Need help converting some linux commands to OSX

Question

I want to convert some linux commands into OSX. (Mavericks 10.9.4)

root@bt:/# /etc/init.d/apache2 start (will "sudo apachectl start" do the same?)
root@bt:/# echo “some Site Goes Here!” > /var/www/index.html

Now I have a site that I host on my macbook local host (8080). So would echo localhost:8080 > /var/www/index.html do the same as above in OSX ?

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Next set of cammands I have no idea how to replace in OSX. Please help

root@bt:/# iptables -t nat --flush
root@bt:/# iptables --zero
root@bt:/# iptables -A FORWARD --in-interface eth0 -j ACCEPT
root@bt:/# iptables -t nat --append POSTROUTING --out-interface eth0 -j MASQUERADE
# Forward to our site
root@bt:/# iptables -t nat -A PREROUTING -p tcp --dport 80 --jump DNAT --to-destination <Proxy’s IP>

Answer 1

Apache

Service

Manual start/stop: sudo apachectl start and sudo apachectl stop

System autostart: sudo launchctl load -w /System/Library/LaunchDaemons/org.apache.httpd.plist

Root directory

The default directory used by Apache is set to /Library/WebServer/Documents

So you can run echo "some Site Goes Here!" > /Library/WebServer/Documents/index.html

I would recommend you to change the default settings to suit your needs, the default config is in /etc/apache2/httpd.conf.

Firewall

You want to force NAT and redirection of port TCP/80. Mavericks use Packet Filter (PF) firewall from OpenBSD, ported from FreeBSD.

echo "nat from !(en0) -> en0 rdr on en0 from !(en0) inet proto tcp to port 80 -> PROXY-IP" | pfctl -f -

Disable NAT e redirections: pfctl -F nat