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How to change destination address in Linux IPTables?
My problem is that a relay of my rtsp local server accepts only a multicast ip-address but I would that the packets are sent with a classical ip-address. Thanks You can change the destination address in PREROUTING, and source address in POSTROUTING.
Can you use DNAT to change source port?
@PiedPiper was right. With DNAT you must specify an ip address, but we only want to do port redirection, so -j REDIRECT may work in this case. See http://www.netfilter.org/documentation/HOWTO//NAT-HOWTO-6.html#ss6.2 Instead of making SNAT, try with DNAT. The source port gets changed because SNAT means SourceNAT, so DNAT will work for you.
Is it possible to change destination address POSTROUTING?
Looking on the web I saw that with Iptables is possible to change the destination address of the packets in prerouting. Can you help me? I would something like My problem is that a relay of my rtsp local server accepts only a multicast ip-address but I would that the packets are sent with a classical ip-address.
How to change destination of locally generated connections?
Taken from http://www.netfilter.org/documentation/HOWTO/NAT-HOWTO.txt: 6.3.7. Altering the Destination of Locally-Generated Connections configuration option, some testing, and a fair bit of coding, so unless someone contracts Rusty to write it, I wouldn’t expect it soon).
Is it possible to forward traffic to a new IP?
By using iptables and its masquerade feature, it is possible to forward all traffic to the old server to the new IP. This tutorial will show which command lines are required to make this possible. In this article, it is assumed that you do not have iptables running, or at least no nat table rules for chain PREROUTING and POSTROUTING .
How to change the IP address of a gateway?
Replace with the actual IP address of your gateway, as this wasn’t provided in your question. Traffic destined for 10.0.0.1 will now originate from 10.0.0.160.
How to specific multiple IP addresses in iptables using Linux script?
I need to specific multiple IP address in iptables using Linux script. How do I create a rule that uses multiple source or destination IP addresses ? You can set multiple source ( -s or –source or destination ( -d or –destination) IP ranges using the following easy to use syntax.
How to translate an IP address to a destination?
For our scenario, it is: iptables -t nat -A PREROUTING -d 10.10.10.99/32 -j DNAT –to-destination 192.168.1.101 Now all IP packets coming to our machine’s (A) IP address of 10.10.10.99 will be rewritten and sent to 192.168.1.101 instead. This translation is transparent to the machine the connection is originating from and to machine B.