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Questions tagged [isp]

An Internet service provider (ISP) is an organization that provides access to the Internet.

An Internet service provider (ISP) is an organization that provides access to the Internet.

Internet service providers can be either community-owned and non-profit, or privately owned and for-profit.

Access ISPs directly connect clients to the Internet using copper wires, wireless or fiber-optic connections. Hosting ISPs lease server space for smaller businesses and other people (colocation). Transit ISPs provide large amounts of bandwidth for connecting hosting ISPs to access ISPs.

There are 3 tiers:

  • Tier 1: a tier 1 network is one that can reach every other network on the Internet without purchasing IP transit or paying settlements.
  • Tier 2: a tier that can access some part of the network without paying transit
  • Tier 3: only uses transit

Source wikipedia

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Bizarre Site Slowdown for Some Users with .htaccess Directive

To protect my website on a shared hosting plan, I added this to my .htaccess file: order deny,allow deny from .ru deny from .cn deny from .in deny from .de deny from .cz deny from .kp deny from .kr deny from .ng deny from .pk #…
ServerChecker
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Real-life experience of BT Wholesale Ethernet as a bandwidth option

We are currently moving office, and in the new location we have been offered BT's Wholesale Ethernet as an alternative to a traditional leased line. It seems to be full-duplex, symmetric, uncontended, with a similar SLA to a leased line, but comes…
Jon
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Need to configure Nortel SR1004 router for new Internet Connection

I'm trying to prep for a new fiber circuit that is being installed in our office and I'm having difficulty finding much documentation on the Nortel SR1004 router. The router currently is used for 3 bonded T1 connections that go out over the FE0 port…
Windows Ninja
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want to Request our ISp to do rdns/ ptr modify for my Staic IP ot point to my Domain?

we setup a mail server in our local office using Mdaemon Mail Server . We have a Staic ip 123.xxx.123.xxx ( as an example ) and all necessary ports (80 , 25 , 110 ) are made open . We have a domain abc.com which is not hosted anywhere planning…
panindra
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Cache Appliance for ISP

We want to invest in a Cache Appliance solution to reduce our bandwidth and improve the user experience. Which cache appliance do you recommend? So far I have these candidates CacheBOX and CacheMara. We want a full commercial product (that includes…
Andre
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Find the ip address of my modem from outside my network

I am out of town, and dyndns droped my account and deleted my ip address. I set up a new dyndns account, but I really need the ip address of my home modem. Is there any way for me to retrieve it? Shouldn't the ISP know that type of thing?
Jonathan Henson
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E-mail PTR failure - Spamcannibal

My IP is on Spamcannibal list. So I can't communicate with my registered partners. To be precise I can't send e-mail to only two domain. Everything else is ok. I try to talk with my domain/server hosting company, try to talk with the Spamcannibal…
Holian
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How do ISP's block ports?

I'm currently working on a small town in Argentina and the only ISP that gets here is called Arnet. The connection stability sucks, the help desk is anything but helpful (non techs hired for around 2 dollars/h) and I've had lots of problems wiht…
federico
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IPsec tunnel keep crashing

I have 2 locations. On each location is installed VPN device Cisco RV042. Link between location is optical fiber. ISP is the same. Link speed on location A is symetric 3/3 Mbps, and there is static address. Link speed on the location B is 10/10 Mbps…
peca
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Discrepancy between IPs in DNS and actual location address

I have inherited an environment where many things don't make sense and I am now in charge of making changes to it and for this I have to understand what the hell is going on before I modify. Long story short - there is an email server on the LAN and…
Manca Weeks
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ubuntu-server 2 network devices, 2 isp

Hello I have the following szenario: I have 2 ISPs behind seperate routers, and one web/ssh-server with 2 ethernet cards. I want the webserver to be reachable from both isp. I have forwarderd each router's port 80 to the local ip, but it seems that…
mightyuhu
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File download speed issue over a dedicated fibre link

My ISP has installed a fibre based dedicated internet connection at the place where I work. In the beginning the connection terminated at one of the ISP's core routers. It resulted in a strange issue. Eventhough the assigned speed was 5mbps, when…
nixnotwin
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Question about domain name server

I have set up a DNS server in my home, will I have to wait for the isp to refresh there cache before DNS is active? Some website I have found says this is called "DNS propagation time" and how long could this take?
Jonathan
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Reasonable assumption about an ISP's IP range

I have made a visitor tracking script for my demo server. I want to add a rule so that my own page hits are not recorded. But the problem is, I don't have a static IP. I have a DSL connection with dynamic IP. I thought I might be able to specify a…
Majid Fouladpour
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Disable (ISP) Caching - WAMP

I have a server that I use to send emails. The emails have an image, that is used to track their being opened, that is in the form of The script that serves up the…
Josh
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