Questions tagged [ethernet]

Ethernet is the most common set of standards for wired connections in local area networks.

Ethernet is the most common set of standards for wired connections in local area networks.

Originally designed in the 1970s, Ethernet had a data rate of 10 megabits per second. Later, Ethernet was extended to support rates of 100 megabits/second, 1 gigabit/second, 10 gigabits/second and 100 gigabits/second.

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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 Ethernet frames from some new device will be…
NK-cell
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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 setting all IP address to virtual interfaces…
Gilson PJ
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SQL server connection TCP/IP overt Ethernet

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 from remote PC I get As you can see tcp succeeds…
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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 this device connected to the network via…
A. Petrov
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Qlogic QLE8152 connect to a DS14 disk shelf

I am trying to configure a NETAPP DS14 disk shelf to expose the drives to a windows or a linux machine, I don't have a controller but I got a FC to ethernet adapter (Qlogic 8152) however the loop does not connect, I see that the DS14 supports max of…
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Ethernet/UIB device is accessible on one system but not the other (Linux)

A Universal Interface Board connects to the computer via Ethernet. On a correctly configured system (A), arp -a lists its MAC address and establishes a connection. The connection appears to happen through/dev/ttyACM0 arp -a ... (10.0.0.100) at…
Cheetaiean
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Windows 10 multiple Ethernet connections with one being connected to the internet but PC doesnt connect to the internet

I have a win10 machine in a rural area with no ability to connect to a private network. The computer is used to track measurements of specific sensors which are connected with ethernet to the computer. I want it to upload data to my cloud using a…
V.Hunon
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A simple configuration: LAN + direct connect simultaneously

This should be an easy configuration, but I'm struggling to Google for it; the vocabulary eludes me. I've got a desktop with onboard gigabit which finds its way to the internet via the router. Naturally. I've got a server with onboard gigabit which…
pdm
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Is it possible to update HP/Intel NIC firmware?

Is it possible / how to update the firmware (EEPROM image) of Intel Gigabit ethernet cards? I have multiple HP NC365T NICs based on the Intel Corporation 82580 Gigabit Network Connection. Some of them have different firmware versions: ethtool -i…
AirPett
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Abnormal port request on Linux system

I am using Debian Buster and Android 9. Checking the network activities I noticed that it scans many ports. How can I determine who is the cause or if this is normal? I connect the mobile phone to the PC in hotspot. sudo iptraf-ng output: Thu Mar…
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Ethernet bond interface fails after NIC replacement

I've replaced a failing 10GbE adapter in a Dell PowerEdge server running a bonded pair of Cat6 cables to an aggregate switch. The old NIC and its replacement are both Intel Ethernet Controllers (10-Gigabit X540-AT2) so I assumed (probably…
Beady Eye T
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LAN cable-tester's LEDs fire at 3 and 6 (without passive side attached)

I have hardware question. I am running a duplex CAT7 cable from a patch panel to a wall socket. One connection works, the other struggles when I test the cable. Below I describe how I tested the cable and what the able tester shows. Maybe someone…
1cedsoda
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stp - avoid links with packet loss

We have a set of devices connected in a ring, that are using stp (using https://github.com/mstpd/mstpd at the moment) to avoid issues with the loop. What we have seen, is that while stp can adapt the network when a link is fully broken, it ignores a…
eglasius
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Ethernet frames duplication when using VLAN interfaces

I have three processes on linux machine: First is using socket, which is bound to all network interfaces. The second is sending ethercat packets by using broadcast (ethercat doesn't use IP layer). The third is sending ethercat packets by using…
MBI
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Debian Web server with dual ethernet

Diagram Hi all, I have a web server (debian 9) and 2 internet line, I want to public website on both lines to do HA, I already configured nat on both FW. Tested for each line alone is ok but I can't connect to both line at same time. That mean if…