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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.

7
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0answers
32k views

Open settings of X network adapter from CMD/BAT

How to open setting of the specific network adapter via commandline in Windows 7 Enterprise? I'm under domain user but also have access to local administator user. Under domain user I have no rights ...
6
votes
0answers
3k views

How to mount a samba share on non-standard port?

The firewall on my network drops all packets on TCP port 139 and 445. So all samba shares don't work outside the LAN. I tried letting the samba daemon listen on a non-standard port. This method works ...
5
votes
0answers
4k views

Raspberry Pi won't bring up wlanX interface - multiple wireless interfaces

Let me jump straight in. I am using a raspberry pi 3 running latest version of raspbian (pixel) as a router/wifi hotspot I have 3 wireless interfaces: built in wifi interface (brcmfmac) TP-Link ...
5
votes
0answers
1k views

Block Windows 10 P2P updates with a corporate firewall

I work for a small IT company that fix mostly Windows computers, and lately we have an huge issue with Windows 10 updates. When a new computer enters our network and starts downloading updates, it ...
5
votes
0answers
112 views

Modified file not being read over network

I have a strange issue with file sharing in Windows Server 2012. We have an application that's run from a network share. There's also a Terminal Services server so remote users can run it. This ...
5
votes
0answers
401 views

Diagnosing iSCSI bottleneck

I just got my hands on a few DL380 G5s, and I thought I would use them in my home lab to test out the creation of a Hyper-V cluster using an iSCSI storage setup. I have installed Server 2012 R2 on all ...
5
votes
0answers
2k views

Make Genymotion use a host VPN

I'm using Cisco's AnyConnect to connect to a VPN using my Windows 8.1 PC. When using the Genymotion emulator, I would like it to use the VPN too. However, although having Internet access from the ...
5
votes
0answers
31k views

An error occurred while Internet Connection Sharing was being enabled

I want to share my lan internet connection over my hosted network. But it's being failed due to An error occurred while Internet Connection Sharing was being enabled... I found this post but all the ...
5
votes
0answers
10k views

Can't use local default gateway with Cisco Anyconnect VPN connection

I'm using Cisco Anyconnect as my VPN client on Windows 7. When I connect to VPN, all my traffic is routed through the remote gateway, but I'd like the traffic to route through the local gateway. I've ...
5
votes
0answers
5k views

How do I configure DD-WRT to forward IPSec traffic to an internal server to support a road warrior configuration?

I use dd-wrt as my home router setup and that's been working fine. Now I wanted to figure out a way to be able to use my iPad to set up a IPSec tunnel to my home network while I'm on the road. PPTP ...
4
votes
0answers
531 views

“reply from unexpected source” when DNS server is running as docker container in the docker host

In a machine with IP 192.168.100.6, I can run a docker container and perform dns without issues from within the container: $ docker run --rm -it xenial-networking bash root@255c2ffc38cb:/# dig ...
4
votes
0answers
526 views

IP forwarding between two interfaces on Windows Server from Linux box

I have two VMs, one Ubuntu Server and one Windows Server 2016. On both machines I have a virtual switch with NAT (Hyper-V vSwitch on Windows) with Docker containers connected to them. On Linux my ...
4
votes
0answers
2k views

What is IPv6 connection sharing and why do I want it?

I can't easily find any good information on what IPv6 connection sharing is, nor how it affects my local network topology. I can only find a bunch of information on how to enable it and how turning it ...
4
votes
0answers
133 views

Handling 2FA URLs behind a Restricted Network

I have an application which uses a Payment Gateway from a local bank (Bank A). The application is behind a restricted network (It wasn't until the Wannacry Ransomware hit). In this case, the network ...
4
votes
0answers
507 views

Unable to ssh into my linux machine behind a router from outside the network

We are about to deploy some of the gateway devices (Raspberrypi) in the field. Although we are trying to make them so robust that we should not be required to remotely access them but as this is one ...
4
votes
0answers
678 views

How does Windows identify the network name via Ethernet?

Recent versions of Windows (7 and newer, i think) seem to be able to identify the network, that they are connected to via Ethernet automatically. The name "tbspace Networks" is the WiFi-SSID of the ...
4
votes
0answers
38 views

One domain, one external IP, two ports, one machine, three servers

I have one raspberry pi, running an Apache2 webserver on port 80, an Ogar (Agario) server running on port 443 and another Ogar server on port 444. The external location that I need to access this ...
4
votes
0answers
165 views

Windows 7 stops sending DNS packets at seemingly random times

Pinging an IP directly (and just about any other direct IP connection) seems to pass through. On the other hand, when pinging a domain, using chrome to enter a website or attempting to use nslookup ...
4
votes
0answers
833 views

VNC from MacOS screen sharing to linux Ubuntu

I’m trying to screen share from a MacBook to a VM running Ubuntu on Parallels on a MacBook Pro on the same network. I can ssh to it fine, but using the same account and IP address in MacOS screen ...
4
votes
0answers
735 views

TX packet and TX byte count zero in ifconfig output

I wonder how is it possible to achieve such configuration that no TX bytes and packets are ever counted? There is substantial amount of traffic on loopback interface though. The server runs RHEL 6 ...
4
votes
0answers
484 views

Forwarding traffic on Linux virtual machine received through GRE tunnel connected over OpenVPN

I'm trying to route traffic destined for the public Internet through an OpenVPN network, where the traffic will exit the VPN through another client on the network (that happens to be a VirtualBox VM). ...
4
votes
0answers
1k views

Why do I need to add a period after hostname in order to get DNS resolution to work?

C:\Users\david>nslookup home-pi3 Server: UnKnown Address: 192.168.1.1 Name: home-pi3 Address: 192.168.1.81 C:\Users\david>ping home-pi3 Ping request could not find host home-pi3. Please check ...
4
votes
0answers
2k views

802.1x with Hyper-V

We are using 802.1x authentication inside the corporate network. When I installed HyperV Virtual Switch on my machine to let the VM into the network, the host lost its network connectivity. I came ...
4
votes
0answers
536 views

Nginx + OpenVPN (proxy) and access.log

I currently have an Nginx server running on 444 and an OpenVPN on 443 with the port-sharing feature. Both applications run well, but the IP written into /var/log/nginx/access.log is, thereby, 127.0.0....
4
votes
0answers
2k views

PS4 Voice Chat workaround

Problem Currently unable to use the voice chat feature for parties on the PS4. Equipment List PS4 Linksys WRT1900ac (stock firmware, current main router) Linksys WRT54GL (DD-WRT firmware, backup ...
4
votes
0answers
5k views

Can't connect to socket listening on 127.0.0.1 but works for 'localhost' in Windows 10

I have a clean install of Windows 10 Pro x64 and I’m trying to run PostgreSQL server on it. It used to work perfectly on Windows 7, but Windows 10 is behaving really weird: If I configure PostgreSQL ...
4
votes
0answers
12k views

Windows cannot open “Network And Sharing Center”

I cannot open "Network And Sharing Center" on my Windows 8.1 computer. When I try to get access to this window/dialog nothing happens. I usually right click on the network icon in the taskbar, and ...
4
votes
0answers
1k views

ssh connection sporadically hangs

Whenever I ssh to elsewhere, the connection is fine for 1-10 minutes, then hangs: no error messages, just stops accepting input. I can exit (CR-~-.) but that's it. I can't find anything suspicious ...
4
votes
0answers
545 views

ssh port-forwarding and remote bind failure: ExitOnForwardFailure not working?

I have two FreeBSD 9 hosts and I want to maintain a tunnel to reach firewalled host R from a high port on cloud host C. ssh -y -i tunnel_id_rsa -o ConnectTimeout=60 -o ServerAliveInterval=20 -o ...
4
votes
0answers
533 views

Pidgin auto-reconnect

Using Pidgin 2.10.6 (libpurple 2.10.6) 4cfe697ea3ae39a4fb3dad8e3ed1c70855901095 On Ubuntu 12.10 (yes I know this is out of support) From time to time Pidgin will disconnect from a network. This ...
4
votes
0answers
907 views

VirtualBox Port Forward not working when Guest IP *IS* specified (while doc says opposite)

Trying to port forward from host (Mac OS X) 127.0.0.1:8282 -> guest (CentOS)'s 10.10.10.10:8080. Existing port forwards include 127.0.0.1:8181 and 9191 to guest without any IP specified (so whatever ...
4
votes
0answers
3k views

NT_STATUS_IO_TIMEOUT error while sending a file to Samba server

Today I installed OpenELEC which came with Samba server by default. When I try to send a file using smbclient on linux I get it sending for a moment, but then it stops and I get error cli_push ...
4
votes
0answers
3k views

eth0 not appearing. Tried everything that seemed to work for other people

Firstly, let me say I am completely new to Linux so if you're going to tell me to check something or do something, please give me a vague idea how. Installed Ubuntu Server (newest download I could) ...
4
votes
0answers
1k views

Is it possible to replace Forticlient with the native Mac OSX networking tools to connect to a VPN?

Because I don't like FortiClient software, it installs a daemon running all times, and I just really want to run the app when I do need to connect to the VPN (once a month), not really have it use ...
4
votes
0answers
590 views

Forward IPsec tunnel from IPv4 endpoint to IPv6 endpoint

I have a new ISP and only have a Dual Stack - lite connection now. That means I can't access my router via IPv4 anymore, since the external IPv4 address is private. I have native IPv6 connectivity. ...
4
votes
0answers
2k views

How do I make VirtualBox's vboxnet interface show up in the OS X network configuration GUI?

I'm willing to do any amount of frobbing of settings in .plist and .xml files to make this work. The scenario is this: I have a nice Android based phone. The phone can do USB tethering. OS X 10.6 ...
4
votes
0answers
2k views

How to copy connections to other locations in Mac Network Preferences

The Problem: I want to be able to use selected connections in different Location(by Location I mean Location combo in Mac Network Preferences). I want to be able to find a connection in Network ...
3
votes
0answers
294 views

Internet connection drops every 10 minutes (exactly)

Since I've moved to a new apartment a few months ago and changed my I ISP (the one shared with other apartments in building - same router) I experience internet drops (ethernet) every ten minutes, ...
3
votes
0answers
152 views

Netplan overwrite previous config?

I have a couple netplan config files, one that configures the machine statically # /etc/netplan/02-static-config.yaml network: ethernets: enp0s3: addresses: - {...
3
votes
0answers
254 views

Docker container can't make DNS queries with FirewallD running

While FirewallD is running, all DNS queries fail and are blocked by the firewall. Running tcpdump -i docker0 while running ping google.com in a container shows me 21:27:02.683342 IP 172.17.0.2.35118 &...
3
votes
0answers
238 views

OpenWrt with multiple radios

I have three Compex boards running OpenWrt. I have connected two Qualcomm radios to each of the boards. I am trying to configure one of these boards as an access point (AP mode), and other two in ...
3
votes
0answers
36 views

How can I set up shortlink domain resolution on my home router or within an OS or browser?

I work at a large multinational internet firm and internally we have shortlinks that resolve unqualified or partially-qualified domain names into the full domain name as well as allow custom ...
3
votes
0answers
303 views

ipconfig /release (AUTO RENEW???)

I have a (very very) remote machine running over teamviewer, I (mistakenly) ran ipconfig /release The machine is set never to sleep or restart and no items are set to power saving mode. The only ...
3
votes
0answers
138 views

MITM redirecting to my own NTP server, blocking traffic to Apple NTP pool

CONFIGURATIONS ipv4.forwarding 1 (ON) arp_cache_poisoning between VICTIM & D.G.. (192.168.1.100 & 192.168.1.1) **LAN** VICTIM: 192.168.1.100 ATTACKER: ...
3
votes
0answers
397 views

No internet connection with bridge adapter

I had internet connection inside my virtual box but after not using it for over a week I am not having internet connection. (Similar question to the question posted on ask ubuntu) The things that ...
3
votes
0answers
48 views

In Windows 8, can you disable the new network connections sidebar and restore the classic connection dialog?

Windows 8 introduced a sidebar for connecting to network connections such as VPNs, as shown in the screenshot below. Is it possible to get rid of this sidebar and restore the normal Windows 7 style ...
3
votes
0answers
482 views

TP-Link powerline adapter causing extreme latency on primary network? Wired devices on Fios router, not connected to powerline adapter, are affected

To preface, I am not a networking guy but work in IT. I'm going to bullet point the situation so it's easier to digest. Here is a little diagram I created in paint to give a visual aid. I pay for ...
3
votes
0answers
57 views

How do I use iptables to forward all dns requets from a specific MAC address to a IP address?

I'm not an experienced iptables user and am trying to figure out if there's a way to forward all dns requests for a specific device on my network to an external or internal webserver? Appreciate any ...
3
votes
0answers
141 views

How do I control the order in which NetworkManager brings up connections?

I have a server running Fedora 28. I've created six connections using nmcli. I would like for these connections to be brought up in a certain order each time the system boots. How do I do this? When ...
3
votes
0answers
28 views

Inherit environment between ssh sessions

I find myself modifying my current environment variables whilst changing between nodes quite frequently. Given this situation, I have been looking for a way of inheriting my temporary bash environment ...