When running software, which tries to connect to the internet, on one of the compute nodes of our cluster you might encounter time-out errors. By default we do not allow compute nodes of the clusters to access the internet. Only the login nodes do NAT. However, you can circumvent this for HTTP/HTTPS connections by setting a proxy: export http_proxy=http://proxy:80 export https_proxy=http://proxy:80 Some software may expect instead export HTTP_PROXY=http://proxy:80 export HTTPS_PROXY=http://proxy:80