check you squid.conf in /etc/squid. Look for the line that reads acl Safe_ports, and add 2087 there. Then do a service squid restart, and try it again. You may have to wait a bit for squid to fully restart. If that works, then create a custom template that adds this port to your squid.conf. Do a mkdir -p /etc/e-smith/templates-custom/etc/squid/squid.conf, then change to that directory, then cp /etc/e-smith/templates/etc/squid/squid.conf/20ACL15Safe_ports .
Now edit this file and add your port. Then do a /etc/e-smith/expand-template /etc/squid/squid.conf
Next, service squid restart
That should be it.
GL
JB