Mailboxes to Internet 4: Perimeter and Proxies
Firewalls, monitoring, and when internet access becomes mandatory
Stories and runbooks from moving services from mailbox-era systems to internet-first Linux stacks.
Firewalls, monitoring, and when internet access becomes mandatory
Samba, printers, and mixed-network habits that linger longer than servers
Postfix, hostile traffic, and trust on weekdays
Crosspoint, dial-up culture, and the beige-box Linux bridge