| skos:altLabel | - firewall
- filtering
- dam
- wall of fire
- Firewall
- prohibiting
- Firewalls
- firewalled
- firewalls
- firewalling
- Firewall (computing)#First generation: packet filters
- Firewall software
- Firewall-
- Network firewall
- Next Generation Firewalls
- computer firewall
- fire-walled
- firewall (computing)
- firewall administrator
- firewall software
- firewall technology
- firewall/VPN
- first- and second-generation firewalls
- hardware firewall
- host-based firewall
- network firewall
- network firewalls
- network-based firewall
- packet filter firewall
- packet filtering
- software firewall
- system firewall
- the second generation firewall
- the third generation firewall
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