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.

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GIM69207S SMP/E download fails with java.net.UnknownHostException:

I'm in the process of downloading software to install on my z/OS system. I've not used SMP/E Receive to download previously. The DOWNLOAD step ends with a return code 12: ...
Hogstrom's user avatar
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Network Bridge shows Unidentified network on second PC

I have a Laptop and a desktop PC. Laptop has a WIFI connection , I want to connect Laptop to Desktop for internet connection as dekstop doesnt have WiFi card. On my laptop I have Windows 8.1 and on PC ...
mark's user avatar
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2 answers
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Can ssh via tunnel from root, can't from user account

I have two users on desktop - root and user. I have a bastion and a protected host. When run ssh protected as root on desktop, I connect fine. When I run ssh protected as user on desktop, I get no ...
Iiridayn's user avatar
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Change network printer name in Windows 10

In our company we have a network printer which has an ethernet connection and a web based interface for configuration. If I have installed drivers for this printer on two computers, A and B, and on ...
silentheaven's user avatar
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how to get all macvlan subinterfaces' MAC

Is it possible to get all MAC/IPs for macvlan interface? I have macvlan interface: [root@srv ~]# ip a .................. 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc ...
Dmitry Perfilyev's user avatar
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1 answer
3k views

How to find owner of a device using Hostname and MAC address

I regularly monitor my network for unknown devices and today found an Apple device with a MAC address and a Hostname. I would like to know specifically, who the owner of this device is. Is there a ...
GSchira's user avatar
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546 views

Container port/service accessible from all host IP's with docker custom bridge linked to IPv4 alias on Synology NAS

Good day all. I Have a question regarding Docker on a Synology NAS (Linux). I have a Ubiquity Unifi Controller container running on this NAS. (jacobalberti/unifi) This image needs specific ports to ...
Lars Beugelaar's user avatar
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1k views

Unable to add wlan1 interface

I am trying to make a WiFi router from NanoPi M1+ device. It will have two working modes that is Eth<-->WiFi and WiFi<-->WiFi. I am able to execute the first mode perfectly, but the second mode ...
ron123456's user avatar
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Ubuntu 18.04 SSH VPS continually disconnecting

I have a Virpus VPS that is running Ubuntu 18.04. Since I got it a couple weeks ago, I have been having trouble staying connected via SSH. I am able to connect just fine, but it will seemingly ...
MattR's user avatar
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No Internet on Ubuntu 18.04 - No Ping or curl to router / dns but can SSH

I changed my router last night and computers are fine and wireless fine etc. My development web server seemed fine I can access it any my websites and SSH etc however I noticed that I have no internet ...
harri's user avatar
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Slow file transfers between home server and PC over ethernet

I have an HP Proliant DL385 G5p server which I use to host a personal Debian 9 fileserver via a VM on a hypervisor. This VM has its own 1Gb/s ethernet connection to a switch of the same speed, which ...
James Stone's user avatar
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1 answer
86 views

How to protect home LAN when using OpenVPN to connect to remote LAN?

I have a home network (a router, PCs, phones, smart devices, etc.). I'd like to connect from this home LAN to a remote LAN at my work via OpenVPN (which is what our IT provides there). The remote LAN ...
chase's user avatar
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Give access to CloudFlare IPs in iptables

I trying to DROP all requests except CloudFlare requests, and give SSH access to a certain ip. so I write this rules : iptables -P INPUT DROP iptables -P OUTPUT ACCEPT iptables -P FORWARD DROP ...
MajAfy's user avatar
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Headless Raspberry Pi 3 installation, attempting to use VNC, Putty, or boot with laptop with BIOS mode

I need a little help here. I own a Raspberry Pi 3 Model B+. My OS is Windows 10 on a Lenovo T430 laptop. I have a problem: I need to boot my PI headless. What I have is: a laptop Ethernet cable ...
Near's user avatar
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Tuning local Remote Desktop parameters

I am using Remote Desktop Protocol on Windows 10 in my local LAN. It works quite well but it feels not snappy in two situations: Scrolling Typing These affect my brain heavily on browsers and text ...
The Wavelength's user avatar
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1 answer
757 views

Disabling client isolation for softAP (wireless hosted network) in Windows

Due to a particular reason, not important here, I need to share VPN connection via WiFi to multiple embedded devices. One way is specialized wireless router, expensive and clumsy. The other, quite ...
xmp125a's user avatar
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Connecting Libvirt VM's (Domain XML config) to OpenVSwitch

I'm trying to learn OVS and KVM, and generally make sense of basic bridge networking in the virtual world (i.e. between OVS, the VM Host and KVM/Libvirt guests). I'm using ClearLinux (systemd based) ...
Chris's user avatar
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IP address / port is reacheable by one process but not by another

We have a strange networking problem like this: There is machine A with multiple network interfaces, one of them is 10.10.45.45/16. Connected is a Server S with ip:10.10.45.47 streaming data on port ...
stot's user avatar
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Two parallel OpenVPN tunnels site-to-site: can't access all interfaces

The setup I have the following topology: Router 172.25.214.1 | | | SiteB 172.25.214.0/24 ...
arcus_mannen's user avatar
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3k views

What's up with "Destination host unreachable" from my own IP?

The internet died at the office today. Figured I'd start a ping to see when things started working again. ping 1.1.1.1 /t For the most part I'm getting Request timed out. But then for a short ...
Svish's user avatar
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Backup to a network drive and make only the backup program able to write to that shared folder?

I would like to backup to a network drive. However I don't want viruses, trojans, etc. on my PC to be able to delete data on that network drive. So is there a way to enable write access to that ...
Mikey's user avatar
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Cannot set speed of USB adapter

SO, I have a USB 3 to Gigabit Ethernet adapter, When I try to change speed and duplex of this interface ethtool -s eth1 speed 1000 duplex full autoneg on I get: Cannot get current device settings:...
Ramzah Rehman's user avatar
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1 answer
188 views

Connect two networks via an iMac?

Ohai guys. I have a question regarding a setup and as a fresh trainee, I am having problems since there is barely any information on the internet let alone a similar case. The current setup: 2 ...
Mark Bacon's user avatar
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220 views

Use local WiFi directly even when PC is connected to OpenVPN Server

This is the following setup I currently have on a Windows 10 Pro Machine 2 Ethernet Cards One Ethernet Card connected to my main router Install OpenVPN Client with its virtual TAP adapter and start a ...
haunteddevil619's user avatar
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1 answer
49 views

Shared VPN on home server

I am looking into getting a VPN service, something like NORDvpn or similar but I want to run the app on my Mac server and route all my internet traffic from my MacBookPro's, Sky Q box, iPhone's etc ...
Adam Mann Pro's user avatar
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775 views

Can I restrict which processes have network access?

So, Sometimes I connect my PC to a mobile hotspot when the WiFi is down, because it happens often. And whenever I do, all these weird processes chew through my mobile data incredibly fast. Is there a ...
Rockstar5645's user avatar
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1 answer
2k views

Cascading two routers into the same subnet

There are two routers opeating in my house, the first is ASUS RT-87U, which is the primary router, and the second is D-Link DIR model, which is the secondary router. It is connected to the primary ...
Obadah Muhammad's user avatar
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0 answers
400 views

How can I monitor/record network stability in the background?

I work in a building where the network connection regularly has issues, but the people responsible for the LAN refuse to acknowledge there is a problem, "because nobody else has complained, so it must ...
Asfand Qazi's user avatar
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1 answer
1k views

LINUX Routing VPN traffic for specific port to host on local network

I am connecting my Linux L1 to VPN to get a public static IP 117.xxx.xxx.xxx . This L1 machine has only one ethernet interface eth0 with ip 192.168.1.130 and VPN is connected creating interface ppp0. ...
Dapinder's user avatar
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0 answers
47 views

Expanding network to outbuilding

I'm not the most tech savvy so would appreciate some help I have connected a router to a cable wireless modem which works fine. I have from the wireless cable modem ethernet port run a cable down to ...
Andy's user avatar
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4k views

MikroTik hEX router – how to limit bandwidth on Ethernet

I have a MikroTik hEX router running RouterOS 6.4. eth1 is my WAN port. eth2 is connected to a TP-Link Wi-Fi router. All the devices on this Wi-Fi network have addresses in the range 192.168.42.100 ...
JP Dippenaar's user avatar
1 vote
1 answer
73 views

Iptables rules depending on network connected to

I've struggling around something I would like to put in place. I use my ubuntu 18.04 laptop at work and at home. I would like my iptables to drop all incoming connections (except established ones of ...
Nisalon's user avatar
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0 answers
590 views

Setting up CUPS server on port 80

Would it be advisable to use port 80 instead of the default CUPS port 631 or the alternative port 49631 as adviced by Debian SystemPrinting. I could bind it to another virtual interface with a ...
kleo's user avatar
  • 179
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0 answers
1k views

OpenWrt AP in client mode has really slow download

I have OpenWrt installed on a TP-Link WA801ND access point running in client mode connected to another (corporate wifi) network. I believe the connection to the corporate network is strong. See ...
Dave's user avatar
  • 143
1 vote
0 answers
591 views

Which IP as dns server for vmware nat config?

Unfortunately I don't seem to understand how NAT on vmware works, so I'll start by describing my setup: Vmware guest with a linux system, ie fedora. It has a static ip configured from the NAT ip ...
Stefan's user avatar
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0 answers
2k views

How to config default gateway for Windows 10 OpenVPN client?

I set up my OpenVPN server and make client script like this: client proto udp remote my.server.ip.addr port dev tun resolv-retry infinite nobind persist-key persist-tun remote-cert-tls server verify-...
Varg Nord's user avatar
  • 101
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0 answers
153 views

Possible to forward Ethernet to WiFi network using a WiFi router

I have a router that I want to use to take Ethernet input and output a WiFi network, to make a kind of virtual network so that computers on the virtual network cannot access the computers on the main ...
Menotdan's user avatar
1 vote
0 answers
1k views

Network Emulator Toolkit (NEWT) ICMP failing Windows 10

I am trying to use Microsoft's Network Emulator Toolkit to simulate poor network conditions, but it is failing to allow ICMP packets to pass through on Windows 10. I have tried disabling the firewall,...
MrTod's user avatar
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0 answers
397 views

SSH Unreachable after large SCP transfer

Recently built a new i9 server; it is running ubuntu 14. This has happened 4 times in the last 2 months, and today it may have caused a loss of a day's worth of experimental data. Here is what ...
FrankObr's user avatar
1 vote
1 answer
88 views

I want to make a download of a forum

I moderate, before it closes for good. There's some useful info on it I want to save for myself and I don't want to export the data to another webserver, I just want the pages. Mind you, I'm a user at ...
Tuan nguyen's user avatar
1 vote
1 answer
66 views

Laptop's wifi goes out when my pc is connected to internet

I don't know if this is the right place to ask, but my laptop's wifi gets disconnected from the internet when my PC is connected to the internet (wired). I tried to diagnose on the network adapter (on ...
user6069863's user avatar
1 vote
0 answers
414 views

How can I connect my 2017 Macbook Pro to Apple Airport Extreme via ethernet?

I want to maximize my upload/download speeds by using ethernet in my Apple Airport Extreme. I purchased a ethernet cable and an ethernet -> usb-c. I plugged it into the Airport Extreme but I can't ...
O.rka's user avatar
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1 vote
1 answer
2k views

Can't access the default gateway page on my Sagemcom F@ST 3686 modem

I have my computer computer plugged to a Sagemcom F@ST 3686 v2 tlc, via Ethernet. I'm able to access Internet, and ipconfig tells me that the default gateway is 192.168.0.1, but I can't seem to enter ...
Federico's user avatar
1 vote
0 answers
392 views

UPS configuraton -- master/slave

I recently bought a Eaton 5PX1500RTN UPS(1440VA/1440W) with a Network-MS card. I connected it via ethernet and can now see the Web UI for Eaton. This thread here gave me confidence that the UPS would ...
Inxsible's user avatar
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1 vote
1 answer
535 views

netsh reset caused net to fail with VPN

So I ran the these lines to fix making a hotspot (would not assign IP address). netsh winsock reset catalog netsh int ipv4 reset reset.log After this, the net works fine. But when I connect with my ...
Firifire's user avatar
1 vote
1 answer
2k views

How to access my public IP from LAN

I'm currently using a Netgear router with DD-WRT firmware. I have a laptop with a camera application installed. The application uses public address and ports to operate the cameras. When I'm at work, ...
REGE's user avatar
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1 vote
1 answer
53 views

Intermittent 403 errors for all users on local network after storm

After returning from a cross-country drive, during which no one was in the office nor was anyone accessing the computers and devices on the office network, we are experiencing intermittent HTTP-403 ...
Eriks's user avatar
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1 vote
0 answers
2k views

Unbound DNS for lan network

I have problem with setting up dns server using unbound. Unbound is set up on freeBSD ('dns.home.local' - 192.168.0.228) and it works, resolving local names (both 'gate' or 'gate.home.local') and ...
unknownkoreancoder's user avatar
1 vote
0 answers
3k views

SSH port forwarding on MacOS X

I know there are quite a few tutorials about this, but I can not get it to work on my machine. So I have a MySQL database running on: Server: dbhost.net Name: mydbuser PW: mydbuserpwd Port: 3306 ...
Torben's user avatar
  • 111
1 vote
0 answers
472 views

How to setup iproute2 to share Internet connection from one interface (eth1) to another (eth0)?

How can I give Internet access for Workstation ? I already did on RPi: echo "1" > /proc/sys/net/ipv4/ip_forward ip route add default via 192.168.8.1 iptables -t nat -A POSTROUTING -o eth1 -j ...
Paul Serikov's user avatar

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