How to view and edit the ephemeral port range on Linux?
linux, network-programming, networking, unix, unix-socket
Solution
Following command will list the ephemeral port range in Linux system
sysctl net.ipv4.ip_local_port_range
If we don't want to reboot, after editing /etc/sysctl.conf file if we execute following command it will be effective.
sysctl -p /etc/sysctl.conf .
The truth of the matter of effective range is output of
sysctl net.ipv4.ip_local_port_range
as mentioned by eckes in comment.
Problem
In my Linux system ephemeral port range is showing different ranges as follows ``` $ cat /proc/sys/net/ipv4/ip_local_port_range 32768 61000 ``` ``` cat /etc/sysctl.conf | grep net.ipv4.ip_local_port_range net.ipv4.ip_local_port_range = 9000 65500 ``` Which will be the effective ephemeral port range in my system?