxyCommand connect-proxy -H <http proxy url>:<http proxy port> %h %p

Run

Ssh as usual.

ssh [email protected]

that's all