How to check the connection limit in Linux?

1 year ago

Jackson Davis

1 minute

To view the connection limit of a Linux system, you can follow these steps:

Use the ulimit command: ulimit is a command used to view and modify shell resource limits. To check the current user’s connection limit, execute the following command in the terminal:

   ulimit -n

2. Viewing the /proc file system: The /proc file system in Linux provides real-time information about the kernel and processes. You can use the cat command to view the /proc/sys/fs/file-max file to obtain the maximum number of open file descriptors in the system.

   cat /proc/sys/fs/file-max

Check the sysctl parameters: sysctl is a tool for managing and adjusting Linux kernel parameters. Use the following command to check parameters related to connection numbers:

sysctl net.ipv4.ip_local_port_range

sysctl net.ipv4.tcp_max_syn_backlog

sysctl net.core.somaxconn

These methods will provide information about connection limits, including limits for the current user, system-wide limits, and parameters related to network connections. Please note that changing connection limits may require root permissions or the sudo command.