Questions tagged [router]

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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Understanding Netplan / NIC

I have a set of 5 static ip addresses. Currently I only have 1 server, so I want to route 2 static IP's to the same server. At the same time I still want the server to be part of the local network. ...
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24 views

How to find out the chipset of my Router?

Trying to install wifi on my fresh debian I got confused. It seems to be more complex than I thought. As far as I understood it correct I need to manually download drivers for my router, that depend ...
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Setup OpenVPN connection to Netgear R8500 Router on Pop!_OS (Ubuntu) 19.10

As the description says, I want to set up an OpenVPN connection which is available through my Netgear R8500 router for use on my laptop which is running Pop!_OS. I don't think the fact that it's Pop!...
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20 views

Where to find (or how to build) rpcapd for my ARM 7 based linux FreshTomato router

I had previously found a prebuilt binary for my older MIPS based router running Linux/TomatoUSB, which worked great. Now of course that binary won't work on my newer ARM based router (Asus AC3200). ...
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30 views

4G LTE Device [USB Tethering]--> Raspberry Pi [Ethernet]--> Router, is this possible?

Ok, some background info first: 1) I run a Debian fork (Netrunner Blackbird, right now) for my daily and this has allowed me to get fairly comfortable with Terminals (Konsole on KDE, mostly)... 2) I ...
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14 views

Linux disconnect two subnetworks

I have one router with 3 networkcards (one goes global and two are intern) and I would like to know if i enabled in the router nat.ipv4.ip_forward = 1 so does a host on subnet 1 cann reach a host on ...
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How to open SSH port 22 to connect medusa to my router ip

I've been learning how to brute force my own router password through medusa and I've encountered the following error: NOTICE: ssh.mod: failed to connect, port 22 was not open on 192.168.0.1 note ...
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20 views

Why isn't my NAS advertising its IPv6 addresses?

Before my old router died, my NAS could accept incoming connections for any of its global (self-assigned) IPv6 addresses. After switching to my ISP's modem/router, incoming IPv6 connections no longer ...
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54 views

woeful network throughput with raspbian router on Raspberry Pi 4 [closed]

I thought I had a nice rpi4 router set up, but I've discovered that the throughput is crap. From any device, rpi4 included, I can do a speedtest and show a 130mbps connection to the internet. with ...
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1answer
154 views

Telnet Login Incorrect - Ubuntu - Connnecting to Router

i cannot login to the router using telnet and getting login incorrect in Ubuntu 18.x what's the problem root@ubuntu:/home/ezzat# telnet 192.168.1.1 Trying 192.168.1.1... Connected to 192.168.1.1. ...
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Linux gateway with one interface and aliases

Hello I am trying to use a linux machine as gateway for other machines in the same network using iptables, these are the configurations related to both machines: Machine A (This is the one I want to ...
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1answer
167 views

How to share “internet hotspot” access to a network on a second wifi adapter?

Can anyone assist with a linux routing question? Essentially I want to use an Ubuntu laptop to provide internet access to an attached network. I have a Raspberry pi on a wifi network (192.168.42.0/24)...
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35 views

ICMP “TTL expired in transit” and “Fragmentation required” messages when forwarding is disabled

I have a server with IPv4 forwarding(routing) disabled: # sysctl net.ipv4.ip_forward net.ipv4.ip_forward = 0 # Is there a circumstance where such server sends out ICMP 11/0(TTL expired in transit) ...
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1answer
41 views

asus ac68 merlin curl ignore http_proxy

asus ac68 is a router. I have installed the latest firmware(merlin) 384.11. curl -V curl 7.64.1 (arm-unknown-linux-gnu) libcurl/7.64.1 OpenSSL/1.0.2r zlib/1.2.5 Release-Date: 2019-03-27 Protocols: ...
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Elementary crashes router when plug in Ethernet cable; Windows, no problem

I've already tried this more than twice. I can connect my laptop via Ethernet cable to the router on Windows, but when I do so on Elementary, the router instantly crashes and reboots. I can use WiFi ...
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21 views

how to find snmp device is switch, router or printer?

I am discovery Network devices any I have some of the information like IpAddress snmpVersion Community String Udp host port using above information I am able to discover Network device but how I ...
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1answer
40 views

Can't access SNMP stack on rasp pi through router from WAN

Background I am running the following On my laptop the very latest version of arch linux with all the latest updates. It is from this laptop that I am querying an SNMP stack on a rasp pi $ uname -...
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1answer
720 views

OpenWRT on a router with Broadcom wireless chip

I found a note on openwrt.org / without timestamp / unclear if its very old Wiki entry Broadcom has not released any FOSS drivers. Broadcom doesn’t support open-source much at all. (..) ...
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13 views

Does it make a difference if a the remote LAN proxy is the router or non-router?

Remote LANs are configured with routers that are WAN accessible through SSH for the purpose of http tunneling to enable the 'mother ship' to access remote LAN devices with a web browser. If the ...
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1answer
84 views

How do I connect to a QNAP [closed]

BACKGROUND DETAILS: I've inhereted a QNAP TS-459U-RP. I currently have it connected to my home router via an ethernet/rj45 cable. My computer is connected to the same router. How do I access the ...
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1answer
778 views

ssh works only one way

I have two computers, one is running Debian GNU/Linux 9 and the other Ubuntu 18.04.1 LTS. I have installed openssh on both computers. sudo apt install openssh-client sudo apt install openssh-server ...
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192 views

Integrating Z-Wave into Router

Although it is possible to add another box (Z-Wave hub)to home automation, it would be preferable to integrate Z-Wave communications functionality into a USB router. Are there any examples or ...
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571 views

IPv6-subnets with systemd-networkd

My new ISP gives me a public IPv6 address with a /56 prefix to play around: 2001:b:c:d:5:6:7:8/56 I would like to create two subnets divided by a linux server like this: internet - fritzbox - ...
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1answer
2k views

What does rx_csum_offload_errors mean?

I asked same question on serverfault but since I'm not sure where is proper to ask that I'm asking same question here. I see too many rx_csum_offload_errors on ethtool output and it constantly ...
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1answer
464 views

IPv6 routing Public to a subnetwork

Doing Linux/Debian IPV6 Routing from my vendor to a client not working. IPV4 NAT/routing is reliably working using iptables and dnsmasq, however, even with forwarding enabled on IPv6 I can't make it ...
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1answer
275 views

Unable to access modem IP through Linksys EA2700 router

Router IP: 192.168.1.1 (Linksys EA2700) Modem IP: 192.168.100.1 (Technicolor TC4350) Everything here refers to a wired configuration. Entering the modem IP in a browser address bar returns an ...
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1answer
57 views

How to avoid forwarding ports?

I am doing UDP socket programming in C. In order to listen to a port, I need to forward ports in my router. My question is how to avoid doing that and still being able to communicate over the internet,...
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1answer
750 views

How to get WAN IP of a router on double NAT (not a public IP)?

I am on double NAT (behind 2 routers). I known how to get the public IP by visiting some webpages or use dig command. Yes I known WAN IP usually same as the public IP. I talk about WAN IP #2 that ...
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218 views

how to prevent dnsmasq from completely failing when one of the configured interfaces is unplugged?

I'm running dnsmasq on Arch Linux on a router with 4 LAN ports for wired, wireless, DMZ and admin_interface. dnsmasq is my dhcp server for my LAN (as well as providing dns functions). I do not always ...
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3answers
3k views

Reboot over ssh

I'm trying to reboot a Teltonika RTU950 using ssh. I can log in as root via ssh and then reboot the router fine. However if i try to send the reboot command over ssh it does not work. ssh root@...
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1answer
75 views

How do I determine what network interface this is and why it's blocking me from a subnet? [closed]

My router has my network separated into two subnets - 192.168.1.0/24 for wired and 192.168.2.0/24 for wireless clients. My home server lives at 192.168.1.42 and is not reachable from a client on the ...
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74 views

Open WRT mini router: mobile modem installation

The GL-AR300M mini router runs a Linux based Open WRT system, making it highly configurable. Recently i have been trying to use the 3G modem Option Globetrotter GI0505 i have with it, but without ...
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2answers
438 views

Send TCP packet to the same source [closed]

I want to design a system which reduce travel time of packet what is happening in reality is I send a SYN bit from client side, this bit travel through router then to server and server reply SYN+ACK ...
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1answer
770 views

OpenWRT add permanent virtual interface

I have OpenWRT on my router (Turris Omnia). How can I add permanent virtual if or second IP to eth0 (wan)? If I use ip a a or ifconfig virtual interface will disappear after network restart or reboot. ...
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1answer
253 views

How to reset router through command line browser? [closed]

I need to reset router and I just get access with ssh to raspberry in local network with router. I'm trying with elinks and w3m browser but I can't see any option, maybe because the router's control ...
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1answer
170 views

Broadcom Chipset Router - Reset Base MAC address [OpenWRT]

I have a Dlink DSL-2750U (Hardware version: C1) router. The router seems to have forgotten its MAC address and is showing the base MAC address as 00:10:18:00:00:00 which is the default. I have ...
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1answer
2k views

Use dnsmasq to pushing routes to my clients on a small local network

I'm trying to use dnsmasq to pushing routes to my clients on a small local network. However my clients (Server #1, #2 and #3) can not use these routes. The dnsmasq service is running and I do not ...
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1answer
433 views

Compiled modules support for openWRT

In order to add driver for my wireless adapter, Bus 001 Device 002: ID 0bda:8172 Realtek Semiconductor Corp. RTL8191SU 802.11n WLAN Adapter I am building openWRT for my GL.iNet AR150. The ...
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1answer
1k views

CentOS routing between multiple subnet

for school we have to do a linux routing vm between 4 subnet but the routing only works in one way. Let me explain, here is a schematic: The router in the center is a CentOS 7 fully up-to-date with 4 ...
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0answers
112 views

internet access with ping has 100% loss

LAST BREAKTHROUGH -> see the tshark results below for some clue Hi, at home I have the following setup: Internet - NAS (Ubuntu 16.04.4 LTS) - LAN (Asus N56U WiFi) - family users. NAS connects ...
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3k views

Correct way to configure CentOS7 NAT router?

The Background I have searched and scoured the web for information on the proper configuration of a NAT host running CentOS7 and firewalld for more than one private network. I have a working ...
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1answer
156 views

Are separate unidirectional uplink and downlink interfaces on Linux possible?

I'm using radio communication between access point and linux station. When machine only sends packets then connection quality is okay. The same can be said about situation when machine only downloads ...
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371 views

Cannot change hostname of raspberry pi in local network

I have a clean install of the debian-based OSMC os on a raspberry pi. I've manually set a static IP: $ ifconfig wlan0 wlan0: flags=-28605<UP,BROADCAST,RUNNING,MULTICAST,DYNAMIC> mtu 1500 ...
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2answers
8k views

Accessing router from a command line [closed]

Is it possible to access a router and login from a command line ? I'm well aware of firefox 192.168.1.1 but are there parameters that can be added to this so that it's an immediate login from the ...
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3answers
6k views

Why does traceroute display many ip addresses for the same hop?

Here is the route path from my home to sina.com.cn. traceroute -n sina.com.cn traceroute to sina.com.cn (202.108.33.60), 30 hops max, 60 byte packets 1 192.168.31.1 0.476 ms 0.587 ms 0.695 ms ...
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2answers
5k views

Can i list unmounted drives without fdisk or lsblk?

I have an Inteno dg200 Router running some Iopsys linux version (kernel 3.14 or so, I believe) I've had some trouble getting a fileshare running using the USB ports and my external harddrive. The ...
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1answer
310 views

Any Distros Built for Layer 3 Switching / Routing?

I want to be able to have a decent router that can be highly configured and handle a fair amount of traffic while being secure. Before I spend money on some dedicated routing hardware/software, is it ...
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138 views

dnsmasq has no effect on router itself

here is my resolv.conf nameserver 127.0.0.1 nameserver isp_provided Here is my dnsmasq.conf, which will do DHCP also: user=nobody bind-dynamic interface=br0 interface=ppp1* no-dhcp-interface=ppp1* ...
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1answer
3k views

How do I find out the build version to download with LEDE?

Following on the footsteps of this question, which I was able to figure out with the device page for my device. I want to know if it is possible to find out he build information without using the web ...
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1answer
448 views

What happened to the armv7l build of LEDE?

uname -a shows, Linux LEDE 4.4.71 #0 SMP Wed Jun 7 19:24:41 2017 armv7l GNU/Linux But I don't see an armv7 even available on the build targets for 17.01.4. It's the same major and minor build number....