Questions tagged [router]

A device that connects two or more networks and is capable of forwarding data packets to a destination based on information contained within a packet and internal routing tables.

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32 views

Bad WLAN routing behaviour when switching AP

I have come across a number of variations on the problem described below with router/access-points and WiFi range extenders from various manufacturers. All devices are wireless. LAN/WLAN made up of ...
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Router unable to obtain IP [closed]

I own a d-link router model DSL-2877AL.. used to work flawlessly in the past 8 months but recently the routers internet light will always stay red which indicates a failed PPPoe negotiation.. VDSL2 ...
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My dynamic dns behaves weird [migrated]

I have builded a raspberry pi ubuntu all-in-one server (ftp, apache, ssh, vnc) and used dynamic dns to be able to use it remotely. When i try to connect it from lan ip it connects successfully from my ...
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IPv6 network fails on Linux router

IPv6 fails on ARMBIAN router I have a armbian box (RK3328 board + 1GB DDR3 + 8GB eMMC). The box has only one NIC, and acts as a linux one-armed router. IPv4 network works normally, but IPv6 fails. I ...
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host unable to connect with self through its public ip

I'm on a home network with 2 machines behind a sagemcom router. One machine is a server (RPI) running ubuntu 1804 the other is a regular PC. I've only got a dynamic public ip address (say 1.2.3.4) I'...
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Assign an IP address to each router’s interface

I have to assign an IP address to each router's interface. This is the network: You can find the network design here This is what I have: N1 is a private network with 1000 hosts: 192.168.0.0/22 N2 ...
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2answers
117 views

Why doesn't router forward IP packets in a local network?

I've got two hosts in one local network: 192.168.31.10 and 192.168.31.11, their gateway both are 192.168.31.1. The route table on 192.168.31.10 is as below: 0.0.0.0 0.0.0.0 192.168.31.1 192.168....
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1answer
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Basic setup of an Aerohive AP245X via CLI

I recently acquired an Aerohive AP245X (Rev. A) secondhand without a GUI of any sort. I reset it by pressing the button for however long. Now I want to set it up as a normal Wi-Fi router w/o any ...
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4answers
78 views

What are the disadvantages if routers (layer 3) didn't existed? [closed]

I'm new to networking and I'm trying my best to understand some concepts. Therefore, if routers never existed and we had only layer 2 switches, what would be the problems that arise and cannot be ...
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How can i add reserve ip set in my router to my VMware Ubuntu Server [duplicate]

Hi I'm trying to connect to VMware ubuntu server to my router but none of it seems to work since it doesn't have my vmware ip shown in my router. I've tried adding the ip manually and resetting my ...
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How do routers select ports for Port NAT?

Suppose my computer (LAN address 192.168.0.10), from its local port 56789, accesses 8.8.8.8 on port 1234. If I understand correctly, the following things will happen: My computer sends a packet with ...
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Router using WAN IP address as source address, even when originating from other LAN devices

I switched to a new router (with less possible configuration) today, and now all packets sent to my server have the source address set to the router's WAN IP address. In other words, with this new ...
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Internal routing of external port forwarded domain on router TP-Link TL-ER5120 [duplicate]

I have two internet access (one fiber one backup vdsl2), and I use a multiwan router to link them to the rest of my network. My internal network contain a server that is accessible from the internet ...
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1answer
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Virtual network interface in Windows

i am trying to setup a VPN server tunnel on my windows PC so that i can connect to it using remote client VPN hence routing traffic through that tunnel client = android
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1answer
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Port forward to one of multiple devices depending on which one is connected? [closed]

I'm running FreshTomato Firmware 2020.2 K26ARM USB AIO-64K but this question is generally about "advanced use cases" of port forwarding. Is it possible to set up router policies so that traffic ...
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1answer
37 views

Ping between hosts with separate subnet

I have two hosts with different subnet Host1(Linux) has Ip Address of 172.29.1.xxx Host2 has IP Address of 192.168.1.xxx Host2 with 192 address can ping the host1 and all the servers with 172 ...
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Cisco ISR4431 router randomly reboots

I have a Cisco ISR4431 acting internet edge router that has been randomly rebooting every 5 days or so. When it reboots it takes anywhere from 10-60 minutes before it is back up and network traffic ...
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2answers
170 views

WiFi: Frequencies that map to non-overlapping 2.4 GHz channels 1,6 & 11

I'm configuring a wireless router. I know the non-ovelapping channels are 1,6 & 11. However, my router only specifies frequencies that I can select, not channels. What are the frequencies that ...
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apache server in ubuntu 16.04 is not responding to port-forwarding in router

apache server in ubuntu 16.04 is not responding to port-forwarding in router i tried a lot to make apache server to make it repond to port-forwarding like changing the settings of ufw and apache sever ...
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Linksys WRT110 router: do reserved IPs need to be in IP Address Range?

I'm using a Linksys WRT110 RangePlus Wireless Router. My question is: do IPs reserved under DHCP Reservation need to be within the IP Address Range? I'd like to reserve a consistent IP for my laptop. ...
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1answer
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How does a router route an ip packet if two subnets are attached with different netmasks but same prefix

Imagine we have 3 subnets attached to one router: Host A: 192.168.1.1 Netmask: 255.255.255.0 Host B: 192.168.2.2 Netmask: 255.255.255.0 Host C: 192.168.2.3 Netmask: 255.255.0.0 If Host A sends an IP ...
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1answer
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Requesting help / assistance on NAT VyOS configuration

i would like to request help / assistance on NAT VyOS configuration. i'm new to it, so please bear with me :) please see link for the sample diagram. https://i.ibb.co/kx1N6pD/NAT.png from the ...
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1answer
20 views

Is it possible to capture packets of router which i connected through wifi of my laptop

I want to capture all traffic of router I can only connect with wifi no physical access and I do have access to configuration page of router
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1answer
40 views

VPN setup behind router windows 2016

I have been trying to follow tutorials to setup VPNs on Windows Server 2016. However, they are not really the case for setting up VPN for a server behind router. Is it possible to do this and how?
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DNS Settings Overidden by ISP during PPPOE Authentication?

I have a TP Link SafeStream router, I have set my DNS setting to 1.1.1.1 in my router under the WAN configuration, in the same page that the PPPOE Authentication is. Now it is connecting properly, ...
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1answer
19 views

Automatic switching between ethernet and 4G on router? [closed]

I have a router which have both incoming internet through Ethernet and 4G via USB. My fiber connection is unstable, and I have gotten a courtesy 4G SIM from my ISP. Is it possible to set up the router ...
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15 views

Router receives ICMP requests for reverse IP

I have a router connected directly to my ISP's modem which provides me with several public static IPs, say 99.88.77.105/29 where 99.88.77.110 is the assigned gateway. With all firewall rules in place ...
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Can't connect VM's brouser to Internet in GNS3

I have a problem with connection Windows VM to internet in GNS3. I want to get access to the Internet from a browser. I've configured nat and dhcp on cisco router. VM can ping 8.8.8.8, but can't "...
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1answer
22 views

How to make old router as access point? [closed]

I have installed a new router at my home, the new router has 4 ports. And the ISP only allowed for one port to have internet connection using ethernet. That port is taken by another person, and now ...
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80 views

How can I pass DHCP request via router from ESXI virtual switch?

I have 3 servers PFSENSE server which has 4 interfaces: WAN LAN – 10.0.0.0/24 Servers (vlan) - 10.0.1.0/24, VLAN tag 1 DMZ (vlan) - 192.168.1.1/24, VLAN tag 2 ESXI server which has 1 NIC and ...
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Authenticating Windows user via Active Directory NPS to remotely access Cisco router (MS-CHAPv2 and/or PEAP)

I have Googled for hours and have not found my answer. I have found information on PEAP and MS-CHAPv2 of course, but nothing for my specific situation (which to me seems like something that should be ...
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accessing github in powershell/terminal resolves to localhost

So I live in China and am using shadowsocksR on my router to bypass the Great firewall. Today when i try to update flutter using the powershell in VScode the powershell gives the error "fatal: ...
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1answer
23 views

Can separate network segments connected by a router be considered on the same segment? [closed]

Say you have two or more network segments that are connected by a router, or perhaps multiple segments connected by multiple routers connected together by a router. Would the devices on the ...
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Internet packages went crazy

So... I have a router (wireless, ASUS RT-N18U), connected to 4 pcs via cable and 1 tablet wireless. After I noticed some performance drops in my network speed, I checked the traffic manager. The ...
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ASUS RT-AC66N and PoE

I have an ASUS RT-AC66N router, and I will like to power the router by using PoE. The required power input for the router is 19V DC and 1.58A. But I haven't been able to find a solution where I'm sure ...
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32 views

VRRP IP Mcast - how does intermediate switch handle

I have two routers A and B. Both have VRRP configured for Lan 0, Lan1 and Lan 2. Both routers are connected to a common router. When VRRP IP Multicast packet sent from Lan 0, Lan1 and Lan 2, what does ...
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Remote Desktop Services and Router/Firewall limitations

I'm looking for a solution for using Remote Desktop Services on a Windows Server 2016 bypassing the need of Port Forwarding on Router/Firewall of RDP port to allow connection from the internet. The ...
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37 views

No pinging possible in local subnet

Ahoy friends. Currently i got an OpenWRT device, acting as LAN-WIFI Bridge, connected to another WiFi network, to provide internet connection for my LAN devices. So everything alright. But i want to ...
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45 views

Asus RT-AC88U: prevent IPs ouside of router's DHCP range

I'm using Asus RT-AC88U router (with Merlin firmware) for home network. Recently I added new device to the net - Qnap NAS. After some period of time I realized that my PC uses the qnap as DHCP server -...
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60 views

Passthrough of OpenVPN clients to local network

Ahoy friends. Unfortunately i don't have that much knowledge about OpenVPN but at least i want to try to get my idea working. Currently i'm using a VoIP device connected to my local area network, and ...
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1answer
23 views

How to restrict access on only one website (with virtualhost based configuration in httpd) ? I wont to be accessible only from a specific country

I wont to do it from the webserver, is it possible? Or the best practice is with access list's in the fouter, but then how other sites will be accessible from everywhere? The operating system is "...
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326 views

Cannot connect to Flask server via public IP, only private IP

I have a simple Flask server that echos requests it gets to the terminal. Requests I send it via the device's public IP address do not register. The flask server is started correctly on all ...
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0answers
33 views

Problems routing traffic from client through host w/multiple IP address on same i/f

Need routing configuration advice (preferably with commands): I'm trying to somehow forward Internet requests originating on the client through a host (over 192.168.200.0 network) to an Internet ...
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2answers
291 views

Exposing LAN with Zerotier when using Ubiquiti Edge Router X?

So I managed to install ZeroTier with the Ubiquiti Edge Router X via: admin@edgerouter# sudo -i root@edgerouter:~# curl -s https://install.zerotier.com | sudo bash And got to access the Edge OS (...
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23 views

Force DNS IP to 2 subnets

I'm trying to use iptables to force clients to use OpenDNS DNS server on my 2 subnets. iptables -t nat -I PREROUTING -i br0 -m iprange --src-range 192.168.1.10-192.168.1.69 -p udp --dport 53 -j DNAT -...
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2answers
194 views

VoIP over VPN (FritzBox) – can register, can call, but no sound

We have a small company network here (192.168.178.x) and a private network in home office (192.168.2.x). These networks are both running a FritzBox router and are connected via VPN trough FritzBox to ...
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152 views

Exposing docker images while on VPN

I'm running an ubuntu server with some docker containers and an openvpn client on the host. When openvpn is off, I can access the docker images on the WAN IP, however when I turn on the openvpn, the ...
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3answers
63 views

Whitelisting my home router on corporate servers? [closed]

I need to access my corporate server (which is restricted) from my home. Corporate Admin is asking for Gateway IP of my home network so that they can whitelist my Home network. Basically, All my ...
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1answer
59 views

Connecting to a python socket behind a router

I have a Python script on my server which opens a socket that can be connected to from anywhere. It works on my digitalocean test server that has a public IP as shown by ifconfig. It does not work on ...
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22 views

iptables not working when applied to 2 subnets

This command successfully forces OpenDNS on my subnet 1: iptables -t nat -I PREROUTING -i br0 -m iprange --src-range 192.168.1.10-192.168.1.69 -p udp --dport 53 -j DNAT --to 208.67.222.222 iptables -...

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