Solved Port 25 closed, good or bad?

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Jcwisgod

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I was running a port scan, and every port was blocked besides port 25 which said closed, Screenshot: Screenshot by Lightshot

Is that a good or bad thing?
 

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Port 25 is the common port used by SMTP email servers. If you do not run an email server then it should be blocked. Malware can use this port to send email from your computer, zombie fashion.

You should investigate why this comes up. Is the port scan you are running on the internet? If so your isp may be doing something to make it closed vs blocked. Closed means your IP address responds to a port query, blocked means it does not respond at all (this is preferred).

Check out "shields up" on grc.com for info on these subjects:

https://www.grc.com/x/ne.dll?bh0bkyd2
 

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mikeytg said:
Port 25 is the common port used by SMTP email servers. If you do not run an email server then it should be blocked. Malware can use this port to send email from your computer, zombie fashion.

You should investigate why this comes up. Is the port scan you are running on the internet? If so your isp may be doing something to make it closed vs blocked. Closed means your IP address responds to a port query, blocked means it does not respond at all (this is preferred).

Check out "shields up" on grc.com for info on these subjects:

https://www.grc.com/x/ne.dll?bh0bkyd2
Click to expand...

I don't run any email servers, and yes the port scans I run are on the internet, every port besides port 25 says blocked, while port 25 says closed. and shields up doesn't really tell me how to address the problem, it just tells me port 25 is closed, and my ISP is ATT, am I at any risk, with is being closed instead of blocked?
 

My Computer

System One

  • OS
    Windows 8
    Computer type
    Laptop
    System Manufacturer/Model
    HP Ultrabook
    CPU
    2.6 GHz Core i5-3317U
    Memory
    8 gb DDR3 Ram
    Screen Resolution
    1366 x 768
    Hard Drives
    320gb HDD, 120gb SSD
    Keyboard
    Backlight Island Style Keyboard
    Mouse
    Trackpad
    Internet Speed
    18 MB/S DL Speed
    Browser
    Opera
    Antivirus
    Avast/Malwarebytes
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