Questions tagged [internet]

For questions about interconnected networks.

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14 views

Opendns is not working in my android [closed]

i am using wifi on my android whose owner (wifi owner) is someone else. Recently i signed up on opendns and typed my dynamic ip address i-e., 182.185... and customised sites that should be filtered ...
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0answers
13 views

Network for remote services [closed]

I am working on a scenario in which a service provider maintains healthcare devices at many different hospitals. Each of these will create large files (up to 5GB) a few times per day that need to be ...
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0answers
7 views

Implement a process in eTOM [closed]

I have a question related to the operations as described in eTOM (definition bellow). The Business Process Framework is an operating model framework for telecom service providers in the ...
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0answers
11 views

Windows network icon shows internet access while there is no internet access [closed]

I've two networks in my company, one is an (INTERNET) network and the other one is (INTRANET) which is not connected to the internet, the two networks are physically separated from each other, the ...
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1answer
35 views

Port mirroring question

I've got some questions about my port mirroring configuration. I'm working with alcatel omniswitch. After configuring port mirroring my destination port is loosing network connection and it can't ...
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3answers
88 views

which is faster and why: One big file or split the big file into chunks, then transfer it over the Internet

Let's say I have a file that's 10GB and I want to transfer it over the Internet. Will it be best and fastest if I split the file into many smaller files and send it, then reassemble it after transfer, ...
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2answers
34 views

WiMax technology

Does WiMax technology is used by an ISP for providing cellular internet services? Are WiMax technology different from cellular technology for providing internet? Please mention the difference if ...
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1answer
31 views

Pros and cons of the idea of parallell data transmission

I am learning the basics of internet protocols and related principles. I recently performed experiments comparing UDP and TCP. But when I did that (using the ttcp program) it was only one process and ...
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1answer
24 views

Ho to implement RPKI for our Network

I would want to implement RPKI in my network. I have gone through some documents by which i cant understand the implementation process. What are the steps i should follow to implement RPKI in my ...
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2answers
41 views

Using 2 different ISP In case one dies

It's my first ever post in here and I hope not the last. I'm looking for some advice. I'm trying to reduce my internet downtime for a local network. My setup. Mix and match computer environment (...
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0answers
19 views

Are there any other notable protocols besides IP on OSI layer 3 in the internet? [duplicate]

Are there any other notable protocols besides IP on OSI layer 3 used in the internet?
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0answers
17 views

Connect LAN port as internet to DSL-2750U [closed]

I want to use my router as a normal router by just using a LAN cable instead of WAN. The network is accessible to one of my computer via LAN(2 LAN cables, one I the one which provide internet and the ...
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1answer
56 views

Why Internet protocol is divided in rows?

In simple words, why IP packet is divided in rows each one is 32 bit in length? For example this attached image shows the IP packet has 32 bit in the first row then another 32 bit and so on. Is it ...
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2answers
42 views

How fast DNS Propagation can practically be? [closed]

I've found via web search how info (i.e. DNS name-IP number pairing) is updated on authoritative DNS servers: https://www.freecodecamp.org/news/understanding-the-domain-name-servers-46c6bcf9afa3/. ...
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0answers
52 views

What is UDP traffic on port 80 and 1024? [closed]

I am currently investigating a set of anonymized passive Internet traces from a monitor in New York. There I am seeing a lot of traffic on UDP ports 80 and 1024, and I was wondering what that could be....
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1answer
43 views

How cellular networks gets internet? [closed]

Mobiles get internet but how? From the towers, we used to get signals and communicate with others like calling or a message but coming to the internet how in the terms of networking terms like radio ...
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1answer
37 views

What happens if we try to access an IP Address that does no exist

Beginner Question: I just read an article talking about how the internet works and how routers make sure that packets arrive at the destination. However there is one thing that is not explained ...
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1answer
37 views

Bonding and switching between 2 different Links/WANs/Interfaces

Before I ask anything, I'd like to say that I pretty much searched a lot (to what I know of from keywords and terms such as "bonding" "wans" "links" "failover" "aggregate") and I couldn't find any up ...
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1answer
44 views

MAc address or IP address? which one gets used from my pc to router? [duplicate]

Question 1) which one is used nowadays? NAT or PAT? Question 2) as I knew, when my pc requests some website, what happens is , the data(packets) from my pc go to router. then router makes the request ...
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0answers
72 views

Block internet on a Cisco catalyst 3560 port

Good day Is there a way to block a specific port in a Cisco Catalyst 3560 switch to block the user from accessing the internet but still have full access to the internal corporate resources. The ...
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2answers
972 views

How do routers on the backbone avoid IP address conflicts?

As the title suggests, how do ISPs, and other networks connected to the backbone ensure that their host network address isn't already in use by another backbone node, as there is no controlling device ...
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1answer
55 views

Estimating bandwidth requirements and productivity gain from traffic data

My small office has a 30Mbit/s internet connection, on which two or three people work. We could get twice the bandwidth at a substantial cost. I imagine a bandwidth upgrade would slightly improve ...
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2answers
190 views

What's the role of Default Gateway?

It acts as the "gateway" to the Internet,but also from what i have read,it's the last thing a packet would be sent to while trying to route (when checking the senders' route table). Maybe it's the ...
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6answers
6k views

What stops someone from configuring their network with IP addresses they do not own?

Here's the scenario. I was picturing a university that bought a range of IP addresses. I think they'd still be inside a ISP (right?), but they'd have freedom to configure stuff the way they wanted. ...
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8answers
6k views

Why are IP addresses given to each interface and not device? What would the implications of that be?

Why do we need to give IP addresses to each interface? Wouldn't giving one to each device be enough?
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1answer
128 views

Analyze Network Traffic by Autonomous System Number?

I'm looking for the way to take an estimate consumptions toward internet per Autonomous System Number which could help me to make a decision if it's necessary to establish a peering with this AS's ...
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1answer
240 views

In one organization having two ISP which configured on fortigate firewall ? How can we do the failover for internet?

Organisation don't have AS number .As of now we are doing manually route for any ISP at a time. when default Internet link is go down that time making second link enable on firewall. I saw the some ...
3
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3answers
99 views

How is traffic forwarded though IXPs if route servers do not forward any traffic

while i was studying about IXP route-servers, i read that they do not forward any traffic. I get that a route server is a "control plane" entity and it is used for easier bgp peering. However, i ...
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1answer
555 views

Download Internet Routing Table

What is the best way to download a snapshot of the Internet's IPv4 routing table? I need check if IP addresses are routable. It needs to function offline, so a looking glass server won't work. I know ...
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2answers
95 views

Can large ISPs really offer 1Gb “dedicated” service to every home and business?

Hopefully this is on topic for this site. While researching synchronous carrier service, so called EDIA or Ethernet Dedicated Internet Access, to a rural location in New Hampshire, USA, I came across ...
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1answer
51 views

Multiple Networks on Sonicwall with no access to cisco firewall

The issue im having is that i have 2 networks with 2 internet connections. We now all of a sudden have a POS system handling our network. This system blocks our email and a bunch of pages we use. They ...
4
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2answers
870 views

Internet structure and ISP networks in detail

I am studying about internet structure, ISPs and their interconnection. However, I have trouble connecting some terms and understanding the greater infrastructure of internet in more detail. I will ...
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1answer
562 views

Are Protocols written in programming languages?

The protocols such as HTTP, IP, BGP are written in programming languages or simply plain English text ? If it is written in plain English, then how it is communicated with web browser, switches/...
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3answers
2k views

Need help understanding how packets travel across the internet

I've been learning about networks recently at a new job, and I did a presentation on what I've learnt so far. When I was describing the relationship between the datalink and network layer, I mentioned ...
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1answer
34 views

Are there any advantage of using multiple threads for a file upload, for an internet connected node? [closed]

I got asked in an intervew recently to design a file upload feature. After initial discussion, The interviewer asked if I can design for multiple threads. My thought was, As the network bandwidth is ...
6
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2answers
215 views

Why is internet speed called Bandwidth?

Why do we refer to our internet speeds as "bandwidth" with units of measurement like "10 Mbps"? As I understand it, Bandwidth is, as the name implies, the width of the frequency band, typically ...
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2answers
800 views

How to find a AS-SET of an asn?

How can we find the as-set of asn? For Example I have the asn:32934. I want the as-set?
18
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2answers
3k views

Is it common for ISPs to connect to each other directly?

I'm reading up on the relationship between latency and ISP interconnectivity (that higher ISP interconnectivity results in lower latency, which makes sense to me). My understanding is that IXPs ...
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1answer
544 views

How can I reduce latency to Australia from another country? [closed]

I often do a lot of work from the UK to destination networks in Australia be it voice calls or something more benign like gaming. Both of which work best with the lowest RTT possible. On average the ...
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3answers
135 views

Why do we need an ethernet MAC address? [duplicate]

Don't think it's a duplicate. I've searched really many articles and couldn't find the satisfying answer. I understand : how ARP works MAC address is an unique address for each NIC IP is network ...
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1answer
115 views

How can I use a firewall as Internet Breakout?

I am currently installing a firewall in my company (using OPNsense) but I was asked to use the same system as "Internet Breakout" as well. Does anyone know how to accomplish this? I understand that ...
2
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1answer
70 views

What does 22/23 and 10.3/11.4 mean and why cannot access internet?

What does this specification mean? I asked the one who gave me this but I did not understand. Vlan 22/23 192.168.10.3/11.4 a) Does 22/23 mean that 23 subnets have been allocated b) The forward ...
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0answers
37 views

Internet not working [closed]

I have this types of network in my office. Recently we have moved to new i BSNL internet. My problem is when i bypass router and connect poe cable to computer internet is working but when i put ...
2
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1answer
95 views

Definition of bandwidth capacity for an internet connection

First, I want to test the data rate of a fibre-optic internet connection, but I understand that results are affected by the circumstances of the test, like number of hops between the CPE and the other ...
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1answer
740 views

What is the maximum distance that a cable/fiber optic internet connection can operate without the internet quality degrading? [closed]

I hope that this is not an ignorant or misinformed question, I am new and I'm trying to learn more about internet provision. I have read that DSL has a maximum distance of 18,000ft (or 5.5 Km) before ...
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0answers
101 views

Frequent Internet Disconnection [closed]

Hello everyone! I am relatively new to this forum, and wanted to get some useful feedbacks and resolution from "network-PROs" on my problem.. I have a network with a main router connected to the ...
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4answers
2k views

Can we run the Internet on circuit switching?

Generally we use IP and ATM for data communication and can we use circuit switching for data communication ? Can we use circuit switching for Internet ?
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3answers
2k views

Is QoS an issue for VOIP calls over the Internet? If not, why not?

I'm trying to decide whether I should buy SIP trunks from my ISP or a 3rd-party. As I understand it, it's important to maintain QoS on an internal network (i.e. prioritize VOIP traffic). Is this not ...
3
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2answers
123 views

Before the invention of Classless Inter-Domain Routing (CIDR) did hosts have subnet masks assigned?

Before the invention of CIDR, did hosts also have a subnet mask assigned or only have an IP address and the network was determined by the class of the IP address?
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1answer
250 views

How do protocols like PPTP, L2TP work below IP level

I have been using these protocols without deep understand how everything works under the hood. I understand a process of tunneling as follows When we are using protocols like OpenVPN, IPSec, SSH ...