问题
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?
回答1:
Following command will list the ephemeral port range in Linux system
sysctl -A | grep 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.
sysctrl -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.
来源：https://stackoverflow.com/questions/28573390/how-to-view-and-edit-the-ephemeral-port-range-on-linux