What is max number of TCP/IP sockets I can open on a droplet?

Hi, I need to run a proxy server for my IoT devices; I need 1 TCP/IP socket per device; What is max # of sockets I can open on a single droplet? My tests point at a number of about 2K?

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Site Moderator
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October 6, 2022

Hello @elkangler

2000 connections should be totally okay (if the droplet has the necessary resources to handle the traffic)

Another thing to mention is that you might need to edit the /etc/sysctl.conf file to allow that many TCP connections as this might be limited to a lower value by default.


Bobby Iliev
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October 6, 2022

Hi there,

I think that 2000 TCP/IP sockets should be doable, you will be quite far from the standard port range limit, eg. from port 1024 to 49151.

  • Well Known Ports (0-1023) – reserved for the operating system and core services
  • Registered Ports (1024-49151) – which can be used by applications, specific services, and users
  • Dynamic Ports (49152-65535)

So as long as you have enough resources on the server for all of your 2k services it should be ok I believe.



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