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Questions tagged [dnat]

101 questions
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Redirect traffic from one IP adress to another

I am moving a server from one local IP address to another, and I have a lot of places on my network which statically reference the old IP address. I'd like to re-route that traffic to the new address, while also being able to directly use the new…
aaronburro
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Port 80 mixed up among clients using DNAT

I'm trying to set up a network like this: ...but I'm facing an issue. Here's the point: If I try to reach (e.g.) mywebsite1.com from external it works like a charm and it's shown my wonderful website but whenever I try to run (e.g.) apt-get update…
KaMZaTa
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Can I access my VMware workstation intranet VMs through a public IP address

I have a Windows Server with a public IP address (102.1.1.1) and I've installed VMware workstation on it, creating several VMs on it. The VMs use intranet IP addresses, such as 10.0.0.1, 10.0.0.2. I have a question, whether exists a network…
244boy
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How-to DNAT-forward all IP traffic on Windows 10 from IP1 to IP2?

On my local machine, I want to setup a (web-)server that receives data that is sent (via http/https) to IP 65.55.44.109 (vortex.data.micorosoft.com). In order to do that, I need to forward all IP traffic on 65.55.44.109 to 127.0.0.1 on MY machine,…
Quandary
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(dnat|redirect) with masquerade doesn't work

I have a problem, till a bit ago it was working just fine. but now, it doesn't work, but on another testing server it works just fine I force all traffic to tor, and this part works just fine. Problem is on masquerade I think as it not change the…
DoomedRaven
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Infos about iptables DNAT/REDIRECT to local

I'm using Qubes OS, a system based on the Xen microkernel, which let you run easily multiple Virtual Machines and compartmentalize your digital life. All the domains are connected by default (through virtual interfaces) to a FirewallVM which is…
JumpAlways
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How to DNAT Broadcast Packets

I am working on a project where I have to DNAT some broadcast packets to a remote machine IP Address. So far I have learnt that IP-tables can only DNAT unicast packets and it does not DNAT broadcast packets. I am looking for a software that can…
Mian Ahmad
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Redirection (ip nat static) with filtering

I want to apply a D-NAT on my Cisco router to access my management IPBX server via the Internet and I have successfully done it with this command: (config)# ip nat inside source static tcp 10.1.1.254 80 41.25.130.47 8080 and to access to my server…
Paul
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Port forward port 25 on a Firehol instance

I am trying to port forward through a Firehol box to my email server on port 25: clienta:25 > firehol > email:25 This is a non-transparent connection. The command I am trying is: nat4 to-destination [email-ip]:25 dport 25 For simplicity for now,…
dthree
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Prerouting with iptables, destination port to DHCP ip

I have an iptables rule that translates requests to the same IP from different internal hosts by changing the source port. iptables -t NAT -A POSTROUTING -p TCP -d 173.32.1.2 --dport 873 \ -m state --state NEW,ESTABLISHED -j SNAT --to-source…
devil0150
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policy routing to guests on other server

After long searching I've found the answer to my challenge, but the last step fails. I have two identical servers that both serve multiple guests. The servers have two interfaces: one for the external IP's I got from my ISP and one for an internal…
user45156
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port rerouting with iptables not working

I want to reroute all traffic from a port e.g. 4445 (from localhost) to another port on another machine in the LAN e.g. 3305. I expected this should do the deal: iptables -A PREROUTING -t nat -i eth0 -p tcp --dport 4445 -j DNAT --to…
Sim
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iptables DNAT to external IP without masquerading does not work

On server 1.1.1.1: iptables -t nat -A PREROUTING -p tcp --dport 20000 -j DNAT --to-destination: 2.2.2.2:20000 iptables -t nat -A PREROUTING -p tcp --dport 20000 -j LOG --log-prefix pre20k iptables -t nat -A POSTROUTING -p tcp --dport 20000 -j LOG…
rlib
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Why does iptables not doing DNAT for the same subnet?

I have the following NAT setup: +--------------+ +-----------------------+ +-------------------+ | | | | | | | | | | | …
Kintarō
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NAT forwarding (whole IP) working only on some ports

Since my hoster doesn't allow briged setups I had to go for a NAT solution to run my CentOS VM on an additional IP and my host machine on the primary IP. Now, I've got a problem since for ports 22, 80 and 443 this works as expected. I reach my…
Martin Müller
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