Questions tagged [ethernet]
Ethernet is the most common set of standards for wired connections in local area networks.
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Can I use a switch or another router with JioFiber Router(India) [closed]
I am living with my parents and I am shifting to another floor and I want to use the same WiFi but the router is on the ground floor and I was thinking of using a switch like the one from TP-link so ...
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A gateway of 0.0.0.0 gets added in my linux machine after I assign a static IP and static gateway
I am assigning static IP address on a Linux module (custom Yocto Distribution on TI AM3359 custom hardware) using the ifconfig command.
sudo ifconfig eth1 10.11.3.80 netmask 255.255.248.0
sudo route ...
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nftables masquerading is not working
I've a laptop (172.16.0.2) and a desktop PC (172.16.0.1). The phone is connected to the PC in USB modem mode, and it appears as the enp5s0f3u1 interface. I've set up masquerading through nftables so ...
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USRP N210 on a vmware debian machine, connecting via an ethenet to USB adapter
For a professional project, I must fully automate a process which involves a GNURadio python flow played on an USRP N210. In order to acess the USRP, I installed a VMWare Debian machine on a Windows ...
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SSH Ethernet Forwarding Does Not Seem to be Working
I have Ubuntu 22.04 on both the client and server. I have set PermitTunnel yes in sshd_config in both the client (I might not need it on the client) and the server. I have also set Tunnel yes and ...
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Cat6e Lan Ethernet Cable - Disconnect when shake in Gigabit Mode. But it is stable when shake in Megabit mode [closed]
I have some problem in network connection. When I shake the lan cable at the wall jack, the connect will disconnect sometimes if the network is running in 1Gbps. But when it ran in 100mpbs, there is ...
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Splitter switch with multiple network
With an increase in informatics insecurity in companies, I try to increase the security of my network, but I encountered a problem trying to set up my ideas. Right now, each person in my company is on ...
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Questions on 40GBe QSFP+ to 4X 10GBe SFP+ breakout cables
I run a small(~400cores) Linux cluster.
I am using aggregated 10GBe ethernet ports(with Netgear XS728T), but now considering an upgrade to 100GB ethernet with QSFP28 ports(Mellanox SN2100).
As I don't ...
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How many RJ45 outlets is too many?
This is going to be a silly question.
Good friends of mine are opening an ophthalmologist office, and have asked me to provide input on their plans for the IT network. I'm a cybersecurity expert, not ...
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LWIP TCP SERVER Hangs
I'm using LWIP v2.1.3 with TI F28388D Controller. I'm using LWIP as TCP server only mostly in ping-pong mechanism like :
Client
Server
PSH-->
<-- ACK
<-- PSH
ACK-->
A windows client(...
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Ping with jumbo frames fail but returns default ping fail message
I need to set up a local connection between my Windows 11 PC and an external device (IP 10.0.0.10), with jumbo frames enabled (MTU 9000). The end goal on my PC is to connect to the remote device from ...
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What is causing large TCP messages to have low throughput in one direction when using ethernet-to-wifi bridge?
I have two computers, Orin and NUC, which are connected via ethernet cable directly.
NUC is connected to a router with internet via WiFi (for completeness, not relevant to problem, I hope), and is ...
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iproute2 and netplan configuration
I want to use 2 network interfaces, each one has its own default gateway, at the same time. I found on google that iproute2 program could solve my problem but I also have to config netplan in order to ...
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On Linux, how to send packets with local destination NOT through the loopback interface
I have a Linux server with two ethernet interfaces which are connected to the same switch and are in the same subnetwork. The topology is as following
+--------------------+
| |
| ...
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Can you connect two PC ports with different subnets to one unmanaged switch?
We're in the process of designing a machine with a Windows PC inside its electrical cabinet (a Beckhoff IPC like this one). Among other things, there will be some GigEVision cameras connected to that ...
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Two IP addresses on different networks - Netplan
I have a server with only one network card (enp2s0) and I would like to have two IP addresses on two different networks. However, I would like to have one static IP and one using DHCP.
The first ...
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Piping data from ethernet to serial and back to ethernet doesn't reach destination
CONCEPT VISUALIZED
I'm trying to establish a bidirectional communication where ethernet UDP packets enter a linux system (suppose a Raspberry pi) from eth0 interface and piped into the UART hardware ...
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how to configure a network interface on ubuntu server 22.04 lts?
I would like to configure the ethernet network interface of a server but I am completely lost. I saw on the internet that you could do it with the nmcli tool but also with netplan, I saw some people ...
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Ethernet connection disables WIFI
Our company makes a 3d printer built around a Jetson Nano. The printer connects to the internet using a wifi dongle, but for the initial setup the user must connect to the printer using an ethernet ...
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Connecting iPad Pro to the internet via Ethernet
Okay, so you would think my client wanting to get an iPad online via ethernet would be simple and straight-forward way for me to earn $20. When I arrived, this is the setup I found:
The iPad Pro (...
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How to keep IP address when ethernet cable unplugged linux?
My board has wlan0, ppp0 and eth0 interfaces and I always want to keep my IP address on eth1. How can I do this?
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How to ping backup interface?
this is my network configuration:
bond interface 192.168.101.50/24 has two salaves: eth1 (192.168.101.1) that is connected to 192.168.101.2 and eth2 (192.168.101.10) that is connected to 192.168.101....
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Is it possible to connect two AUI transceivers?
I have a system which has a proprietary internal network and provides an external AUI. I cannot find a switch or hub with AUI port. Are whose hubs/switches with AUI port still around?
In general a MAU ...
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Unable to ping other devices in the network through ethernet port on a custom board
I am on a embedded development platform and trying to bring up the ethernet and do a ping test.
As of now, I have the ethernet up after the linux boot, but I am unable to ping other systems. My ...
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Is there a registry value to force a connection to close?
I have an ethernet connection that I want to close if it's not sending or receiving any data. Is there a registry value I can set or any configurations I can change?
For windows 10, thanks
Edit: ...
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Will devices with different auto negotiation settings on switch ports with matching auto negotiation settings communication issues between them?
I ran across this idea today and had conflicting opinions on this from various co-workers.
I am trying to understand if the communicating devices' auto negotiation settings need to match each other ...
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Simple way to secure a wired link with 802.1x in "peer to peer" mode without server
I have an Ethernet link between two Linux hosts with a static IP config using systemd-networkd on the both sides without router, DHCP server, etc.
Is there a simple way to add a basic 802.1x security ...
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Access mysql from another computer connected with crossover cable
I have two computers, and i am trying to access mysql via network on port 3322 (mysql listens on this port)
Computer A Server:
Windows 10 home
Added firewall exception to port 3322 (mysql installed ...
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Can't connect ssh via wireless interface but t works using eth0
Suddenly I can't connect via ssh to a server using my wireless interface but I can do it using the eth0 interface with a cable connected directly to my router.
From my wireless interface I got:
$ ssh -...
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Can ping OPC UA server, but cannot connect to it
I have an OPC UA server running on a PLC from BR Automation and would like to connect to it from UaExpert running on a Windows 10 machine.
It has worked previously, but after physical re-placement of ...
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Accessing Marvell switch via remote management interface
I have 88E6341 Marvell Ethernet switch.
I cannot access its MDIO and according to the datasheet the switch has remote management via Ethernet which I'm interested to use to diagnose connectivity ...
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How to simulate what happens inside the packet buffer of a simple switch?
I'm debugging a case of UDP packets lost in a store-and-forward gigabit switch and I wanted to visualize what happens inside the switch to better understand the gist of the problem.
The scenario is ...
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Event driven way to detect Ethernet port status changes (disconnected / 10mb / 100mb / etc) in linux?
I was wondering if linux has some sort of interface to detect ethernet port state changes via /sys or some other way that is event driven.
What I mean by state changes is DISCONNECTED / 10mbit / ...
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Filtering traffic between ports on an ethernet switch
I would like to know if there is a standard way of limiting traffic between ports on a managed Ethernet switch? I have a 7-port Ethernet switch (microchip - KSZ9897), which is a layer 2 switch, but ...
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Limiting hosts on a network
I am in need of some networking advice and hopefully some of you will be able to help me.
My network is shown in this block diagram:
The ethernet switches are from Microchip, model KSZ9897, which is ...
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What Ethernet twisted pair cable is best with a particular Ethernet switch
tl;dr I want the appropriate Ethernet cable for my Ethernet switch. How do I correlate Ethernet cabling speeds measured in hertz with an Ethernet switch "speed" measured in bits-per-second ...
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Onboard ethernet versus Intel NIC
I would need some recommendation about the benefits of using a dedicated Intel Ethernet card versus simply using the integrated Ethernet of the motherboard.
The typical use case would be the following:...
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Network layer communication with multiple hosts with the same IP but different MAC addresses
Due to an unfortunate (mis-)configuration issue I am having ~100 hosts of which the IPv6/IPv4 (even the IPv6 link-local) addresses are all the same and which for the moment I cannot change. However, ...
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Gateway with multiple VLAN IPs on one NIC
I would like to separate several hosts from the local network and put them behind a firewall. I would like to use VLANs to "physically" separate them instead of using just different subnets. ...
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Mac can be arpinged but not pinged
Why does Mac OS X and Linux do not ping each other on a local Ethernet Network?
Edit 2012-12-14 (ten days latter) adapter FireWire to Ethernet RJ45 might be the problem (on MacBook Pro Retina early ...
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What can cause network packets consisting of PUU?
We have a system which is suffering from comms outages on a gigabit ethernet network. The traffic load on the network is such as to slightly stress a 100Mb network, but there are gigabit switches and ...
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Raspberry Pi as internet forwarder [closed]
I thought about building a device that will behave as a forwarder with VPN. I know that I can e.g. take the internet cable, connect it to rpi, turn on vpn and create wifi hotspot. But I wanted it to ...
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Converting phone wall mount to ethernet mount [closed]
I currently have a telephone wall mount. 1 near the router, 2 more in another 2 rooms.
When I remove the wall mount, I can see 4 wires from the cable.
Red, Blue, White and Grey.
My question is, can ...
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Is there a way to configure port security on Linux bridge?
On switches there is such a feature as Port Security. Roughly speaking it allows to control, which exactly MAC's can be on the specific switch port. You can restrict it to just one MAC or several, and ...
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Can tone ethernet cable into patch panel but it's not working
So we recently had to two major issues happen at a location.
We had a lightning strike hit the building
We updated switches after this lightning strike
Now one thing that was 'hit' was a SOHO router....
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No responses to ARP requests
One of my server's physical interfaces eno3 is part of a bridge br0. There is also one LXD machine attached to this bridge (nictype=bridged, parent=br0).
Sometimes ARP stops functioning completely.
If ...
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Security issues with configuring default IP address(0.0.0.0) to ethernet interface
In our linux embedded application we would like to keep available ports up and running and assigning with 0.0.0.0 IP address. In short we will be executing all ports with ifconfig ethX 0.0.0.0, and ...
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SQL server connection TCP/IP overt Ethernet [closed]
I have two PCs. There is SQL Express installed on one of them. TCP/IP settins are here:
tcp/ip settings
tcp/ip settings
When I perform Test-NetConnection on local computer I get
But when I do it ...
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How to manually setup Whonix networks for QEMU?
I would like to run Whonix directly using QEMU instead of using libvirt and I want to manually setup internal and external network. Using libvirt I would need to run those commands:
virsh net-define ...
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Is there exist in a market some usb->ethernet->wifi combo dongle?
I have a USB-ended device which I want to connect to Enterprise Wireless network (EAP/TLS via FreeRadius). Is there any device in a market which can act as a WiFi client with EAP/TLS possibility?
Now ...
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