To change RPC port for firewall.

One of customer wants to change the NFS RPC port for firewall.
They don't allow to open the ports below 1024 ( except some specific port 111, 22, etc )

So, I have to change the kernel paremeter like this :

NFS Server : MapR NFS server
NFS Client : Mint17.3

#sysctl -a | grep resvport

위의 결과값이 아래와 유사하다면

# sysctl -a | grep resvport
sunrpc.min_resvport = 665
sunrpc.max_resvport = 1023


$sudo vim /etc/sysclt.conf
...
sunrpc.min_resvport = 1024
sunrpc.max_resvport = 2048

$sudo reboot


$ sudo sysctl -a | grep resvport

sunrpc.max_resvport = 2048
sunrpc.min_resvport = 1024

$ sudo mount -o proto=tcp,mountproto=udp,port=2049 172.16.234.203:/mapr /home/hiboss1/test

$ df -h
Filesystem            Size  Used Avail Use% Mounted on
udev                  3.9G  4.0K  3.9G   1% /dev
tmpfs                 797M  3.8M  794M   1% /run
/dev/sda1              42G  5.6G   34G  15% /
none                  4.0K     0  4.0K   0% /sys/fs/cgroup
none                  5.0M     0  5.0M   0% /run/lock
none                  3.9G     0  3.9G   0% /run/shm
none                  100M  4.0K  100M   1% /run/user
172.16.234.203:/mapr  100G     0  100G   0% /home/hiboss1/test

$ sudo netstat -anop|grep 2049
tcp        0      0 172.16.234.205:1919     172.16.234.203:2049     TIME_WAIT   -                timewait (50.68/0/0)
tcp        0      0 172.16.234.205:1786     172.16.234.203:2049     ESTABLISHED -                keepalive (54.22/0/0)

$ sudo netstat -anop|grep 2049
tcp        0      0 172.16.234.205:1786     172.16.234.203:2049     ESTABLISHED -                keepalive (0.94/0/0) <<< port 1786 for NFS