/ Linux

Squid proxy

Workstation proxy

Just a quick configuration so I could work on servers unable to access Internet

Install apt install -y squid

Edit /etc/squid/squid.conf

acl SSL_ports port 443
acl Safe_ports port 80		# http
acl Safe_ports port 21		# ftp
acl Safe_ports port 443		# https
acl Safe_ports port 70		# gopher
acl Safe_ports port 210		# wais
acl Safe_ports port 1025-65535	# unregistered ports
acl Safe_ports port 280		# http-mgmt
acl Safe_ports port 488		# gss-http
acl Safe_ports port 591		# filemaker
acl Safe_ports port 777		# multiling http
acl CONNECT method CONNECT
acl mynetwork src 10.230.252.0/22
http_access allow mynetwork
http_access deny !Safe_ports
http_access deny CONNECT !SSL_ports
http_access allow localhost manager
http_access deny manager
http_access allow localhost
http_access deny all
http_port 3128
coredump_dir /var/spool/squid
refresh_pattern ^ftp:		1440	20%	10080
refresh_pattern ^gopher:	1440	0%	1440
refresh_pattern -i (/cgi-bin/|\?) 0	0%	0
refresh_pattern (Release|Packages(.gz)*)$      0       20%     2880
refresh_pattern .		0	20%	4320
forwarded_for off

Start, without enabling if this is a temporary thing : systemcl start squid

Then directly connect to you server, get your ip with who, then

export http_proxy=http://your_ip
export https_proxy=http://your_ip
export ftp_proxy=http://your_ip