How to setup HTTP Proxy in FreeBSD

The HTTP proxy is set through environment variable HTTP_PROXY. Environment variables can be controlled during user login. Assuming the proxy is proxy.somewhere.net:3128 ensure the following in /etc/login.conf:

:setenv=HTTP_PROXY=http\c//proxy.somewhere.net\c3128:\

Update login capability database:

cap_mkdb /etc/login.conf

Re-login and ensure it is properly set:

env | grep HTTP_PROXY