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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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Is it worth sending abuse mail?

I have been running my own e-mail server for a while, and I noticed that scanning for open relays has been on the rise during the last days. So I whipped up a little script that parses postfix logs, isolates "hostile" IP addresses, finds the ISP…
Executifs
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New IP addressing from ISP

We just got a new Internet fiber service. Our ISP gave us a /30 for WAN and /29 for LAN? I have never seen this when setting up a new ISP service. I was always given a block of ip addresses (if needed) in the same range. So the WAN address gateway…
user202045
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Is a short DHCP lease from my ISP likely to cause problems?

I'm wondering if having a short DHCP lease is likely to cause any issues, such as: Dropped VoIP calls Dropped VPN connections If so, could you explain why?
Tobias Tromm
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How to disable Nginx web pages caching to avoid ISP cache?

My problem is simple. I did some changes on a homepage this morning (add some sentence) and it did not appear in my browser. I cleared symfony cache, nginx cache, apc cache, restart apache, restart nginx and... nothing. Then I tried to access it…
MaximeBernard
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Find ISP/IP address by geographic location?

I'm trying to find an ISP or IP address by geographic location, Is this possible?
Zee Tee
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Linux WAN failover simple solution needed

I'm banging my head against the wall to come up with a clever and simple solution to WAN failover. This is for a SOHO installation with two different external IPs. Only outbound connection failover needed. Provider 1: Cable Provider 2:…
Peter Meyer
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What sort of magic is my ISP doing?

While trying to setup OpenDNS, and failing to make website filtering actually work, I realized my ISP is doing something nefarious with all HTTP requests. To make a long story short, if there's a Host: header, it doesn't matter what IP address I…
imgx64
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ISP Point of Presence versus ISP data center and what effect it has on CDN server deployment

I would like to clarify my understanding of the difference between an ISP Point of Presence and an ISP data center. Perhaps more importantly, I'm trying to understand at what kind of granularity each is generally deployed, and what effect that has…
Bryce Thomas
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QoS configuration for a medium ISP

What is the best Linux-based QoS platform to implement a configuration where all 256Kbps DSL clients (all belong to the same IP range) get a guaranteed speed of 200Kbps with single QoS rule?
MZK
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Only able to use the first IP in a range from ISP

Right now I have a subnet of 16 IPs. I want all of the ips to be "owned " by my firewall. I have a watchguard firewall statically configured with X.X.X.225 and has X.X.X.226 - 238 as Secondary IPs. This has been working fine for a few months,…
BLAKE
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Number of routers in small community lock up and require reboot

I live in a small town which has one primary ISP. Lately I have noticed that a number of wireless routers have been locking up and requiring a reboot before allowing any connections. This has affected two of my routers, my work router, and a few…
Anthony Hiscox
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How do ISPs increase clients bandwidth?

I've always been wondering how do ISPs increase their users bandwidth. Do they actually change the client's modem configuration? or do they change an specific router conf? I got an email from them saying that I only needed to restart the modem to…
Josh
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(Tough) Security Queston about ISP companies

I want to ask a question. One ISP was criticized for it's low security conditions, and when i heard this i started to think: If one gets an unauthorized access to the mainframe computer / internal network of the ISP, then wouldn't he be able to…
buyrum
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WAN failover for local mail server

I have a question about possible failover solution for internet connection to local mail server in one small office where are problems with ISP. There is Kerio Control server with public static IP 1.1.1.1. There is also local mail server for…
user2014521
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Which hosting control panel to use?

At the moment I'm using http://www.ispman.net/ as hosting control panel for a few debian linux servers. What I really like about this product is that it supports multiple servers and uses ldap as directory server. The problem is that it doesn't…
yvess
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