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odd port numbers used by Firefox

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Hello Everyone, I looking through my firewall logs I see that Firefox uses port numbers like 64862, 64864 and others. Does anyone know what these ports are used for? My firewall is blocking them and I cannot open it up until I know what they are.

Best Regards

Hello Everyone, I looking through my firewall logs I see that Firefox uses port numbers like 64862, 64864 and others. Does anyone know what these ports are used for? My firewall is blocking them and I cannot open it up until I know what they are. Best Regards

Выбранное решение

When I run
netstat -a -b -n -o
in a cmd.exe window, I see a lot of this:

  TCP    127.0.0.1:58964        127.0.0.1:58965        ESTABLISHED     8144
 [firefox.exe]
  TCP    127.0.0.1:58965        127.0.0.1:58964        ESTABLISHED     8144
 [firefox.exe]
  TCP    127.0.0.1:58966        127.0.0.1:58967        ESTABLISHED     13348
 [firefox.exe]
  TCP    127.0.0.1:58967        127.0.0.1:58966        ESTABLISHED     13348
 [firefox.exe]
  TCP    127.0.0.1:58969        127.0.0.1:58970        ESTABLISHED     16568
 [firefox.exe]
  TCP    127.0.0.1:58970        127.0.0.1:58969        ESTABLISHED     16568
 [firefox.exe]
  TCP    127.0.0.1:58971        127.0.0.1:58972        ESTABLISHED     20944
 [firefox.exe]
  TCP    127.0.0.1:58972        127.0.0.1:58971        ESTABLISHED     20944
 [firefox.exe]
  TCP    127.0.0.1:58975        127.0.0.1:58976        ESTABLISHED     20076
 [firefox.exe]
  TCP    127.0.0.1:58976        127.0.0.1:58975        ESTABLISHED     20076
 [firefox.exe]
  TCP    127.0.0.1:58977        127.0.0.1:58978        ESTABLISHED     15204
 [firefox.exe]
  TCP    127.0.0.1:58978        127.0.0.1:58977        ESTABLISHED     15204
 [firefox.exe]
  TCP    127.0.0.1:58979        127.0.0.1:58980        ESTABLISHED     4004
 [firefox.exe]
  TCP    127.0.0.1:58980        127.0.0.1:58979        ESTABLISHED     4004
 [firefox.exe]
  TCP    127.0.0.1:58982        127.0.0.1:58983        ESTABLISHED     15320
 [firefox.exe]
  TCP    127.0.0.1:58983        127.0.0.1:58982        ESTABLISHED     15320
 [firefox.exe]

That seems to be Firefox connecting with itself, perhaps for reasons related to process isolation.

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Дополнительные сведения о системе

Установленные плагины

  • Shockwave Flash 32.0 r0

Приложение

  • User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:74.0) Gecko/20100101 Firefox/74.0

Дополнительная информация

cor-el
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See: *https://support.mozilla.org/en-US/kb/how-stop-firefox-making-automatic-connections
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Задавший вопрос

Thank you for the reply but I'm looking for some documentation that explains why firefox is using the network ports in the 6000. Best Regards

Thank you for the reply but I'm looking for some documentation that explains why firefox is using the network ports in the 6000. Best Regards

Изменено noone1

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cor-el
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Полезный ответ

On Windows Firefox will use some (random) ports to communicate with the software security device. That are local connections that do not leave the computer. I don't know in what range these ports fall.

On Windows Firefox will use some (random) ports to communicate with the software security device. That are local connections that do not leave the computer. I don't know in what range these ports fall.
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jscher2000
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Выбранное решение

When I run
netstat -a -b -n -o
in a cmd.exe window, I see a lot of this:

  TCP    127.0.0.1:58964        127.0.0.1:58965        ESTABLISHED     8144
 [firefox.exe]
  TCP    127.0.0.1:58965        127.0.0.1:58964        ESTABLISHED     8144
 [firefox.exe]
  TCP    127.0.0.1:58966        127.0.0.1:58967        ESTABLISHED     13348
 [firefox.exe]
  TCP    127.0.0.1:58967        127.0.0.1:58966        ESTABLISHED     13348
 [firefox.exe]
  TCP    127.0.0.1:58969        127.0.0.1:58970        ESTABLISHED     16568
 [firefox.exe]
  TCP    127.0.0.1:58970        127.0.0.1:58969        ESTABLISHED     16568
 [firefox.exe]
  TCP    127.0.0.1:58971        127.0.0.1:58972        ESTABLISHED     20944
 [firefox.exe]
  TCP    127.0.0.1:58972        127.0.0.1:58971        ESTABLISHED     20944
 [firefox.exe]
  TCP    127.0.0.1:58975        127.0.0.1:58976        ESTABLISHED     20076
 [firefox.exe]
  TCP    127.0.0.1:58976        127.0.0.1:58975        ESTABLISHED     20076
 [firefox.exe]
  TCP    127.0.0.1:58977        127.0.0.1:58978        ESTABLISHED     15204
 [firefox.exe]
  TCP    127.0.0.1:58978        127.0.0.1:58977        ESTABLISHED     15204
 [firefox.exe]
  TCP    127.0.0.1:58979        127.0.0.1:58980        ESTABLISHED     4004
 [firefox.exe]
  TCP    127.0.0.1:58980        127.0.0.1:58979        ESTABLISHED     4004
 [firefox.exe]
  TCP    127.0.0.1:58982        127.0.0.1:58983        ESTABLISHED     15320
 [firefox.exe]
  TCP    127.0.0.1:58983        127.0.0.1:58982        ESTABLISHED     15320
 [firefox.exe]

That seems to be Firefox connecting with itself, perhaps for reasons related to process isolation.

When I run <br> <code>netstat -a -b -n -o</code> <br> in a <code>cmd.exe</code> window, I see a lot of this: <pre> TCP 127.0.0.1:58964 127.0.0.1:58965 ESTABLISHED 8144 [firefox.exe] TCP 127.0.0.1:58965 127.0.0.1:58964 ESTABLISHED 8144 [firefox.exe] TCP 127.0.0.1:58966 127.0.0.1:58967 ESTABLISHED 13348 [firefox.exe] TCP 127.0.0.1:58967 127.0.0.1:58966 ESTABLISHED 13348 [firefox.exe] TCP 127.0.0.1:58969 127.0.0.1:58970 ESTABLISHED 16568 [firefox.exe] TCP 127.0.0.1:58970 127.0.0.1:58969 ESTABLISHED 16568 [firefox.exe] TCP 127.0.0.1:58971 127.0.0.1:58972 ESTABLISHED 20944 [firefox.exe] TCP 127.0.0.1:58972 127.0.0.1:58971 ESTABLISHED 20944 [firefox.exe] TCP 127.0.0.1:58975 127.0.0.1:58976 ESTABLISHED 20076 [firefox.exe] TCP 127.0.0.1:58976 127.0.0.1:58975 ESTABLISHED 20076 [firefox.exe] TCP 127.0.0.1:58977 127.0.0.1:58978 ESTABLISHED 15204 [firefox.exe] TCP 127.0.0.1:58978 127.0.0.1:58977 ESTABLISHED 15204 [firefox.exe] TCP 127.0.0.1:58979 127.0.0.1:58980 ESTABLISHED 4004 [firefox.exe] TCP 127.0.0.1:58980 127.0.0.1:58979 ESTABLISHED 4004 [firefox.exe] TCP 127.0.0.1:58982 127.0.0.1:58983 ESTABLISHED 15320 [firefox.exe] TCP 127.0.0.1:58983 127.0.0.1:58982 ESTABLISHED 15320 [firefox.exe] </pre> That seems to be Firefox connecting with itself, perhaps for reasons related to process isolation.
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