A knowledge base article about Are both incoming and outgoing firewall rules enforced on my bIT managed or self-managed VPS? provided by the UC Berkeley IT Service Hub - Knowledge Portal
In general, we only enforce firewall rules on incoming requests to managed and self-managed servers.
There are some general outbound rules in place; rules that target specific hosts can be created upon request and may be required at some point. Deny rules can also be made. Both specific outbound and deny rule requests must be reviewed on a case by case basis.
Please be aware that bIT managed servers have a host-based and hardware firewall.