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They are both tcp ports. generally. if your behind a router, block them in setup. 
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They are both tcp ports. generally. if your behind a router, block them in setup.

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If TCP Port 139/445 is disabled/blocked cant we access any shares on the machine?
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If TCP Port 139/445 is disabled/blocked cant we access any shares on the machine?

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Hi,<br />
What are these 2 ports 139 and 445. How can i block them.<br />
In which all cases are these ports used . Will there be any issues blocking them. And is there a GPO way to block these ports.<br />
<br />
REgards<br />
Sharath
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Hi,
What are these 2 ports 139 and 445. How can i block them.
In which all cases are these ports used . Will there be any issues blocking them. And is there a GPO way to block these ports.

REgards
Sharath

What are these 2 ports 139 and 445. How can i block them.

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This topic area includes legacy versions of Windows prior to Windows 2000: Windows 3/3.1, Windows 95 and Windows 98, plus any other Windows-related versions including Windows Mobile.