Questions tagged [internet]

The Internet is a global system of interconnected computer networks that use the standard Internet protocol suite (often called TCP/IP, although not all protocols use TCP) to serve billions of users worldwide. It is a network of networks that consists of millions of private, public, academic, business, and government networks, of local to global scope, that are linked by a broad array of electronic, wireless and optical networking technologies.

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13 views

read-only access on Frtizbox FTP [closed]

I am trying to access the contents of my hard drive which is connected to a FRITZ!box 7490. The FRITZ! box can be accessed by both SMB and FTP. Sometimes I need to access files from outside of the ...
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1answer
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Observing conflict on VPN when multiple users on same network attempt to connect and access EC2 Instance behind security group

We have external services that are behind an Amazon EC2 security group, users connect to a VPN (this is supplied and maintained by a third party) so that they are given an IP that is consistent over ...
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1answer
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Is it feasible for a mobile app like a peer to peer torrent app to discover peers via Internet, not just direct Wifi? [closed]

If I create an app that will be installed on different devices (Windows, Android, Apple). Different devices will be connected to Internet via different ISPs. Mostly devices will have changing dynamic ...
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Do modems have public address? [closed]

I know for a fact that when we are connected to Wi-Fi and we search something in the Internet, the server we are requesting from will return the files to our IP address and this IP address is the ...
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I'm looking for a way to monitor and log the availability of internet at a particular location

I'm troubleshooting an issue which I suspect may be related to unreliable internet. I'm looking for a way to create (or a tool that already does create) a log of internet access over time. E.g 8am ...
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35 views

Internet goes down when someone access our URL?

Setup: Have a metal server in our office closet, host OS is windows 10. It hosts 4 VMs, one of which is an internet facing application and accessible via URL. The server has 2 network cards, the first ...
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3answers
55 views

Internet speed required to use Microsoft Teams from Japan to the USA [closed]

I really hope this is the right place to ask (this is my first question here so please go easy). I have a great opportunity to go to work remotely (HR signed off on it) from Japan. I have a place to ...
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23 views

How to set-up a secondary/redundancy LTE internet connection?

We're a small-medium office in Vancouver Canada, and we're looking to set-up a secondary/redundancy LTE internet connection. We're looking at purchasing the Unifi Dream Machine Pro to solve this issue,...
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33 views

How to find the route that has internet connection and set it as default (lowest metric) with NetworkManager (Ubuntu)

~$ route Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface default 192.168.30.102 0.0.0.0 UG 100 0 0 eth0 default ...
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1answer
76 views

IPv4 Address Range Shortage Inquiry

Recently I was looking over RFC6890 (link here) to find out more about the current IP addressing schemes that are in place and noticed a rather large IP address range that is listed as "Reserved ...
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Where can I get outage updates/alerts for transoceanic cables (and other tier-1 fiber backbones)?

Is there some site that aggregates status updates from the companies that manage the transoceanic fiber cables so that I can get a world view of global internet outages that break connectivity between ...
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Is a reverse proxys network speed limiting the connected servers?

I am just curious: If I get a server for use as a nginx reverse proxy that has only like a 100mb connection to the internet, will this effect the download speed of my 500mb connection nextcloud server ...
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43 views

RRAS server in Azure - internet access

This question seems to have been asked before but I cannot get this to work no matter what I try. I have a Windows Server 2019 VM in Azure running RRAS. I have configured the server using SSTP and ...
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1answer
38 views

DHCP Server stops handing out leases

I currently have a DC running Windows Sever 2008 R2 (yes I know) and for the past two weeks, when employees travel back to the office, they can't connect to the internet unless I do one of two things. ...
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How to find what makes my website speed less?

about some days ago we have found our users with one of our min Internet Carrier have speed problem with our website. after investigation we have found that the speed of website content download slow ...
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31 views

How can I easily (e.g. as easy as rsync or SCP) do a high speed (1gpbs) file upload over an Internet-latency link?

I recently asked a similar question about how to transfer large (many gigabyte to many tens of gigaytes) files over the Internet when latency is high. I got a great answer, but only for downloads. ...
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1answer
3k views

OpenVPN “redirect-gateway def1 bypass-dhcp” setting kills SSH access but is needed for internet access

I am running an OpenVPN server on Ubuntu on AWS with the following server.conf: local x.x.x.x port 1194 proto tcp dev tap ca ca.crt cert server.crt key server.key dh dh.pem auth SHA512 tls-crypt tc....
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1answer
30 views

Two or more hosts in traceroute answer

Hi I have strange behavior of a traceroute to one of my public IP's In one of a line I have multiple hostnames with timing like in the folowing example, on the 5th line traceroute to dns.abc.com (111....
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28 views

How can a process executed by a group Managed Service Account utilize a proxy when reaching out to the internet?

We have computers on an air-gapped network that will require Visual Studio to be installed and updated. Since the Visual Studio installer is highly customizable, Microsoft did away with the offline ...
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18 views

Vyos: Redirect All Users Web Request to Webpage When Internet is Down

We are a small company and are currently using Vyos router for our internet connection. I would like to know if it is possible to redirect all the users web requests to a static web page whenever the ...
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1answer
393 views

RTNETLINK answers: No such device /Wireless card /kali linux

I've got an issue with alfa AWUS036NH. I cannot set it up. I get info : "No such device" or "Input/output error". I used command : "sudo ip link set wlan0 up" Kali version :5.5.0-kali1-amd64 release:...
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2answers
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Can a server behind a load balancer get responses to its requests? [closed]

Assume there are two servers A, B that are behind a load balancer, for example, they could be two docker containers. If server A makes an HTTP GET request to some-site.com, it is possible that the ...
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2answers
226 views

How to responsibly discontinue receiving email at an old Internet domain?

My organization owns Internet domains that we no longer strongly use. Web requests typically simply redirect to our main corporate website, and except possibly as described below, there is no ...
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1answer
23 views

i want to visualize myself about bandwidth of internet [closed]

as we know bandwidth is just a way through which data flows.20 Mbps internet means 20 mega bits per second and 40 Mbps means 40 mega bits per second.i guess 20 Mbps means 20 Mb of data is retrieved in ...
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1answer
121 views

Is it possible to know the location of an Anycast IP since they can be at multiple places at the same time?

With a Unicast IP we can know the geographical location of an IP address easily. But an Anycast IP address can be at multiple locations at the same time and depending on how close you are to the ...
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36 views

Internet packages went crazy

So... I have a router (wireless, ASUS RT-N18U), connected to 4 pcs via cable and 1 tablet wireless. After I noticed some performance drops in my network speed, I checked the traffic manager. The ...
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99 views

VoIP phone only working in one direction

Ahoy friends. Currently i got 2 networks connected via routing. I got a VoIP device connected to one of the networks, to be routed to the other one. Everything else is working on this configuration of ...
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1answer
102 views

How to determine whether an internet connection is wired or wireless?

I work in the IT department for the residential housing area at my university (network operations is separate from ours). I've wondered how is it that when someone registers a MAC address on our ...
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3answers
565 views

Are there good ways to transfer very large files (2TB) over the Atlantic?

My company regularly needs to send about 2TB of data from the US to the UK (the size of the compressed delta is 2TB). Even though each side has good internet connectivity, sending files directly is ...
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66 views

Changing DHCP range makes me lose internet access

Hy, I'm trying to increase my network ip address from: IP DHCPIpv4: 192.168.1.10 - 192.168.1.250 Mask: 255.255.255.0 Server: 192.168.1.254 Gateway: 192.168.1.254 To IP DHCPIpv4: 192.168.0.10 - ...
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1answer
41 views

Is there a way to block internet access using iptables for particular access points

In our company we have several access points. For some of them in the production area it should be disallowed to use them for accessing the internet. The router we have has (at least) two interfaces: ...
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3answers
932 views

What exactly is the difference between public and private IP addresses? [closed]

Everywhere on the Internet the same answer is given, private IP addresses exists only inside your network and public IP addresses are what everyone sees on Internet. What exactly do they mean by the ...
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1answer
289 views

How can I easily (e.g. as easy as rsync or SCP) do a high speed (1gpbs) file transfer over an Internet-latency link?

A few times per year, I need to transfer massive files (20+GBs) over the Internet (latency 20-100ms), but with reasonably fast connections on the order of 1gbps between servers. Unfortunately, when I ...
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71 views

Microsoft Azure | Internet Connection Problems

I have 2 Virtual Machines on Microsoft Azure and I have the same problem with both of them... I can't use internet, when I want to open a site on Windows, it says 'This Site Can't Be Displayed' and I ...
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2answers
64 views

Setting up a subdomain to a distinct server

I am setting up a subdomain on Google Domains in the form subdomain.mydomain.com, so that this URL lead users to my server (AWS EC2 instance). In Google Domains I can configure subdoamins with ...
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1answer
222 views

OpenVPN connection ok but no Internet access

I'm learning to use OpenVPN and I bought a VPS with OpenVPN (a default installation offered by the hosting provider). When I configure my client to connect to the server, I notice that the connection ...
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1answer
2k views

No internet on secondary router in cascaded router setup

I recently bought a Cisco RV130W router and plan to use it as a secondary router in a cascaded router setup. I want to do this so I can isolate my own devices (NAS, printer, PC, Laptop) and prevent ...
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1answer
53 views

How do domains connect to internet and email (servers) globally?

I know of domain name registrars, that you can use them to acquire your own domain name for a website; but, how do they connect to the internet and email (servers) globally? I'm not exactly sure how ...
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1answer
3k views

OpenVPN works well with mobile data, but can not connect through ADSL

I've installed OpenVPN on a CentOS machine and created a user on it. Then I installed the client software on my PC and tried to connect to the VPN. The strange problem is that when I am using the ...
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1answer
90 views

How to diagnose source of website blocking?

When accessing sites through my ISP, certain sites don't load. The DNS resolves fine (via nslookup; also, the hosts file is fine), but then accessing them through any port times out (eg. tracert or ...
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1answer
5k views

Debian static ip, can not bring up interface: “RTNETLINK answers: File exists”

I have a fresh installation of SELKS(Debian 9) and I configured the network manually, but I can not bring the interface eno1 UP. I get the error: RTNETLINK answers: File exists ifup: failed to bring ...
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2answers
8k views

How to Bond Two (Multiple) Internet Connections for Increased Speed and Failover

We are located in a rural area with two slow ADSL connections (3.5/0.5 Mbps) and wanted to improve connection speed and reliability by somehow "combining" them. The following describes our solution ...
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1answer
31 views

Connection to server blocked for no reason [closed]

I have had a VPS in NL for the past 5-6 years and it's been working great. Now one day I suddenly can't access/ping/anything the VPS from my home connection (tried different computers) The confusing ...
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269 views

iPerf3 client download comes back with really slow results when tested on a long fat pipe for my FreeBSD server

So I operate FreeBSD server that is connected to a 300 Mbps symmetrical fiber line. It often has to serve users on a different continent so the tested ping is anywhere from 100 to 300 ms, and in ...
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3answers
219 views

What causes a server to block internet access

I am running an API on a server. A customer is polling the server with API requests 8-10 times per second. I know this is bad practice and I am working on getting the customer to change. But in the ...
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2answers
110 views

How exactly DDoS protection is built

When speaking about the DDoS protection, I can understand that it is massively dependent on the filter capacity. When building your own DDoS protection, it is dependent on the amount of traffic you ...
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2answers
280 views

dedicated tunnel between two data center?

I sometimes hear the word about dedicated tunnel between two data centers. Say there is dedicated tunnel b/w DC1 and DC2 . DC1-> DC1 ISP -------- Internet ------ >DC2 ISP --------> DC2 My ...
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1answer
129 views

Blended Bandwidth with multiple carriers How to configure IP address

I have seen many colocation companies offering something called "Blended Bandwidth" and that makes me wonder how do they do it? Here is my example. If I would get two internet services, from ISP-A ...
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6answers
9k views

Why the discrepancy between Speedtest and Wget?

My customer complains about low internet speeds. When measured with Speedtest.net speeds are acceptable. Periodic measured downloads are 10% to 30% of the nominal speed. I cannot explain that. Some ...
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1answer
107 views

When using DNS from another continent, will IP's and CDN's reflect host country as well?

Lets say I am using Russia’s Yandex DNS from Canada, or America. Will I be served IP's and CDN's that reflect the host country of said DNS? And will they tend to be nearer to that nation?

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