to change nginx config file location

/etc/nginx/nginx.conf

command to check iptable

iptables is an application that allows a user to configure the firewall functionality built into the Linux kernel

iptables -t filter -L (filter table is used for packet filtering)

command to check NAT table (The nat table is used for Network address translation.)

iptables -t nat -L

https://linux-training.be/networking/ch14.html#:~:text=iptables%20tables,-By%20default%20there&text=The%20nat%20table%20is%20used%20for%20address%20translation.&text=The%20mangle%20table%20can%20be,table%20are%20called%20a%20chain.

for Nfs server setup

https://ubuntu.com/server/docs/network-file-system-nfs#:~:text=NFS%20allows%20a%20system%20to,if%20they%20were%20local%20files.

for changing owner of file and directory

sudo chown nobody:nogroup /srv/homes