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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Unable to access sites behind reverse proxy

I'm trying to set up a reverse proxy on my home server and I cannot for the life of me figure it out, so I was hoping you guys would be able to help. I'm trying to set it up Jwilder's nginx reverse ...
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9 views

Monitoring all outbound TCP connection attempts on Windows [closed]

Can anyone suggest a utility that can monitors all outbound TCP connection attempts (not just the successful ones) on Windows? I am trying to investigate random connection failures by a client that ...
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arp can't resolve another Windows 10

I have more than 10 devices on the same subnet. On a Windows 10 Pro, arp can resolve every device's MAC except another Windows 10 Pro. On the other Windows 10 Pro, it is the same, ie its arp can ...
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Its Just Complicated [closed]

So for a while ive had this idea. to WoL my pc from essentially anywhere in the world. ive just started studying It in college and networking. I have a Huawei B315s router and a mikrotik. the Huawei ...
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19 views

Dual WAN router configuration

I have one ISP working (WAN1) at the moment on my Linksys LRT224 Dual WAN router. I need to setup the second ISP in load balancing mode. I did something so far (see image) but I am not sure if I ...
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smtpd on OpenBSD - reverse DNS lookup fails

I am running smtpd on OpenBSD behind pfSense with HAProxy (all software current stable). Generally everything works as required. What does not work is the reverse lookup on connect. I get [...]smtp ...
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23 views

SCP through intermediate host and no strict host key checking

This is probably not the first question about using scp with an intermediate host, but the way I access the target host through ssh has a bit of extras which I am not familiar with, and I have not ...
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12 views

Hyper-v Default Switch static IP

Is that possible to set up static IP address for Hyper-V's default switch adapter? Every time when I reboot my PC the address changed.
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10 views

How to configure squid proxy to forward incoming requests to another proxy using pac file with authentication?

I'm behind a corporate proxy and am using Ubuntu. The proxy is configured with a PAC file, which also requires authentication. However, using the proxy auto-config URL in Ubuntu settings is borderline ...
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32 views

Can't use apt or ssh inside Ubuntu VM with Bridged Adapter

Host is Windows 10, guest is Peppermint 10. Background: I'm attempting to use a separate network from the host on the guest VM, such that they do not interact. On the Windows 10 host there are 3 ...
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39 views

How to create a .bat file to input IP address and run nbtstat -a command

Any suggestions? This is a wrong code: @echo off echo Enter IP address of remote computer: set /p ip= nbtstat -a %ip%
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Win 10 ethernet connection is randomly displaying different names. Some have no internet connections

Windows 10, Turn on computer and have no internet. Network is connecting to several different names. Spanman13, connects with internet, ip 192.168.0.1. Spanman, connects but with no internet, 192....
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26 views

How to bridge multiple adsl router in a single network?

I have two extra adsl router(SSID named as 0 and 1) and a main router(SSID named as 2) provided by my ISP. Now I want to extend my internet connection via wifi or lan using those two adsl router. I ...
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18 views

Why nslookup is not passing throunght my local CNTLM proxy?

I am not so into networking and I have the following problem. I am working on an Ubuntu 18.04.2 LTS server inside a network of my customer. Here I have the following problems that seems to be related ...
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21 views

How to change DNS for eth0?

Root user: systemd-resolve --status Output: Global DNS Domain: openstacklocal DNSSEC NTA: 10.in-addr.arpa 16.172.in-addr.arpa 168.192....
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26 views

This site can’t be reached + URL check: timeout

During installation of a software in the PC I got problems with grub system in Ubuntu 18.04.4 Desktop, which I resolved copying, from an installation iso image, the /bin/bash folder: https://askubuntu....
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My vm's don't communicate directly

I am French: sorry for my English. I have a server with several virtual machines with failover IP (OVH). Everything works fine, well, almost ... My machines are connected in bridge: bridge name ...
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28 views

Why is the same IP address assigned to multiple devices on one network? [closed]

Why I it tht every single device on my network has the same IP address and when I try to utilize a VPN service, it won't work.
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3answers
47 views

Why do I need Bridge mode on my main router to connect a second one?

I want to buy a better router than the one my ISP provides me. I can’t just ditch my ISP router because it is modem and router at the same time. What I’ve been told is that I would need to set my ISP ...
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15 views

Does KiTTY still support background image for terminal?

Does KiTTY still support background images? I have a folder with a portable installation with "KiTTY - 0.70.0.6p @ 03/10/2018" and there was no option for autoreconnect PuTTY - Automatic Reconnect ...
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How do I connect to ports on my LAN in selfhosted setting?

I am tearing out what little hair I have left with this one. I am running several services on a local network PC on ports 8989, 7878 and 9117 and I am able to access them with no issues from another ...
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make apt-get and other programs work through a specific network card?

My objective is to have some programs (on the host machine) access software running in the VM (i.e. my guest OS-es). Further want programs in my guest machine access the internet. For e.g. I want my ...
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21 views

Dynamic DNS in 2020, expected downtime on lease change [closed]

I am looking into Dynamic DNS now that most of the pros and cons written are 5 - 10 years old. The purpose would be to host a server on a residential IP address that would be expected to change at an ...
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18 views

What could cause network lag to increase when the number of connection goes below 3

This is a Linux server, running Minetest 5.1. When 3 or more people are connected, lag is usually some fraction of a second. But if only 1 or 2 people are connected, lag can jump to 3 seconds or ...
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36 views

Access bridged subnet

I would like to use ISP2 instead of ISP1 internet from PC1 computer. But I'm not even able to ping antenna A, however, antenna B shows that it is connected to antenna A. I would also like to access ...
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20 views

How to fix Symmetric NAT Router Router?

I am trying to host game on game ranger , it gives me the following message: Your internet connection is behind a Symmetric NAT Modem/Router that will prevent you from hosting all games, and from ...
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1answer
57 views

Route LAN IP traffic through openvpn client

I am trying to share a vpn clients with other nodes on the lan. I have an ubuntu server running a openvpn client on my LAN. The following is my network diagram: The server is also running some web ...
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How to import Sophos SSL certificate in Kali Linux

My College has put on a Sophos Firewall and we were told to import SSL certificate in Browsers to access the internet. Even though I have done it for the browsers but my Kali is not able to connect to ...
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Proxy Socks5 and allowing UDP trackers connection?

OS : Debian 10 Software :Tixati 2.66 Hey hi guys so lately i had some trouble with my torrent client software (stalled) so i changed for tixati , im a Ipvanish member and so for torrentting i use a ...
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Streaming DVB-C contents into my network [closed]

I have exactly one big screen in my home, and that is my PC monitor. But due to limited amounts of outlets (2), I had to make do with a couple of multi-plugs, which is not a sane solution, which is ...
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30 views

Switch output distribution and how it puts data on output

In a Switch queuing model, should we consider a Poisson process ( Time intervals between two arrivals and two departures follows exponential distributions ) OR Should we say only the input follows an ...
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Windows sending LLDP packets

We recently upgraded a client's switch to a managed Dell switch. This switch connects to the users computers (also Dells). On the switch, we're getting errors in the logs: %LLDP-3-MAC_PHY_CFG: ...
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Debian DHCP Client can't find DHCP Server

I have a big problem with DHCP client on Debian. Fresh Debian 10 installation (from debian.org), DHCP Client can't find DHCP Server Logs from syslog: Listening on LPF/enp2s0/<mac> Sending on ...
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38 views

how come my non-connected NIC is visible?

I have a number of NICs in my Centos7 box, eno1, eno2 and enp2s0f0, enp2s0f1, enp2s0f2, enp2s0f3. The only one connected with a ethernet cable is eno2, however, I am able to see all except eno1 from a ...
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Is an ongoing RDP connection a threat?

There is much information about how dangerous it is to have RDP open to WAN. But let us ignore all that risks with open port etc. for a moment. Let's consider the case when we have an ongoing RDP ...
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OSSIM server repeatedly tries to connect to flagged IP with IOC (Debian)

This is not so much of a OSSIM question, but more of a Linux > Debian question. So I'm running OSSIM 5.7.6 on Debian 8 on a VM and as of late, the server repeatedly tries to connect to two IP-...
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Custom routing based on destination IP and/or port

I have a Linux server with multiple VLANs configured on it. They are like: VLAN1 - 10.0.0.1/26 - GW: 10.0.0.62 eno1 VLAN2 - 10.0.0.64/26 - GW: 10.0.0.126 eno2 VLAN3 - 10.0.0.128/26 - GW: 10.0.0.190 ...
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How to Install the Kali Linux ISO in VMware 12 PRO [closed]

I want to install the kali linux in VM Player 12. But i am not getting the option of kali linux in it.
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14 views

Ethernet Not Connecting to Switch

Having some trouble connecting a switch to my home network I have the modem running a line into the switch, then a second line out of the switch onto the wifi router. The wifi works fine, however ...
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29 views

Can connect to the internet when gateway IP settings are in 10.0.0.* scope but not 192.168.0.* scope

My default router settings use 192.168.0.1. All of the devices in my house can connect to the internet and the gateway when the IP range is set to default except for my Ubuntu device. My ubuntu device ...
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1answer
88 views

What is the difference between using a router and connecting a PC straight into the wall socket?

I moved in to an apartment where I can simply plug in my laptop to the internet by connecting it to a wall socket using an Ethernet cable. I was wondering what is the difference between using this ...
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1answer
40 views

public service over cellular network

how does it possible that applications in a cellular network are using the outside servers resources.but if you run for example a simple web server other's cannot see your web pages through the public ...
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21 views

Iptables block all traffic except port 80,443,22

Hi I have a VPS with docker-compose installed but the redis server on port 6379 and selenium-hub on port 4444 is opened to the outside world, which i DONT want to. I want to block all traffic to my ...
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42 views

How can I easily copy files to Windows PC?

On my small home network of 3 computers, I want to sit at my desk and copy files over to one of my other 2 PCs - all running Windows 10. For a while, Windows 10 required us all to be in Homegroup to ...
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25 views

Redirecting DNS to localhost in a cgroup

I'm trying to make use of cgroups to force certain applications to bypass my VPN. While it is working for the most part I'm having a little trouble with DNS queries. The VPN configures only the ...
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1answer
46 views

Can ping but received “Remote side unexpectedly closed connection” on latest version of putty SSH

I understand that this is a duplicate question, however, in the other questions, the solution does not apply to my circumstance. I'm currently using the latest version of PuTTY, 0.73 on Windows. I ...
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40 views

Error 0x104 in Remote Desktop Android app while connecting to Windows 10 PC via non-static global IP

I'm trying to establish an RDP connection to my own PC running Windows 10 using Microsoft RD Client app for Android. Everything works fine when I'm connecting from a local network to a local IP (e.g. ...
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2answers
46 views

Need to connect Windows 10 PC to wired LAN but block internet. Internet through wireless

Is there a rather straightforward way to allow a specific Windows 10 PC on a LAN network to access LAN resources through ethernet, but allow internet only through wirelessly connected to an access ...
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39 views

Switching traffic through a docker container

I am trying to test some switching software that I have virtualized into a docker container. This is the topology I am trying to achieve: When I try to set this up the Iperf client times out as ...
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17 views

Why do ICMP packets > 71 bytes timeout?

On my parents' network I noticed that ICMP packets larger than 71 bytes do not go though. ping 1.1.1.1 -l 71 (and below) is fine ping 1.1.1.1 -l 72 (and above) fail with Request timed out I tested ...

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