proxy-kvm.pac

function FindProxyForURL(url, host) {
    // access the CIMCs via the SSH-tunneled SOCKS proxy that is hopefully
    // running on port 8080, but allow fallback if it's not running
    if (isInNet(dnsResolve(host), "10.0.7.0", "255.255.255.0")) {
        return "SOCKS localhost:8080; DIRECT";
    }
    // Everything else directly!
    return "DIRECT";
}

savbu-proxy

#!/bin/zsh

# PAC file that proxies via SOCKS on localhost:8080 for accesses to 10.0.7.0/24
# addresses (i.e., the CIMCs for the savbu-usnic cluster)
pac_file=https://gist.githubusercontent.com/goodell/117e7912dba40243f82d/raw/9c956780ec1d6c7afcf0cb2812d574b17d92a603/proxy-kvm.pac

#interface="${1:=Ethernet 2}"
#interface="${1:=Wi-Fi}"
interface="${1:=Display Ethernet}"

set -x
function enable_proxy() {
    sudo networksetup -setautoproxyurl "$interface" $pac_file
    sudo networksetup -setautoproxystate "$interface" on
}

function disable_proxy() {
    # setting state off seems to clear the URL too
    #sudo networksetup -setautoproxyurl "$interface" ''
    sudo networksetup -setautoproxystate "$interface" off
}

enable_proxy
trap disable_proxy 0 SIGHUP SIGINT SIGQUIT SIGTERM

ssh -T -N -v -D localhost:8080 savbu-usnic
trap -