Solved Redirect another IP TS3server - IPTABLES

[zhaiks]

i would like redirect all traffic from this IP: XXXport: 9990 - to this ts3 server ip: XXXX:9987

I would like it when users connect to this server XXX:9990 automatically redirect it to the main XXXX: 9987..

what should i configure in the server XXX with iptables - I Have ubuntu 14.04 lts

Edit by mod: IPs hidden

 

[Najsr]

Hello try this

Assuming that 192.168.1.100 is source IP address and 192.168.1.101 is destination

echo 1 > /proc/sys/net/ipv4/ip_forward

iptables -t nat -A PREROUTING -p udp --dport 9990 -j DNAT --to-destination 192.168.1.101:9987
iptables -t nat -A POSTROUTING -p udp -d 192.168.1.101 --dport 9987 -j SNAT --to-source 192.168.1.100

 

[vipiris]

Hello try this

Assuming that 192.168.1.100 is source IP address and 192.168.1.101 is destination

echo 1 > /proc/sys/net/ipv4/ip_forward

iptables -t nat -A PREROUTING -p udp --dport 9990 -j DNAT --to-destination 192.168.1.101:9987
iptables -t nat -A POSTROUTING -p udp -d 192.168.1.101 --dport 9987 -j SNAT --to-source 192.168.1.100

I test this and works.

 

[zhaiks]

Hello try this

Assuming that 192.168.1.100 is source IP address and 192.168.1.101 is destination

echo 1 > /proc/sys/net/ipv4/ip_forward

iptables -t nat -A PREROUTING -p udp --dport 9990 -j DNAT --to-destination 192.168.1.101:9987
iptables -t nat -A POSTROUTING -p udp -d 192.168.1.101 --dport 9987 -j SNAT --to-source 192.168.1.100

Thanks bro you are amazing

 

[chuga2]

Hello try this

Assuming that 192.168.1.100 is source IP address and 192.168.1.101 is destination

echo 1 > /proc/sys/net/ipv4/ip_forward

iptables -t nat -A PREROUTING -p udp --dport 9990 -j DNAT --to-destination 192.168.1.101:9987
iptables -t nat -A POSTROUTING -p udp -d 192.168.1.101 --dport 9987 -j SNAT --to-source 192.168.1.100

how can redirect the server to another server but for port query 10011??

 

[Najsr]

Not sure but probably changing protocol to tcp and source / destination ports could do the thing

 

[chuga2]

Not sure but probably changing protocol to tcp and source / destination ports could do the thing

example ?

 

[Najsr]

For example

echo 1 > /proc/sys/net/ipv4/ip_forward

iptables -t nat -A PREROUTING -p tpc --dport 10011-j DNAT --to-destination 192.168.1.101:10011
iptables -t nat -A POSTROUTING -p tpc -d 192.168.1.101 --dport 10011 -j SNAT --to-source 192.168.1.100

 

[chuga2]

PREROUTING -p udp ???? 10011 is tcp

 

[Najsr]

My bad, edited it.

 

[chuga2]

For example

echo 1 > /proc/sys/net/ipv4/ip_forward

iptables -t nat -A PREROUTING -p tpc --dport 10011-j DNAT --to-destination 192.168.1.101:10011
iptables -t nat -A POSTROUTING -p tpc -d 192.168.1.101 --dport 10011 -j SNAT --to-source 192.168.1.100

is not working

 

[dumpmyself]

-p tpc?

echo 1 > /proc/sys/net/ipv4/ip_forward



iptables -t nat -A PREROUTING -p tcp --dport 10011-j DNAT --to-destination 192.168.1.101:10011

iptables -t nat -A POSTROUTING -p tcp -d 192.168.1.101 --dport 10011 -j SNAT --to-source 192.168.1.100

 

[chuga2]

-p tpc?

echo 1 > /proc/sys/net/ipv4/ip_forward



iptables -t nat -A PREROUTING -p tcp --dport 10011-j DNAT --to-destination 192.168.1.101:10011

iptables -t nat -A POSTROUTING -p tcp -d 192.168.1.101 --dport 10011 -j SNAT --to-source 192.168.1.100

I saw it and i changed it but is not worked

 

[dumpmyself]

Try now sorry

echo 1 > /proc/sys/net/ipv4/ip_forward



iptables -t nat -A PREROUTING -p tcp --dport 10011 -j DNAT --to-destination 192.168.1.101:10011

iptables -t nat -A POSTROUTING -p tcp -d 192.168.1.101 --dport 10011 -j SNAT --to-source 192.168.1.100