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.
34,581
questions
0
votes
3
answers
114
views
2nd wifi long way from main one
I have cable internet and WiFi at my house. When I moved in I asked the provider tech what I needed to get WiFi to my workshop about 240 feet away. He said to get direct burial coax cable (I forget ...
- 1
2
votes
1
answer
432
views
sharing internet/vpn with ipfw, can't access google.com over https
I am sharing my internet connection / IKEv2 VPN connection over pf via Murus static NAT. My network architecture is as follows:
internet modem ->
wired router (serving 192.168.1.1/24) ->
Mac ...
- 260
0
votes
1
answer
174
views
How can I tell what is actually terminating an http response?
I've got a web server that's serving up some static files. At times when the server is under heavy load, it sends out partial responses with a 200 HTTP status.
This is a problem for my app. Why?
I ...
- 2,998
0
votes
1
answer
86
views
Can network-based firewalls prevent attack within the network?
In other words, if there's a network firewall running, can that prevent any connections on that network (the way a host-based firewall would), or can it only stop computers on other networks from ...
- 147
0
votes
1
answer
1k
views
GRE Tunnel to localhost
I am trying to use a GRE Tunnel (or TAP) to connect a local Linux network namespace light weight VM to the local HOST machine. It all appears to work except that replies from the host do not make it ...
- 572
14
votes
5
answers
67k
views
Creating a virtual NIC that connects to the same network as physical NIC
How can I create a virtual interface, that connects to the same network as the physical interface? I tried searching around but all I found is loopback. I need the other end of the wire recognizes ...
- 512
0
votes
1
answer
85
views
Unable to view File Shares
I have a Windows 10 and Windows Server 2003 machines that both have file shares. Both are on the same Workgroup and the same user/password exists on both machines (local login, not domain).
Each ...
user182146
0
votes
2
answers
105
views
How to use Ethernet connection to provide Internet to a router?
What I want to achieve is to share an Ethernet-based Internet connection using ONLY a router to some computers and wireless devices.
At the moment, I have a RJ45 cable that provides me Internet (it's ...
0
votes
1
answer
6k
views
Restore server network after "ip addr flush dev eth0"?
I had a networking error on an unifi manager server (static IP) and ran the command: "sudo ip addr flush dev eth0" which seemed to help a few people in this thread. Which at first sounded logical ...
- 386
1
vote
1
answer
2k
views
prepend domain-search is overwriting rather than prepending
I have an Linux host running on AWS and I want to add a domain to the search. By default, the resolv.conf file looks like this
[ec2-user@ip- ~]$ cat /etc/resolv.conf
; generated by /sbin/dhclient-...
- 113
2
votes
1
answer
8k
views
NetworkManager fails to start gsm connection
I am trying to configure a gsm modem connection in linux using NetworkManager.
The details of the modem are as follows:
# mmcli -m 0
/org/freedesktop/ModemManager1/Modem/0 (device id '...
- 121
1
vote
0
answers
1k
views
Windows 10 home can I setup sstp server with new incoming connection?
I followed this guide to setup a vpn server on windows 10 home
https://www.howtogeek.com/135996/how-to-create-a-vpn-server-on-your-windows-computer-without-installing-any-software/
I forwarded the ...
- 111
0
votes
0
answers
128
views
Does enabling Reverse Path Filtering slows down network?
I am studying about Reverse Path Filtering (RPF) from this document. My understanding on Reverse Path Filtering (RPF) is that it checks for every request and see whether the source address is routable ...
- 101
0
votes
2
answers
900
views
Port-forwarding and port status
I have a host behind a router (Thomson TWG870) with the two forwarding rules:
1. external: 0.0.0.0:22, internal: 192.168.0.10:22
2. external: 0.0.0.0:26, internal: 192.168.0.10:26
There is a ssh ...
- 1,167
2
votes
0
answers
4k
views
Command to randomise MAC address in Virtualbox
I know that in Virtualbox you can go to VM -> Settings -> Network -> Adapter 1 -> Advanced where you can either set your own mac address, or click the randomise button.
I also know that ...
- 820
0
votes
0
answers
190
views
Home internet connection suddenly unreliable
I'm a bit at my wit's end so forgive me if this is a common topic.
I have a 4 MB ADSL line which I access in my house via wifi. The ADSL modem is connected to an Asus RT-AC68U wifi router via ...
- 155
0
votes
1
answer
2k
views
Disabling / Enabling POE on a port by port basis on a netgear smart switch
Ive got a Netgear GS108PEv3 switch.
How can i enable / disable the POE function on a port by port basis on this switch, i couldnt find anything in the manual or by hunting around the web GUI.
- 4,159
0
votes
1
answer
20k
views
Connection timed out for netcat after opening port in router
So, my situation is that I have one Windows PC and one PC with Kali Linux. On Windows PC I've opened a netcat listener on port 4444. Then on my router I've opened port 4444.
Finally when I go on kali ...
0
votes
2
answers
574
views
Network Switch Fiber SFP to LC
We have a fiber switch (pic below) We need to run another fiber switch in another area of the building. We are going to use LC cable as is the same in the 9F port. I see there is a SFP to LC adapter....
0
votes
1
answer
1k
views
NetworkManager to keep trying requesting DHCP
My home router didn't have power for some time. My desktop PC is connected by an Ethernet cable to this router, with a switch in the middle. As a result of power failure, the desktop lost its DHCP ...
- 3,318
0
votes
2
answers
2k
views
Can a PCIe WiFi card completely replace Ethernet cable despite its slower data transfers?
In my office, I have a total of 6 computers connected via LAN using Ethernet cables and is also connected to the internet with a VDSL router modem using switches.
I am having frequent disconnection ...
user726761
0
votes
2
answers
293
views
What type of Fiber network cable is this? Says 300m 10g om3 [closed]
I have some fiber cable I have to run in a building for someone. There was a guy who know all about this and was going to order the cable then I would help him put it in. He has just disappeared. ...
1
vote
0
answers
3k
views
Strongswan, how to configure ipsec site-to-site using psk?
I'm setting up ipsec site-to-site VPN connection (with pre-shared key auth method). However I'm unsure of the correct values to put in ipsec.conf.
vpn server ip - xx.45.40.46
encryption algorithm - ...
- 11
0
votes
1
answer
720
views
Local server works from duckdns but just in locak network
I've put a local web server in my local Windows 10 desktop machine. I've also setup a dynamic DNS using duckdns.org. Now if I try to connect to it from my mobile phone using myserver.duckdns.org and I'...
- 489
1
vote
0
answers
80
views
Figure out IP address of external device
I have an external device (a PCB crate) of which I do not know the IP address. Connected to this device is a PCB that broadcasts its MAC address. Ultimately, I want to know this MAC address.
I can ...
- 316
3
votes
0
answers
7k
views
Cannot restart dnscache (DNS Client) service
I have cached DNS records which Windows just won't to let go of. I, of course have tried ipconfig /flushdns many times which tells me it was successful, but isn't. I am unable to run net stop dnscache ...
- 450
2
votes
1
answer
121
views
Computer connecting to local LAN IP rather than dial in VPNs LAN IP
My home gateway IP has the same range as a dial in VPN's LAN that I need to connect to. When I try and connect to some of the devices on that VPN's LAN my computer will try to connect to the IP on my ...
- 4,159
-2
votes
1
answer
741
views
wireshark is telling my that the source ip is my router ip
I am new on Wireshark and having a trouble with capturing the packages. my problem is that Wireshark is capturing the packages until the router like if I ping to google.com he is showing me the source ...
0
votes
2
answers
391
views
Routing help please, policy based?
My home router is a custom built Arch linux box. For some additional privacy/security I have it set up as an OpenVPN client to an OpenVPN server, running on a VPS I operate. All of my home traffic ...
- 11
1
vote
2
answers
4k
views
Powerline Network Adapters dropping connection in specific cases
My Powerline Network Adapters are dropping my Internet connection in some specific cases.
If I use them (one is connected to my laptop, the other to the router) in some speficic usage cases, I can be ...
- 13
0
votes
1
answer
280
views
How can I set Openstack with NAT remapping?
I am using hypervisor as KVM and have one server to host Openstack services. I want to access my cloud server and instances(via floating IPs).
Because of the network limitations I am not able to ...
- 1
0
votes
1
answer
2k
views
Host can't talk to the guest VM when the IP is changed from DHCP assigned dynamic to static
TL;DR: Host can ping NAT connected Guest VM when DHCP IP is used on guest, can't when static ip used. Help.
So I've been trying to setup a NAT based LAN that the host can communicate with where each ...
- 171
2
votes
1
answer
4k
views
Docker: nginx-proxy through openvpn tunnel
I am trying to use DigitalOcean VPS as a openVPN server to access services (e.g. nextcloud) hosted on my home network through subdomains (e.g. nextcloud.example.com).
I have set up the following:
[...
- 135
0
votes
0
answers
41
views
Network connectivity with VPN on Windows 10
I want to be able to connect to my private domains remotely. To that end, I've set up a VPN server on my Windows 10 machine. However, once I'm connected, the server and client can't communicate with ...
- 1,001
0
votes
1
answer
92
views
Fast IP Forwarding to WAN, but falls off cliff between LAN subnets
I replaced my consumer wireless router with a linux box that has a quad-gigabit NIC PCIe card and a single gigabit NIC on the motherboard (for the WAN). After turning on IP forwarding, masquerading (...
- 568
0
votes
1
answer
3k
views
How to make a wireless network forget my device?
Im currently staying at a hotel, and the wi fi here is one of those that has no password initially but once you connect, a page pops up and asks for user and password (room number, last name). The wi ...
0
votes
1
answer
108
views
If I have two connections to the internet how do I choose which applications use which
I know that I can bridge two networks in Windows. But I have a problem with that. One of my connections is a mobile broadband that has no data limit but has relatively slow speeds. The other is a wifi ...
1
vote
1
answer
773
views
How to connect to a very old winCE PLC from external network?
I have this old PLC running WinCE 3.0. It has IP 192.168.0.99 and TCP port 1200 so i can connect from PC. This works OK when i have both PC and PLC on the same network.
I would like to access port ...
- 111
0
votes
1
answer
4k
views
How to check whether a lagging live stream is the Server or ISP’s fault?
I decided to try out IPTV. At times it works fine but very often almost all channels start buffering at random intervals. I want to figure out whether my ISP is to blame or whether it’s the IPTV ...
- 677
0
votes
3
answers
1k
views
If my ip is 192.168.0.108 how can I access a virtual machine within a range of 192.168.1.0/24?
My Network range is : 192.168.0.0/24
I got a VM with static IP preconfigured within the range of 192.168.1.0/24
I started the VM but don't have access to the netwrok. Don't know the password to ...
- 101
0
votes
2
answers
14k
views
Cannot turn on Network Discovery on Win 10
Windows 10 Pro version 1709 running on a Dell XPS 8900 w 24Gb RAM.
I am unable to turn on Network Sharing. I suspected that the Defender Firewall was preventing it.
If I turn off Windows Defender ...
- 3
0
votes
0
answers
3k
views
Using pip behind a PAC proxy
The proxy at my workplace is specified in a PAC file which is applied to browsers, but not the command prompt/PowerShell. This means I can't use pip, virtualenv or Python libraries that need web ...
0
votes
0
answers
220
views
MacOS: No write permissions after copy files from Windows
I have Mac mini (High Sierra 10.13.3) as a server. Server has external HDD formated as Mac OS Extended (Journaled). I'm using a PC (Windows 10, NTFS) for downloading files. When I copy files (LAN, SMB ...
- 9
0
votes
1
answer
6k
views
Windows 10 + Roaming Aggressiveness to highest but not wireless network switch?
Windows 10, Realtek latest driver, Roaming Aggressiveness to highest, I can see in wifi network status that the signal goes down and down, and I've another wireless network with stronger signal, and ...
- 1
5
votes
1
answer
2k
views
Identify reason for DNS resolution delay via VPN
I'm frequently in the position where I work from home and use the companies VPN to access internal services, which is why I also use the internal DNS server. Everything works fine and without great ...
- 235
1
vote
0
answers
1k
views
Getting Timeout when connecting to StrongSwan IPSec
I've tried to set up a Root Server in the public Internet with StrongSwan to use it as a VPN Server. Plan is to tunnel all Internet Traffic for some devices via this server. I've also set up an ...
- 11
2
votes
2
answers
131
views
Routing between two isolated systems without VPN
Weird scenario for you:
I have two Raspberry Pis running Raspbian 8 (jessie) connected to each other by a cross-over cable between their Ethernet ports. The Ethernet port on unit A is statically ...
- 41
4
votes
0
answers
2k
views
Creating a captive portal splash page for rasberry pi running hostapd as wifi access point [closed]
I've created an access point on a raspberry pi which users can connect to from their phones to access a local site on the pi. However, I'm trying to reduce the user flow from this:
connect to wifi ...
- 141
0
votes
0
answers
198
views
Can I prioritise one UDP stream over another in linux?
I made a small program in python that produces two UDP streams through Gstreamer framework.
One is the main stream, labeled A, that MUST go through on port 3333. The other one is a secondary stream, ...
- 101
2
votes
0
answers
745
views
How to configure routing table correctly with point to point connection on multiple interfaces?
I have 2 servers each of them has 3 network interfaces. 1 interface ("eno") is used for internet connection via gateway and 2 interfaces ("ens0", "ens1") are used to connect both servers directly ...
- 21