48
votes
How can I buy end-user bandwidth for my customers?
For all intents and purposes, no, this is not possible. Even if it were, the technical and contractual logistics required would cripple your business.
Think through this a bit more: Joe user at ...
- 109k
28
votes
How can I buy end-user bandwidth for my customers?
Depending on the frequency at which you exchange data with the customer, it could be cheaper, faster, and more efficient to mail them a storage drive, then pay to have it overnighted back to you when ...
- 925
27
votes
How is possible that the web site is down but the traceroute is ok?
The website runs on a server process. When you shut down the server process, the server does not magically turn off. Also not when you misconfigure your firewall (and block port 80) neither does the ...
- 51.4k
21
votes
Accepted
A few websites are not reachable using Linux gateway
The netmask is wrong on the enp4s1 (WAN) interface.
This system has configured an IP address of 49.x.x.x and a netmask of 255.0.0.0 (prefix /8). But this is not the netmask that your ISP gave you.
...
- 241k
21
votes
Why the discrepancy between Speedtest and Wget?
ISPs often prioritize traffic to speedtest.net so that they can brag how fast their connections are, while in reality, they don't provide that much bandwidth. They're perfectly aware that most users ...
- 880
17
votes
Accepted
How can I buy end-user bandwidth for my customers?
It sounds like in effect you want to pay a users ISP to zero-rate traffic to your site, similar how to some cell carriers allow you to stream video from certain websites without impacting your ...
- 4,963
17
votes
Accepted
Why the discrepancy between Speedtest and Wget?
In addition to the other reasons posted, TCP connections don't work well with large files when the bandwidth-delay product becomes large.
Like on an otherwise fast connection to an island.
See ...
- 1,262
14
votes
What happens in the real world Internet - BGP and OSPF?
Typically, autonomous systems (ASNs) use an IGP (which can be OSPF, IS-IS or iBGP) so routers in their network know how to reach eachother. Networks connected to these routers and reachable through ...
- 1,837
14
votes
Carrier Grade NAT concepts: IP bans
That is indeed one of the problems with CGN. Sharing a resource means that all suffer the consequences when one abuses the resource.
A bank that I consulted for implemented IPv6 on the server side ...
- 7,672
12
votes
How to Bond Two (Multiple) Internet Connections for Increased Speed and Failover
This solution applies Linux Ethernet Bonding to two independent OpenVPN connections from a local gateway server to a server in the cloud that you have root access to, like a Linode or a DigitalOcean ...
- 346
11
votes
Accepted
"RTNETLINK answers: File exists" /etc/network/interfaces Does'nt contain 2 gateways, so what's wrong?
Edit your configuration file to remove the spaces before the iface stanza so that it looks like this,
auto eth0
iface eth0 inet static
address 192.168.1.57
netmask 255.255.255.0
gateway 192....
- 4,629
11
votes
Domain will not propagate (Over 96+ Hours)
I'm basically parroting Michael here, but this is too much to paste into a comment:
;sai.ngo. IN A
ngo. 172800 IN NS b0.nic.ngo.
ngo. ...
- 32.2k
10
votes
How is possible that the web site is down but the traceroute is ok?
Traceroute uses ICMP protocol to reach an address, and a HTTP server use HTTP protocol, different ports, and different approaches.
I can reach an address via ICMP echo request but, if the port I'm ...
10
votes
Which ICMP types (v4/v6) should not be blocked?
All of ICMP should not be blocked. Not by default, this can be a deny list rather than an allow list.
Start by rate limiting, but not otherwise filtering, ICMP.
Read RFC 4890 section 3 on the ...
- 31.1k
9
votes
Accepted
MTR Report Analysis
20 seconds latency on any network would be a performance disaster for any kind of interactive work, if you had it. But you don't.
You experience high latency (and packet losses) in getting ...
- 79.2k
7
votes
centos VM unable to access the internet from hyper-V network
I had no internet connection on a fresh Centos 7 install. In my case it was because eth0 was down.
Check the status of your devices with
nmcli device
If the ethernet device (usually eth0) is "...
- 171
7
votes
How can I buy end-user bandwidth for my customers?
TLDR:
No it is not possible because it is likely to be illegal in the country you are operating in. The proviso of course being that if you are in the US, the FCC/Trump are currently in the process ...
- 208
7
votes
Why the discrepancy between Speedtest and Wget?
wget give good practical measure of the speed. The tests of Speedtest probably include kind of parallelism which can explain higher numbers.
For good average speed test I think the time for download ...
- 4,302
6
votes
How do captive portal network connections work?
First for achieving the redirection, you need an inline authenticator (access controller).
In context of your topic, you will need a Wireless lan controller if you opt for central management of AP. ...
- 615
6
votes
Accepted
Should Server Internet Connection be based solely on Internet Speed?
I can't imagine why an ISP might suggest that, but they clearly have no idea what they are talking about.
A T1 has, and has always had, 1.544Mbps symmetric bandwidth. The usable bandwidth is ...
- 25.1k
6
votes
"RTNETLINK answers: File exists" /etc/network/interfaces Does'nt contain 2 gateways, so what's wrong?
I just ran into this problem and none of the solutions above worked for me. I couldn't change /run/network/ifstate because it was reset immediately to the former state. Also sudo ifdown eth0 &&...
- 1,124
6
votes
Accepted
What is the best default-gateway for IPv6
Would it be better to only route 2000::/3 to the ISP as opposed to all assigning a default route.
No. While Informational RFC 3587 is not a standard, it offers the following advice:
RFC 2374 was ...
- 32.2k
6
votes
Accepted
How to responsibly discontinue receiving email at an old Internet domain?
As is noted already in the question, there is a conflict between the desire of not accepting incoming email and the idea of being able to contact the domain owner via email by convention-based email ...
- 34.4k
5
votes
How do captive portal network connections work?
There is a great description of this at https://www.arubanetworks.com/vrd/GuestAccessAppNote/wwhelp/wwhimpl/js/html/wwhelp.htm.
Here's part of it:
Captive Portal Authentication Process
...
- 153
5
votes
Accepted
How is possible that the web site is down but the traceroute is ok?
What Is a Virtual-Host?
Some web-servers, like Apache, can be configured to use what's called virtual-hosting; essentially a local redirection service. In essence, it works like this: the web server(...
5
votes
How can I buy end-user bandwidth for my customers?
Couple of points:
Couple of GBs is not that large these days. Most universities are on a very good bandwidth connection anyways. I knew our Physics Dept. (Wisconsin, USA) worked on the ATLAS / LHC ...
- 359
5
votes
How can I buy end-user bandwidth for my customers?
If you think you'll have sufficient traffic (think at a minimum several PBs worth month reasonably sustained), you could look at a "private peering" solution with their ISP (so traffic would go from ...
- 213
5
votes
How widely deployed is carrier grade NAT?
My experience in the UK:
Pretty much all mobile networks have been running "CGN" for years. EE (our largest mobile network) is now starting to deploy (AIUI it's postpaid only at the moment) IPv6 only ...
- 4,106
5
votes
Accepted
How to determine whether an internet connection is wired or wireless?
Do not use MAC address for security or authentication purposes. Those addresses can be trivially changed.
Instead, implement a (or use your existing) network access control solution. These use some ...
- 31.1k
4
votes
How to throttle your own internet connection?
If you are using google chrome or chrome based browser right click anywhere in the page and click inspect element or (Control + Shift + I) if on windows, the click the "network" tab, change the no ...
- 141
Only top scored, non community-wiki answers of a minimum length are eligible