Questions about running a UNIX-like OS (typically Linux) on wired and wireless routers, including flashing, creating, and configuring custom firmware.

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OpenWrt bricked router is not connected via USB to serial cable

I am a newbie in OpenWrt development. I have a problem in my router when I try to upgrade my router (TP-Link TL-WDR-3600) to openwrt firmware via web ui. Now my router is bricked and I can't ...
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2answers
37 views

Unlocking all ports in a router when using Linux

I heard that Linux's open ports are not very vulnerable, so a normal desktop Linux installation doesn't need a firewall. Still, my router (Dlink) blocks some ports, even in LAN. Would it be a bad ...
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0answers
44 views

Flash OpenWrt Routers from Telnet

I have two routers. One has Chaos Calmer and the other has Attitude Adjustment. When I turn them on and check arp, nothing comes up. When I check route, the hardware address says (incomplete) but the ...
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0answers
33 views

OpenWrt with Nodogsplash

I have a web application in MVC4 for Hot Spot Management system. I using it with OpenWrt and Nodogsplash, Now i need to authenticate the users in to external website. Is there any way to allow to ...
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0answers
32 views

Arch Linux Wireless Problems

I've got a problem with my wireless connection, the wireless bar is always showing 3 bars, I am using NetworkManager with dhclient and the strangest thing happens, I am getting a huge lag spike every ...
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2answers
69 views

Do I want a Repeater or a Bridge? (OpenWrt)

I'm setting up a network with openwrt. I have a router that I have set up for wifi which I will use as an access point. I want to add another router to my network so that the two can exchange traffic ...
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1answer
26 views

Transmitted packets on a LAN interface may increase received packets on WAN interface?

Supose a simple home router gateway and the following: lan0 - Network interface responsible for LAN-side of the router wan0 - Network interface responsible for WAN-side of the router A default route ...
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1answer
75 views

Open Wrt with nodogsplash

I am using OpenWrt in my TP_Link TL-WRD3600 router. I have already set up a hotspot plugin (Nodogsplash) on my router. Now I need to allow access to some website before authentication on the splash ...
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0answers
24 views

Is there any way to configure fully automated proxyclient for workstations?

My network diagram is similar to above image; pc-router is also acting as firewall & I'm running squid on it. pc-router is running debian Vlan having workstations running fedora, ubuntu and ...
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2answers
347 views

OpenVPN and MerlinWRT

My ASUS router is flashed with MerlinWRT. This configuration used to work, however now when I connect I get, $ sudo openvpn ./client1.ovpn OpenVPN 2.3.2 x86_64-pc-linux-gnu [SSL (OpenSSL)] [LZO] ...
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1answer
41 views

How to use the same Wi-Fi adapter to connect to a wireless network, and broadcast an AP at the same time?

I have a Wi-Fi router that runs OpenWRT. It connects to my home Wi-Fi and uses it for Internet access. At the same time, it broadcasts an access point itself and it is bridged with its LAN so other ...
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0answers
28 views

load balance router

i am do live far away from the local exchange and the DSL is quite unstable. it can get days without service. so i decided to invest in a usb 3g stick (10GB/month, ppp0 in my system) and a usb wifi ...
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1answer
44 views

dd wrt firmwire file prompt password while extracting

I am a newbie in using dd wrt firmware development. Last day i download a dd wrt firmware dd-wrt.v24-21676_NEWD-2_K2.6_mini-e900.bin for Linksys E 900 router. I need to extract this image for ...
0
votes
1answer
52 views

Setting permissions on SMB

My router (Netgear DGN-2200-64) has a USB port usable as SMB storage (with the default firmware - I guess it's Linux under the hood). I plugged in an old flash disk (FAT formatted I think) & set ...
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0answers
30 views

Switch gateways on failure (WRT)

I have two WRT routers each connected to their own wireless gateway (cell phone and hotspot across the street). The routers lans are bridged with WDS and on the same subnet, so clients can connect to ...
2
votes
2answers
62 views

How to get IPs via DHCP, through a router from another DHCP server?

ISP -> OpenBSD box -> Wireless router We have an OpenBSD machine that connects directly to the internet, has dhcp/dns cache "server" on it, and forwards the connection to clients via ethernet ...
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0answers
261 views

CentOS as home network router: IPTables Port Forwarding failure

I have currently set up a home server with a CentOS 6.6 installation on it. The server has two NIC interfaces which I'm using it as my router and DHCP server. Here's a diagram showing the network ...
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1answer
42 views

Is there a way to switch interface only by interface name?

I am currently working on how to switch network interface in Linux environment. And i am experimenting on switching network interface by switching default gateway, for example switch to wlan0 when ...
2
votes
1answer
93 views

On a router, what decides if a packet should be forwarded or directed into the router itself?

I'm trying to learn how packet routing works on a linux-based router (OpenWRT in my case) a bit better for setting up a few projects/just-learning. Referencing the below chart, I'll break this into ...
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0answers
54 views

static ip address in yast

I think that I set the FQDN for the server in yast. How do I set the static IP address with yast? I go to network devices => network settings, see my NIC: YaST2 - lan @ arrakis Network Settings ...
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2answers
65 views

Get Any Interface's Router Address

How can I know what the router's address is when I am on multiple interface? I know by using netstat -rn I can have the dominating interface's gateway, which is the router's address. But what about ...
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1answer
110 views

Can't connect Wifi devices to router when wired Ethernet computer is connected

I have a arch desktop with samba and ssh configured connected to a WiFi router/ADSL2 modem via ethernet. I was not able to connect any of my mobile devices (phones and tablet) or my netbook (running ...
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0answers
85 views

iptables - How to remove connection tracking

I'm using this command for redirect all web traffic (http) into my local web server iptables -t nat -I PREROUTING -p tcp --dport 80 -j DNAT --to 192.168.11.100 Then i test, access a website and got ...
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2answers
553 views

iptables - Redirect web traffic to LAN Server

I have a webserver which is running on ip address 192.168.11.100 How can i use iptables to redirect all web traffic (http and https) to my webserver on LAN? After that i want to add except list mac ...
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1answer
376 views

iptables - Redirect except list MAC Address

I'm using iptables on my router to redirect all web traffic to my page. But i don't know how to except my mac address list. I did command like this: iptables -t nat -A PREROUTING -m mac ! ...
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1answer
456 views

OpenWRT configuring access point Archer C7v2

I am trying to configure OpenWRT Barrier Breaker on Archer C7v2 to act as a dumb access point, so the WAN ethernet port will be connected to my network, and anything connected to wifi or the other LAN ...
1
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1answer
174 views

Linux as a router: Sending ICMPv4 messages “net unreachable” and “host unreachable”

I want routers based on GNU/Linux to sent at least those ICMPv4 messages: net unreachable, host unreachable. Especially the host unrechable message is important to me: If a router resides in the same ...
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0answers
75 views

ping on linux vs ping on mikrotik

I have ubuntu server 14.04, with two network cards (LAN and WAN). I made a masquerate for WAN card. I have internet access from a host within the Lan of router. I do a ping to 8.8.8.8 and try to ...
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1answer
217 views

Internet is not working when VPN is up

I'd like to redirect all trafic through VPN, but it doesn't work at all. server: RT-N16 [TomatoUSB v1.28.0000 MIPSR2-112 K26 USB AIO] client: Ubuntu 14.04.1 server config: # Automatically ...
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0answers
71 views

Seems that my router accessed one of my Linux systems, what does it mean?

I just ran the last command on two of my systems and there are weird entries: user pts/2 dsldevice.lan Sun Dec 28 22:59:35 2014 - Tue Dec 30 00:40:41 2014 (1+01:41) Notice: dsldevice.lan ...
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1answer
123 views

Debian server makes internet connection drop

I have setup a small home server / NAS running Debian 7. The server is connected directly to the router with a static IP set in the router's control panel. There are no port forwarding rules set for ...
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1answer
42 views

Finding out if my system is being used as a bot by looking at ifconfig?

Recently, I have often been suspicious that my router (a linux box) might have been used as a bot for spam blowout or something of that quality because I may have misconfigured my iptables rules by ...
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0answers
204 views

iptables IP address (source and destination IP address) mangling

I tried to understand the concept of iptables mangling part, but somehow failed to understand the IP header manipulative section. For example: Below is the system scenario which I'm trying to ...
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0answers
71 views

Gargoyle repeater bridge channel hopping

I have the Linux-based Gargoyle firmware running on an old TP-Link router, serving as a Repeater bridge to extend the range of a WIFI access point. Do I need to lock the original access point to a ...
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0answers
31 views

Bandwidth stats on wifi for each network?

Is it posible to have the bandwidth usage of the wifi connection for each network I use? Currently I have vnstat instaled on my MacBook Pro retina runing Yosemite. It works well but I have the usage ...
2
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0answers
59 views

Desktop environment makes my router crash, why?

I'm a beginner Arch Linux user. Last week I decided to install it on my desktop too (Windows 8 dual boot) but for some reasons it makes my router go crazy! I have set it up with Ethernet connection ...
2
votes
1answer
134 views

How to flash a router from FreeWRT to OpenWrt?

How can I change the firmware on a router from FreeWRT to OpenWrt? The router is a Linksys WRT54GL, so it should have enough memory for OpenWrt and I have SSH connection as root to the system.
2
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0answers
122 views

Configuring default static routes with RIPv2

I am currently working on an assignment managing a smaller virtual network with virtual box and tiny core Linux. (Using quagga) I am supposed to let RIP handle the default routing, though I cannot ...
2
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2answers
1k views

How would I build a linux based router?

I am looking into building a Linux based router out of a home-built Linux server. I don't have much experience with the software required however. I would like the server to run the following ...
3
votes
1answer
7k views

SSH: Network is unreachable (caused by router)

I've searched solution in Google for 3 days, when I decided to write here. I have a router, so in my house is WLAN. I use laptop when I stay at home. In another city in my office I have a second ...
3
votes
1answer
576 views

Spoof current MAC address to a known address to trick router and register device

I want to connect to a device to the internet, a Roku player, that has its own MAC address. The network that I currently have access to requires that I login using my credentials prior to being ...
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0answers
512 views

Weird Wi-Fi connection issue on Linux Mint 16

We have a LG-R590 laptop and an AirTies 5343 WLAN router at home. When the router broadcasts the SSID of the wireless home network I cannot connect to the network automatically, I have to connect to ...
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1answer
179 views

Debian server doesn't show in DHCP list on router

I have a Raspberry Pi running Raspbian which is connected over ethernet to my router. The router has been running both with DCHP and Static IP addresses and over the local LAN I can connect fine over ...
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4answers
2k views

Converting Linux into a Router- Traffic from eth0:0 to eth0

So I have been trying to convert my linux box which is running Mint into an router. eth0 has a public address that has 71.xx.xx.xx for an IP addr. I created an eth0:0 and set it an IP address , ...
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1answer
1k views

Are router firmware based on linux? [closed]

I was reading this book "the linux command line" and in the introduction it states that linux is internet backbone starting from servers to router infrastructure. That got me thinking to what extent ...
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0answers
154 views

Linux firewall distro that can configure a vpn connection as a WAN interface?

I'd like to setup linux as a router w/firewall between My machine and the internet. The linux box should connect to a VPN account using OpenVPN on boot (managed to get that done). Then the firewall ...
2
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1answer
2k views

Redirecting Request on Device in Access Point Mode

I have a Raspberry Pi with a wifi dongle that is configured for Access Point mode (wifi hotspot). When a user is connected, I want to redirect any url they enter to a specified IP (the devices ...
3
votes
0answers
36 views

Control browser from command line [duplicate]

I have an old router that I have set up as an AP on my home network. For some reason it loses connectivity every few days and needs a reboot. I would like to set up a script to run once every night ...
0
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1answer
126 views

Testing a Linux router on Laptop with one NIC [closed]

So, I have these instructions on converting my Linux machine to a router using (enable IP forwarding, NAT). Now my laptop has only one NIC and I want to test this setup. Any ideas how I can do this? ...
4
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1answer
226 views

ARP request with wrong IP address

I have a strange problem with a Linux router. The setup is like this: host1 === Linux router === host2 a.b.c.d --- a.b.c.e/g.h.i.j --- g.i.h.k Every five minutes host1 tries to reach host2. ...