Disable Incoming Internet Connections

Last updated 2011-06-05 - Send Feedback
Related: how-to, macOS, security

Enabling the Mac OS X Firewall.

Enable the Mac OS X Firewall

If you are not using File Sharing, click the Advanced… button and disable all incoming connections.

Advanced options for the Mac OS X Firewall

View Canon DSLR Wish List or World of CANON

B&H Deal Zone • Deals by Brand/Category/Savings
Deals expire in 5 hours unless noted. Certain deals may last longer.
Sony Mirrorless wish list • Deals on Sony
$1199 SAVE $400 = 25.0% Apple 12" MacBook (Mid 2017, Gold) in Computers: Apple Macs	$899 SAVE $380 = 29.0% $19 FREE ITEMS Apple 12.9" iPad Pro (Mid 2017, 512GB, Wi-Fi + 4G LTE, Gold) in Electronics: iPads and Tablets	$849 SAVE $300 = 26.0% $19 FREE ITEMS Apple 12.9" iPad Pro (Mid 2017, 512GB, Wi-Fi Only, Gold) in Electronics: iPads and Tablets	$5999 SAVE $700 = 10.0% $49 FREE ITEMS Apple 15.4" MacBook Pro with Touch Bar (Mid 2018, Space Gray) in Computers: Apple Macs	$1549 SAVE $250 = 13.0% Apple 27" iMac with Retina 5K Display (Mid 2017) in Computers: Apple Macs	$2399 SAVE $100 = 4.0% Apple Mac mini (Late 2018) in Computers: Apple Macs
$159 SAVE $240 = 60.0% Bushnell 2x40 Equinox Z Digital Night Vision Bi-Ocular (Matte Bl… in All Other Categories	$313 SAVE $150 = 32.0% Cineo Lighting Basic Matchbox LED Light Kit in Lighting: LED	$382 SAVE $218 = 36.0% Dracast LED500 Plus Series Daylight LED Light in Lighting: LED	$1697 SAVE $800 = 32.0% LG C8PUA 55" Class HDR UHD Smart OLED TV in Electronics: Televisions	$599 SAVE $1400 = 70.0% LaCie 2TB Bolt 3 Thunderbolt 3 External SSD in Computers: Drives and Storage	$50 SAVE $110 = 68.0% MeFOTO GlobeTrotter Air Travel Tripod in Accessories: Tripods and Support
$50 SAVE $110 = 68.0% MeFOTO GlobeTrotter Air Travel Tripod (Titanium) in Accessories: Tripods and Support	$3097 SAVE $200 = 6.0% Nikon D850 DSLR in Cameras: DSLR	$649 SAVE $150 = 18.0% Olympus OM-D E-M10 Mark III Mirrorless with 14-42mm EZ in Cameras: Mirrorless	$898 SAVE $200 = 18.0% Panasonic 8-18mm f/2.8-4 Leica DG Vario-Elmarit ASPH. in Lenses: Mirrorless	$1797 SAVE $200 = 10.0% Pentax K-1 Mark II DSLR in Cameras: DSLR	$178 SAVE $70 = 28.0% Samsung 1TB T5 Portable Solid-State Drive in Computers: Drives and Storage
$407 SAVE $50 = 10.0% Samsung 2TB T5 Portable Solid-State Drive in Computers: Drives and Storage	$83 SAVE $10 = 10.0% SanDisk 256GB Extreme PRO UHS-I SDXC Memory Card in Accessories: Memory Cards	$50 SAVE $110 = 68.0% Sennheiser PMX 684i In-Ear Neckband Sports Headphone Kit for iOS… in Electronics: Audio	$998 SAVE $400 = 28.0% Sony a7 II Mirrorless in Cameras: Mirrorless	$1798 SAVE $200 = 10.0% Sony a7R II Mirrorless in Cameras: Mirrorless	$2798 SAVE $400 = 12.0% Sony a7R III Mirrorless in Cameras: Mirrorless
$3998 SAVE $500 = 11.0% Sony a9 Mirrorless in Cameras: Mirrorless	$50 SAVE $80 = 61.0% Think Tank Photo Retrospective Lens Changer 3 in Accessories: Bags and Cases	$199 SAVE $350 = 63.0% ikan IFB576 Featherweight Bi-Color LED Light with Anton Bauer an… in Lighting: LED