Configure proxy

If your FreeBSD box works behind a proxy, you may need to configure proxy to make it access network.

For csh or tcsh, set proxy in /etc/csh.cshrc:

setenv HTTP_PROXY http://web-proxy.xxxxxx.com:8080
setenv HTTPS_PROXY https://web-proxy.xxxxxx.com:8080

For sh, set proxy in /etc/profile:

export HTTP_PROXY http://web-proxy.xxxxxx.com:8080
export HTTPS_PROXY https://web-proxy.xxxxxx.com:8080

Reference:
Using FreeBSD inside a controlled network – A required HTTP Proxy and No FTP.