Breaking News: Grepper is joining You.com. Read the official announcement!

iptable port forward

DreamCoder answered on May 25, 2022 Popularity 9/10 Helpfulness 7/10

answer iptable port forward

iptable port forward

Comment

#If both returns 1 it's ok. If not do the following:

sysctl net.ipv4.conf.eth0.forwarding=1
#or
echo '1' | sudo tee /proc/sys/net/ipv4/conf/ppp0/forwarding
echo '1' | sudo tee /proc/sys/net/ipv4/conf/eth0/forwarding

#Second thing - DNAT could be applied on nat table only. So, your rule should be extended by adding table specification as well (-t nat):

iptables -t nat -A PREROUTING -p tcp -i ppp0 --dport 8001 -j DNAT --to-destination 192.168.1.200:8080
iptables -A FORWARD -p tcp -d 192.168.1.200 --dport 8080 -m state --state NEW,ESTABLISHED,RELATED -j ACCEPT

#Both rules are applied only to TCP traffic (if you want to alter UDP as well, you need to provide similar rules but with -p udp option set).
#Last, but not least is routing configuration. Type:

ip route

#and check if 192.168.1.0/24 is among returned routing entries.

Popularity 9/10 Helpfulness 7/10 Language shell

Source: serverfault.com

Tags: forward port shell

Link to this answer
Share Copy Link

Contributed on May 25 2022

DreamCoder

0 Answers Avg Quality 2/10

Continue with Google

By continuing, I agree that I have read and agree to Greppers's Terms of Service and Privacy Policy.

iptable port forward

Contents

More Related Answers

iptable port forward

Grepper

Documentation

Social

Legal

Contact

Oops, You will need to install Grepper and log-in to perform this action.