Questions tagged [internet]
For questions about interconnected networks.
264
questions
0
votes
0answers
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 ...
0
votes
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 ...
0
votes
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 ...
1
vote
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 ...
1
vote
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 ...
0
votes
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, ...
0
votes
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 ...
0
votes
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 ...
1
vote
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 ...
0
votes
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 (...
1
vote
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?
1
vote
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 ...
0
votes
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 ...
0
votes
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/.
...
1
vote
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....
-1
votes
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 ...
0
votes
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 ...
2
votes
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 ...
-1
votes
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 ...
0
votes
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 ...
7
votes
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 ...
0
votes
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 ...
1
vote
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 ...
22
votes
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.
...
12
votes
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?
5
votes
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 ...
0
votes
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
votes
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 ...
0
votes
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 ...
1
vote
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 ...
1
vote
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
votes
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 ...
1
vote
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/...
6
votes
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 ...
1
vote
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
votes
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 ...
1
vote
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
votes
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 ...
1
vote
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 ...
-1
votes
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 ...
1
vote
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
votes
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 ...
1
vote
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
votes
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 ...
0
votes
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 ...
1
vote
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 ...
-2
votes
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 ?
6
votes
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
votes
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?
2
votes
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 ...
