Questions tagged [iptables]

is a user-space application to configure the Linux kernel firewall tables. These tables contain chains of rules defining the treatment of network packets.

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96 views

Installed WireGuard by PiVPN now PiHole DNS not responding. How to troubleshoot?

Recent fresh Raspbian installation August 2021. RP4, wired ethernet connection. pi@raspberrypi:~ $ cat /etc/debian_version 10.10 Summary of Steps: Installed PiHole: curl -sSL https://install.pi-...
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Firewall script

I currently have a raspberry pi set up as a Wifi access point along with Pi-hole for internet filtration. I want to add a firewall script using iptables but I'm not sure what I should add to it. This ...
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Forward from Macvlan Bridge to tun0 Inside Namespace [closed]

Trying to isolate OpenVPN from host in a Namespace for only wireless clients. Set up a namespace, added a veth pipe to the host, and iptable forwarded it with eth0. The namespace VPN tested with pings ...
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102 views

Pi4 Wireless AP: Can't Ping or Forward to eth0

Goal is for clients to connect through Pi4 AP to the WAN. The Pi4 is inside the LAN and wire connected to a router LAN port. After much effort a client can now connect to the Pi4 AP but cannot ping ...
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86 views

Access website with port in access point

Here's my "starting position": I have a Raspberry Pi 3b+, which is already configured, and I wanted to convert it into an Access Point. I followed this tutorial: https://pimylifeup.com/...
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Can't access other devices over network, only via router unit

I recently set up my Raspberry Pi to act as a router. All is working well when it comes to connected devices accessing the internet. The problem is that my computers don't seem to be allowed/capable ...
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916 views

pivpn install - fails to install iptables-persistent

Installation of pivpn fails due to missing iptables-persistent. Command (run as root) is curl -L https://install.pivpn.io | bash and result is % Total % Received % Xferd Average Speed Time ...
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Can iptables be used to monitor a specific host and port without being a gateway or access point?

I have a Pi 3B+ that I want to use to monitor traffic forwarded from the router to another host (and a specific port) on the network. I am currently using the ethernet interface on the Pi to connect ...
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What does the iptables related operation in step 11 and 7 of this tutorial do?

this tutorial: https://calap.co/blog/how-to-use-raspberry-pi-as-a-vpn-access-point--2018-10-27.html shows how to turn an raspberry pi into a VPN hotspot. I find the iptable configs at step 7 and 11 ...
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191 views

Redirecting Traffic to local mqtt server

I am really confuse about how to redirect. I have 2 WLANs, one use to connect to the router(wln0) and one the I use as AP(wlan1). My aim is to redirect traffic from one client connected to the AP that ...
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3k views

is iptables broken or is it a kernel related issue?

I am trying to setup an access point on a raspberry pi 3 v1.2 using this repository create_ap with this Wifi adapter Bus 001 Device 005: ID 0bda:8178 Realtek Semiconductor Corp. RTL8192CU 802.11n ...
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How do I fix iptables -L error: operation not supported

I have all the newest software. Downloaded the official image yesterday. apt-get upgrade apt-get update rpi-update ..... rebooted, of course Does not help. root@raspberrypi:/home/pi# iptables --...
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349 views

Raspberry Pi Router: NAT & iptables --to-destination is not recognized

I'm struggling to get NAT working on my Raspberry Pi as I intend. Without giving a lot of information, this is the issue I encounter $ sudo iptables -t nat -A PREROUTING -p tcp -i wlan0 --dport 2222 ...
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connecting a LAN device to openvpn through raspberry pi network bridge

hi i have recently set up a raspberry pi to be a network bridge for my router to my room as i thought it would be quicker to do than wait for the delivery of a plug in network adapter in this lock ...
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1answer
374 views

Use the RPi3 with Libreelec to route between 2 networks

I'm using Libreelec on a RPi3 and I would like to use it to route between eth0 and wlan0 too. Network A - 192.168.0.0/24 with Internet access, connected to eth0, my network Network B - 192.168.1.0/24 ...
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How to setup my Pi to proxy all LAN traffic through wifi?

I am quite new to linux and Raspberry Pi world and networking in general. I would like to add a VPN on my Pi, connect my XBOX to my Pi using LAN and have it act as a gateway of sorts so my XBOX is on ...
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Cannot manage wlan0 from desktop

Good day all Pi folks! I have a Pi 3A (buster) which has the onboard Wifi (wlan1) configured as an access point. I installed a second Wifi USB TL-WN725N which comes up as wlan0 and is the outside nat'...
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327 views

AP Bridge VPN IPTABLES rules needed

I have set up an access point with a bridge (bridge: I want to be able to access all other devices within my network) using this How-To (Setting up a Raspberry Pi as an access point - the easy way). ...
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Problem with iptables on buster - neither legacy or nft work

I recently installed buster on a Pi 3 Model B. Trying to setup a von (using pivpn) I realised that iptables is not working. I've learned that there's legacy mode and nft. Here's part of the output ...
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260 views

Using Hamachi messes up with the Pi's networking

I have a Raspberry Pi 3B+ running Raspbian Stretch with no problems since over a year. I recently tried install Hamachi from the official LogMeIn website, and connected it to my LogMeIn Hamachi ...
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166 views

TOR Relay, Routing not working Properly

So I have been trying for a while now using this guide https://pimylifeup.com/raspberry-pi-tor-access-point/ . About 2 years ago I was able to do this, but my SD card corrupted and I had to do it ...
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317 views

How to get the iptables logs when Rpi act as router between ETH1 and ETH0

I have setuped my RPI following the post Sharing the Pi's WiFi connection through the Ethernet port I want to be able to have to source ip, source port, source mac, dest ip, dest port logged by ...
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539 views

OnionPi - No internet connection after adding Iptables rules

I need some help or advices since I've not know what could I do to fix this issue. I've built an onion pi following the adafruit tutorial. This basicly is a wifi hotspot that routes all traffic ...
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183 views

Need help for iptables/filter

Setup: RPi connected to router using ethernet on subnet 192.168.0.0/24 which is also an access point access on subnet 192.168.43.0/24 So basically devices will connect to my Rpi for VPN traffic I ...
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219 views

Buster: Route traffic eth0<>wlan1

I followed these excellent and simple instructions to set up a WiFi repeater on Buster: [Access point as WiFi router/repeater with additional WiFi-dongle However when I rebooted the eth0 access was ...
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50 views

iptables blocking access to a service (Cloud9)

I want to create a Cloud9 server using a raspberry pi. I download the repository and it ran just fine in the port 8181 as it shows below. I could even access the panel from the Raspberry using ...
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443 views

Help in setup for RPi3 for internet connection sharing to eth0 and wlan0 (from eth1)

I have already setup the RPi3 for share my internet connection (from eth1 usb ethernet dongle) to my eth0 (Rpi3 internal ethernet port). The "ASCII diagram" is this: Internet -> Fiber Router (192....
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310 views

Cannot connect Deluge Thin Client to RPie Deluge Server

I'm trying to setup my RPi 3 (buster) with a deluge server and a VPN (Private Internet Access) I have followed theses guides https://www.raspberrypi.org/forums/viewtopic.php?f=63&t=223589 https:/...
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3k views

PiVPN client cant connect to local network

I've managed to setup PiVPN on a Raspberry Pi 3+ and I can connect from the outside, I even have Internet access, but I don't have access to the local network. These VLANs are created under my USG ...
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Log input traffic using iptables

Is it possible to log input traffic coming to wired Ethernet port using iptables, without syslog running? I want to know about appearance of particular MAC address WiFi node in range of my home WiFi ...
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583 views

Using cgroup module in iptables cause "no chain by that name" error message

Trying to use cgroup module in iptables rule cause "No chain/target/match by that name" message. I'm using: Linux raspberrypi 4.19.42-v7+ #1219 SMP Tue May 14 21:20:58 BST 2019 armv7l GNU/Linux ...
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274 views

How do I forward port 19132 from a subnet on eth0 to wlan0?

So I currently have a Minecraft server running on a computer in my house and would like to port forward it. However, the computer is in a separate room to the router and doesn't have WiFi. In order to ...
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525 views

Pi is listening but nothing except ssh can connect

Ok, so I'm stumped. I have a new Raspbian install on a Model B Rev 2 and I can ssh using the IP Address just fine, but I can't connect on any other port outside the pi. Some details: pi@dogwood:~ $ ...
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How to allow access from OpenVPN set on eth0 to wlan0

So I have the following configuration: +---------------------+ +----------------------------------+ | 10.10.10.* | | 192.168.100.*...
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629 views

How to connect a ethernet device(having its own static I.p and netmask) via internet by my laptop?

I have a device which is used to monitor analog sensor data(Micron optics sm130 ) with ethernet port available. Its works fine if If I connect it with my laptop using ethernet cable and by configuring ...
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207 views

How to connect a ethernet device(having its own static I.p and netmask) wirelessly by my laptop?

I have a device which is used to monitor analog sensor data(Micron optics sm130 ) with ethernet port available. It has Static IP as 10.0.0.126 Netmask as 255.255.255.0 DHCP server disabled Its ...
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Raspberry Pi DHCP Server: clients not getting IP addresses

I am relatively new to networking, so please bear with me. For a purely educational project, I've set up a network where the Raspberry Pi 3 running Raspbian Stretch is to function both as a router and ...
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87 views

iptables doesn't recognise REDIRECT as target

Trying to redirect traffic using iptables v1.6 and the following line: iptables -t nat -A PREROUTING -p udp --dport 67 -j REDIRECT --to-port 6767 which results in the following output: iptables: No ...
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How can I gain internet access after a valid login? [duplicate]

I set up my iptables on my raspberry pi to redirect ALL traffic to localhost where my landing page is hosted, so that people on my AP can't access internet without logging in(correctly) first. On the ...
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3k views

How can I redirect HTTP requests to my captive portal/webserver using iptables

I'm working on a project where we need to use the RPi as a Wifi access point, which I got to work. I can get on the internet through the RPi and can also connect my Apache webserver (which should be ...
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1answer
349 views

Using the Raspberry Pi and OpenVPN

I have had a burning issue with my VPN setup and I am hoping someone will be able to help, or advise. So I currently have a DD-WRT router with an OpenVPN client setup serving my devices. However the ...
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1answer
403 views

Raspberry Pi not blocking sites based on iptables rules

I am working on a network security project that can inspect network traffic before forwarding and accepting traffic from the internet. I have a R-Pi B+ Model running raspbian stretch lite where the ...
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471 views

Raspberry Pi Wifi Repeater – Block Ads

I configured my raspberry pi as a wireless repeater (using hostapd and dnsmasq). Now I wonder how I could use it to block known ad-servers? What would be the best way? Using iptables? Or setting up ...
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1answer
362 views

RaspberryPi VPN Router (eth0) works in Wired connections but not in Wireless ones

I have this following setup: Office Network: 192.168.9.x --> Subnet for all Wired Connections 192.168.9.1 --> Wired Gateway IP 192.168.10.x --> Subnet for all Wireless Connections 192....
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1answer
437 views

How does 'iptables rules table' work with hotspot?

I'm using iptables rule for censorship. I created hotspot.When I try to connect website on raspberry with mother network, It's working. But I try on pc with hotspot my iptable rules isn't working. ...
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1answer
5k views

VPN Passthrough two ethernet interface

I'm a quite new in the network my internet acces have a proxy so to by-pass it I use a VPN hosted on my VPS. I use the OpenVPN Client software for all my devices. (Windows, Android, Linux) I got a ...
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1answer
1k views

Iptables and reverse ssh tunnel to connect with IP camera

I need to be able to access an IP camera that is on the same local network as a raspberry. I do not have access from the outside because it is a mobile data network that does not give me public IP or ...
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1answer
383 views

Forward port (80) to another local network IP

I have a Rpi, which is behind NAT (4G carrier), but I've managed to expose ports to be accessible from the internet using https://www.remot3.it. I want to use the Rpi as proxy, so I can access a IP ...
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1answer
3k views

Can't ping certain devices on my network [closed]

I've got a rather odd problem. The Raspberry Pi is connected fine to the internet i.e. I can ping google.com and browse the web without any problem. However, the problem for me is that I am unable to ...
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329 views

Make a program to run on a specific network interface?

Short question: How can you make only one specific program run off wlan0 and leave everything else to run off the ethernet? Long question: I've been using my Raspberry Pi for a while now and I love ...