Questions tagged [networking]
For questions on connecting devices together so that they can communicate with each other, as well as questions on networking equipment such as routers and switches.
34,575
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How to ping a LAN behind a VPN router client from another VPN client?
I am trying to access my LAN devices over a WireGuard VPS setup. I have 2 WireGuard peers connected to a WireGuard server having a public IP on AWS EC2 running Ubuntu. I am new to WireGuard and also a ...
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Can't connect to remote server via ssh
A month ago I could connect to a remote server via ssh, but for a week, I can't. At the moment I have access to the server locally and when I try to connect to localhost, to test if it works, I can ...
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How to configure a PC running pfsense to act as firewall for all network traffic
I am trying to set up PFsense in my network as a firewall between my modem (ATT modem and my WiFi 6 router). The setup I'm using is a PC with Ubuntu and VMware running PFsense. I have two network ...
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Something is interfering with my WiFi connection on my laptop. Is it the dedicated GPU?
This is my second time trying to narrow down the issue.
I live in rental place (house bottom floor) my landlord lives above me and has the WiFi router up there.
Laptop specs:
It's a gaming laptop ...
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HyperV internal network detected as Unidentified network and keeps resetting to public after reboot
I use a HyperV internal network in order to allow file sharing access via SMB between my guest and host. This was working fine for several years but I recently upgraded to windows 11 (clean install).
...
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In Windows 10 (22H2), network drives are not reconnecting after re-connecting to the VPN. Error: The local device name is already in use
A user is connecting to a work network using a FortiClient VPN client. When the VPN connection drops, the user re-connects to the VPN, but they are unable to re-connect to the network drives. If ...
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Converting WireGuard from docker to k8s, handshake ok but no internet access
Problem: I have a working WireGuard setup in Docker (see guide: link) but am struggling to achieve internet access for clients when porting the configuration to Kubernetes with host networking. I can ...
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Can I change the traceroute to a certain IP?
I like to play the game League of Legends but lately have gotten unacceptable amounts of latency (400+ ping). After finding out the game server's IP (95.172.65.165) I tried to traceroute it to see if ...
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Serva Windows 8 Install: Network location cannot be reached?
I have a Toshiba z30-a1301 that I am trying to install Windows 8 on. The only way I am able to do it is through LAN boot. (No option for USB, no CD slot, no recovery partition).
I'm using Serva, and ...
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Why is traffic not passing through OPNsense firewall in Hyper V?
I'm configuring OPNsense in Hyper-V. It is connected to the DMZ on one interface, and the internal network on the other, with internal switches for the VMs. There are VLANs setup and working fine.
The ...
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Keep connection alive even if physically not connected for a while? [duplicate]
So here is the scenario I have a laptop that I use with a LAN cable connected to it to my PS2 on which I play OPL games stored on my SMB.
However I also lift that laptop of the table to put on my lap (...
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Implications of incorrectly configured subnet mask / gateway
I have recently done an upgrade on a Cisco 2520. As part of the upgrade and SVI was added to the switch to allow a VLAN to route locally which was previously done at another switch (via a trunk). The ...
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Tunnel of public IPv4 subnet to local server using Bird and WireGuard
With Bird 1.6.8, I successfully announced a IPv4 /24 subnet, and I'm mostly using example IP addresses/subnets according to RFC 5735:
root@tunnel0:~# birdc show proto all vultr
BIRD 1.6.8 ready.
name ...
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How does firewalld "ingress" and "egress" work compared to the 'classic' way of masquerading IPs?
I'm currently on the second iteration of a home router I built myself.
On the 'original' build, I essentially wrapped the 'standard' commands in firewalld rich rules
On V1
firewall-cmd --direct --add-...
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If in a LAN network there is a machine with the wrong mask, what happens to communication to and from this machine? [duplicate]
Just a theory question I've come across. As the title says, what happens to communication to and from a machine with a wrong netmask?
I suppose it would work in leaving communications but not in ...
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WiFi extender, extending a cellular hotspot
I have a 4G phone which in the corner of my house receives 4G signal, and using speediest.net I get about 20Mbps, if I'm connected directly to my phone from my laptop and sitting next to it.
My ...
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how to access router with IPv6 address?
recently I tried to access my router's setting via 192.168.0.1 (manual said so) as usualy, however, thing is that a year ago I have switched from ipv4 to ipv6 and now ipconfig shows me this:
Windows ...
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How to avoid localhost.example.com resolve to localhost address?
I have a domain, for example, example.com, whose DNS is hosted in http://freedns.afraid.org.
Strangely, when testing web site for vulnerabilities, I've found that when using localhost.example.com, 127....
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How to prevent other people using the specific IP address?
I have a local PC that required a specific fixed IP. But it is frequently that other PC or mobile devices are using that specific IP. I have tried to assign that IP to the PC mac address on my router. ...
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How can I connect to the Netgear GS108E management console?
First, I factory reset then power reset the GS108E.
Then I plugged only my laptop into it. The GS108E was unable to give my laptop an IP address (I presume because it is unmanaged or doesn't have ...
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How do I find the IP address of routers and switches on my network?
I'm attempting to reach the management consoles of three separate devices on my network (a Juniper SRX100, a Unifi Dream Machine Pro, and a Netgear GS108E). The Juniper has taken 192.168.1.1, and I ...
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WAN Passthrough through Managed Switch
Due to physical constraints of my house is setup, I was wondering if the following would be possible/a good idea security wise.
The fiber endpoint from my ISP terminates at their own provided GPON, ...
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Why is 172.16/12 contiguous?
I'm confused.
From RFC 1918:
10.0.0.0 - 10.255.255.255 (10/8 prefix)
172.16.0.0 - 172.31.255.255 (172.16/12 prefix)
192.168.0.0 - 192.168.255.255 (192.168/16 prefix)
The ...
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How to propagate a server's host name on local DNS
I am asking this question because I don't know which network service should do this.
I have a lightweight server on my LAN, and its host name is my_server.
Now I would like every machine on my local ...
CommunityBot
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To allow IPsec NAT-T traffic to pass through, why does the firewall still need to permit ESP when it already allows UDP 4500?
I established an IPsec VPN tunnel between two Juniper SRX routers across NAT, with the NAT being performed by the firewall (a Linux server). When attempting to configure the firewall rules to allow ...
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1
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UFW settings for a VPN on a Rasperry Pi
I have recently set up a headless Rasperry Pi, using Raspberry Pi OS Lite.
I set up Wireguard and some UFW rules.
The outcome that I would like to have:
all network traffic is blocked except for ...
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Sending HTTP request to another localhost only Docker container?
I am building a new microservice which is a Python Flask app that is fronted by gunicorn and can take and respond to HTTP get requests. It's kinda like a local proxy service to an external API. I ...
CommunityBot
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Connection reset by <ip> port 22 for all sites
I have been using Windows 10 PC with OpenSSH to connect to cloud virtual servers. It has been working all these time without problem. Just yesterday I start to have this strange problem.
When I do "...
CommunityBot
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Windows 10 - How to reset the network (firewall) permissions for an app so the OS prompts you upon next access?
Not talking about "how to change my network location".
When you first run an app, there is some kind of prompt that has some boxes.
How is this managed (is it per app path? what if I rename ...
CommunityBot
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Using remote network address using draytek lan to lan vpn
I have a puzzle to solve, probably a trivial one, something is dawning on me somewhere, but not entirely.
but to the point:
I have 2 draytek routers connected to each other using a VPN tunnel (lan-to-...
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How do I solve an IP address conflict caused by a VPN connection?
I have my own home LAN, and run an OPNsense (a fork of pfSense) router to control it. I use the 10.0.0.0/24 subnet.
One of my computers (in reality, a VM running inside Proxmox) connects to a VPN ...
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How do I get my Kali Linux VM to connect to the internet?
I have downloaded Kali Linux on VMware and when it is in either, host only or NAT, it refuses to connect to the internet.
When I do ifconfig it doesn't come up with a IP address however when it is a ...
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Raspberry Pi Keeps old IP and adds new static IP
Here is my /etc/network/interfaces:
source-directory /etc/network/interfaces.d
auto lo
iface lo inet loopback
iface eth0 inet manual
auto wlan0
allow-hotplug wlan0
iface wlan0 inet static
address ...
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Network configuration with 3 Oracle VirtualBox VMs
I have a requirement to create 3 VMs and configure the machines as below :
two machines with their distinct networks
third machine contains above two networks that my client can communicate to both ...
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Tunnel wireguard (or any UDP traffic) inside HTTPS
Wireguard is pretty hot these days, deservedly so. I'm also eager to replace OpenVPN by Wireguard.
However, unlike OpenVPN, Wireguard only supports UDP. I like to use TCP port 443 because this port ...
- 129k
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Connect to a device on another subnet using 3rd device as a proxy
I have a device with a HTTPS web portal that only has an ethernet port. However I am unable to get an ethernet cable to the where the device lives, it is however able to receive WiFi.
I was planing on ...
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How to detect a network device's promiscuous mode in modern Linux?
I'm wondering how to detect promiscuous mode of an interface in modern Linux
("Modern" meaning the lack of netstat).
I'm looking for a solution more user-friendly than checking flag 0x100 in ...
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Does total network traffic being higher than the bit rate of a device's ethernet controller affect the controller?
I am using a Wago 750 ethernet controller on a local network that is at its peak hitting ~38,000,000 bits / second as per Wireshark. The Wago is becoming semi-unresponsive around the time of this ...
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OpenWRT, ipv6 is not connected, I can't ping global ipv6 addresses, ipv4 is working fine though
I need help with my setup which is :
ISP router LAN port => OpenWRT router WAN port.
OpenWRT router LAN ports and WIFI => my home devices
I am running default OpenWRT out of the box ...
CommunityBot
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Communicating with devices on a different subnet
Let me start this off by saying that I am very new to how IP Address / Subnet Addresses work, and networking in general. This stuff is generally mystifying, and I've had a hard time understanding ...
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1
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How to timeout ADB connect <ip>
I'm making automation bash script that will go over range of IP's and try to connect over ADB.
If I try:
adb connect <not android device>
the command will hang for 30 seconds until it say
"...
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PIng becomes unstable and higher than the previous one after my old router got replaced with new one
My ping become unstable as the title says, and I dont know what to do, I changed the dns already to cloudfare, disable the power saving mode, configure the transmit power to highest and enable ...
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In vmworkstation, NAT local and global interface MAC verification
In ARP request, VM vNIC adapter has sender MAC address 00:XX:XX:XX:XX:bb. The IP address of receiver NAT device is 192.168.237.2. The MAC address of NAT from ARP should be 00:XX:XX:XX:12
While ...
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Disconnections during login based on IP or how?
I have issues (it seems many people have) to connect to PlayStation site, since when trying to login usually gives server connection error. It seems is a security feature of that website. As they ...
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How to ping/connect to a KVM on another machine in the same lan?
I have 2 machines in my cluster, say M1 and M2. I have one machine installed with a VM (brought up by virt-install), say VM on M2.
My M2 can ping the IP address of VM. My M1 and M2 can also ping each ...
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Sudden networking problems in Ubuntu 18.04 Server
This morning the networking in my Ubuntu 18.04 Server Edition machine is not working anymore :
marco@pc01:$ sudo lshw -class network
*-network DISABLED
description: Ethernet interface
...
CommunityBot
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Access Synology NAS through domain name
I'm want to access my Synology NAS with domain name.
So I made a new DDNS inside my NAS control panel test.synology.me then I can access my NAS through the Internet with test.synology.me:63924 (I don'...
CommunityBot
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Master socket fault, which wires go where?
Currently I have an OpenReach master socket which has some form of adapter plugged into it which takes a cable to the modem router. Underneath a wire coming in from the house which I assume supplies ...
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Windows 10/11 disable WiFi for Users group
I would like to disable WiFi access for all user accounts on a specific laptop. Is there a way to do it via the OS? I would like administrators to still be able to use WiFi while users can only use ...
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How can I change the MTU of a Cisco Anyconnect VPN?
On my macOS 10.15 I have to use the Cisco AnyConnect Secure Mobility Client 4.8 to connect to the VPN of my university.
The connection is much slower than usual, probably because the MTU of 1300 is ...
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