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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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Best Firewall product for hosting/housing environment?

I am searching for a firewall product (appliance or software) for an hosting/housing environment. The biggest problem is that the rules get very complex as more customers are behind the firewall. Some have only one server, others have a whole…
Raffael Luthiger
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How to add a PTR (Reverse DNS) on Vultr? Do I need to contact them?

I have set up a Postfix Dovecot email server on my Vultr. And I'm getting following message from Google: gmail-smtp-in.l.google.com said: 550-5.7.1 Our system has detected that 550-5.7.1 this message does not meet IPv6 sending guidelines…
岁月倾城197
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How do I setup a public static IP in Ubuntu 9.10

I have an Ubuntu 9.10 server and I need to setup a static public IP. Our office already had a network setup by Cisco, so the router is configured to forward the requests to the server. Here is the information from the ISP: Static…
Phobis
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How fast does my ISP connection need to be to compete with a hosting provider?

This might seem like a ridiculous question, but mainly I'm wondering how can I test the difference in latency between the ISP we use in our office and the hosting provider we use (Rackspace in this case). Like what would be the difference in speed…
JP Silvashy
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Filter CGNAT IPs from Log

I want to identify heaavy users on a web API I would like to ignore CGNAT IPs . I looked at https://www.rfc-editor.org/rfc/rfc6598 Is this mandatory or can an ISP use any given IP ? Is there a List of IP Adresses used for CGNAT ? thanks
jan ohms
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Migration from IPv4 to IPv6 - stable internal service addresses

ISP provides 64 bit variable prefix to my home network using DHCP-PD. With IPv4 and NAT I could create stable (fixed subnet) internal network with DHCP, internal DNS and some static routes to subnets with services. In IPv6 world it gets more…
Mariusz Zieliński
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Unknown private IP addresses tried to log in to my router's admin panel

I noticed some weird traffic in my router's admin panel logs: 2021-03-25 06:27:19 [Critical][Config-Log] Terminal:WEB(10.181.189.71),Result:Fail,Type:Login,Username:- 2021-03-25 06:27:22 [Critical][Config-Log]…
concerned
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Does an IPSEC tunnel establish new sessions for traffic?

Background AT&T business fiber is basically rebranded U-Verse home internet. The "modem" (it's actually a router, but lets call it that for simplicity) has a hard limit of about 8K sessions. Even with the modem in cascading router mode (similar to…
Kerry Hatcher
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dual ISP firewall cluster in linux

For the past couple of weeks i have been trying to figure out how to make firewall cluster, each having different ISP. I have found few guides on how to do it with one ISP using technologies like keepalived and conntrackd. For example this one. Is…
user573959
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Can my ISP detect what YouTube stream quality i play on my device

I would like to know if there is a way that my ISP can detect the youtube stream quality I use on my device. For Example- When I watch youtube video in 360p resolution and I move to the 1080p resolution. Can my ISP detect that quality from their…
Supun Abeyasekara
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VPN Tunneling through Multiple NAT environment

I currently building a DIY surveillance system based off of a QNAP NAS. The NAS will store the data, control the cameras, and act as a VPN Server for external access. I've managed to get all the the internal set-up functioning, but cannot access…
Jon Salpas
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Is it possible to use a DNS server as a proxy?

My mobile internet provider cuts my internet service at times before it was due, I contacted them and they did nothing about it I noticed I could still ping hostnames, thus I can connect to the dns server, can I somehow proxy my traffic through the…
user501769
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How to diagnose source of website blocking?

When accessing sites through my ISP, certain sites don't load. The DNS resolves fine (via nslookup; also, the hosts file is fine), but then accessing them through any port times out (eg. tracert or ping or ftp). After investigating which sites are…
Alex
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VNC ISPSystem glitches on high resolution

I am trying to perform an installation of Android x86 8.1 RC2 on VPS through the means of ISP panel, via VNC. Here is what I see in any VNC client (noVNC, VNC Viewer): Such a bug only appears after the initial installation, after the boot menu. It…
reardenlife
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Under volumetric DDoS can I prevent ISP null-routing by turning NIC off briefly?

A server in a data center is getting a volumetric DDoS attack. Congestion starts to build up and the data center/ISP going to solve this by null-routing (RTBH routing) the server's IP address for several hours. However the attacks are much sorter,…
diviaki
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