Problem with Multiple IPV4 Wan Adresses to internal Servers

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Fox1Lead
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Joined: 17 Jul 2008
Posts: 7

PostPosted: Tue Nov 03, 2020 4:33    Post subject: Problem with Multiple IPV4 Wan Adresses to internal Servers Reply with quote
Hi i have a Problem with my Setup on
Router-Modell
TP-Link TL-WR841ND v10
Firmware-Version
DD-WRT v3.0-r44700 std (10/30/20)
Kernel Version
Linux 3.18.140-d5 #95164 Fri Oct 30 01:19:33 GMT 2020 mips

before i had a Wrt54 gl with much older Software version

I have 3 Ip V4 Wan adresses and Want to bind 2 on virtual internal interfaces to get the data to my servers

The following config was working on my old router for some years.

If thats a wrong way to do it, it would be perfect if you can give me a advice
WanIP1 is setup in normal config and is working without any problems



Thank you very much & regards


Last edited by Fox1Lead on Tue Nov 03, 2020 9:28; edited 1 time in total
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eibgrad
DD-WRT Guru


Joined: 18 Sep 2010
Posts: 8719

PostPosted: Tue Nov 03, 2020 5:34    Post subject: Reply with quote
When you dump ifconfig and the firewall, are any of those configurations present?

Code:
ifconfig
iptables -vnL FORWARD
iptables -t nat -vnL PREROUTING
iptables -t nat -vnL POSTROUTING


Given the difference in age between the two routers, if I had to guess, there's a good chance the WAN interface name has changed from vlan1 to vlan2. That's why it's better to NOT hardcode such values but instead determine them dynamically.

Code:
WAN_IF="$(ip route | awk '/^default/{print $NF}')"

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Fox1Lead
DD-WRT Novice


Joined: 17 Jul 2008
Posts: 7

PostPosted: Tue Nov 03, 2020 6:51    Post subject: Reply with quote
you was right, tutorial did the trick

Last edited by Fox1Lead on Tue Nov 03, 2020 9:27; edited 1 time in total
egc
DD-WRT Guru


Joined: 18 Mar 2014
Posts: 7742
Location: Netherlands

PostPosted: Tue Nov 03, 2020 8:44    Post subject: Reply with quote
Some things have changed, I think, see: https://wiki.dd-wrt.com/wiki/index.php/Access_To_Modem_Configuration

and this might be one of those TP Link routers with a switch which is not working with VLAN's or needs extra startup commands, not sure about this

This question belongs to Advanced networking, I will transfer it

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