Definition of firewall in English:



  • 1A wall or partition designed to inhibit or prevent the spread of fire.

    • ‘Fire barriers, firewalls and rated floors are used to keep a fire contained on the floor or area of origin and limit its growth and impact.’
    • ‘When we had the chimney cleaned, we were told the problem could be taken care of by adding a firewall instead of replacing the back wall.’
    • ‘When a garage is added to a dwelling, a primary concern is altering the partition wall between the house and garage to comply as a one-hour firewall.’
    • ‘But firefighters didn't have a chance to save the landmark, which was constructed in the early 1960s of wood and plywood and had no firewall.’
    • ‘One small section of the office was saved because recent renovations had partitioned it with a two-hour firewall, which kept the flames at bay.’
    • ‘He could have concluded that there were no firewalls just by looking from the ground level because the walls would have projected above the roofline.’
    • ‘In a building, a firewall prevents a fire from quickly burning through, giving firefighter a chance to douse flames, and occupants a chance to find safety.’
    1. 1.1Computing A part of a computer system or network which is designed to block unauthorized access while permitting outward communication.
      • ‘A firewall is essential in preventing others from breaking into your machine.’
      • ‘Invest in a software firewall and keep your system up to date.’
      • ‘They should ensure they have up-to-date anti-virus software and personal firewalls.’
      • ‘The risk can be managed by aggressively monitoring computers and networks through firewalls, strict download policies, and frequent security audits.’
      • ‘The firewall will also prevent attacks from the Internet on your PC.’
    2. 1.2
      another term for Chinese wall
      • ‘Racism creates a false and entirely regrettable firewall, but on the occasions where one culture can simply sit down and talk with the other, there is much to agree on and much to be enjoyed.’
      • ‘Here in the modern age, we are supposed to construct a firewall between science and religion.’


[WITH OBJECT]Computing
  • Protect (a network or system) from unauthorized access with a firewall.

    ‘a firewalled network’
    ‘our security products offer integral firewalling’
    • ‘Providing systems are properly firewalled then attacks should fail.’
    • ‘Preventing infection from Worms is the number one reason people are firewalling their computers.’
    • ‘Every wireless laptop should be firewalled.’
    • ‘At this point, the technology is in place to firewall yourselves from the rest of the world, if you care to.’
    • ‘I quickly firewalled a sensitive server, but that was not the end of the project.’