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Questions tagged [isp]

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

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0answers
27 views

How to do UDP hole punching when my ISP blocks port redirections [closed]

My ISP blocks me from opening my router ports. If I try to open even high number ports like 60000 they are unreachable from outside. I need my server on mydomain.com to establish an Open VPN ...
1
vote
1answer
21 views

how to setup 2 routers (no bridge) with DDNS [closed]

My current network setup (which works): A) ISP-provided modem/router (Main): Fiberhome HG180 VDSL w/ voip Notes: 2 RJ11 ports (1 for DSL and 1 for landline phone) 4 lan ports and NO wan port ...
0
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0answers
21 views

Building reliable internet speed test tools

I'm interested in building a command-line speed test tool similar to the one used here. I started using it in a cron job to automatically check and record speeds at different times when we started ...
0
votes
2answers
58 views

Access two ISP at once for failover

Assumptions: Office locale with a dedicated leased line is literally a factor of 50x more expensive than broadband. I know nothing of office networking, but will hire appropriately if this is ...
0
votes
0answers
22 views

Fetchmail / Postfix SASL Authentication Failed: No mechanism available to relayhost

I have read through the similar questions, but I think that they do not address the problem I have, which is with postfix acting as a client to a SMTP server. My system uses fetchmail to retrieve ...
2
votes
2answers
69 views

DNS forwarding or root hints

The author of Best practices for DNS forwarding [petri.com] recommends using the ISP's DNS servers as forwarders instead of doing the recursive lookups yourself, the main reason being performance. ...
0
votes
2answers
33 views

PTR record only visible on two public name servers

I submitted a request to an ISP (CableOne) to have a PTR record created.. 160.2.202.58 mail.huntleylaw.com I've queried 30+ Public DNS servers and I've only been able to find the PTR record on two.....
0
votes
0answers
36 views

Realise Mixed CDNs

I have seen "mixed CDNs" in some threads, which are not completely clear. For my website (hosted by a server in Alibaba China), I'm trying to use Alibaba CDN for visits from China and another oversee ...
-1
votes
3answers
157 views

ISP gave me 3 ppoe accounts for 3 dedicated IPs, what router do I need?

I made an optic fiber ISP contract that included 1 dedicated IP addresses and 2 additional dedicated IP addresses, now when they gave me the 3 IPs I see I have actually 3 different ppoe accounts. Is ...
-1
votes
1answer
19 views

site is not accessable on single ip

OUR SIDE: The website is hosted by WordPress on DreamHost server. There are not any filters in WordPress and I can't see any IP blocks on Dreamhost server. CLIENT SIDE: Client has a single internet ...
0
votes
1answer
61 views

When an ISP is DDoSed, will its NOC have Internet access?

When an ISP is hit by a huge DDoS attack and its data plane is severely congested, will its Network Operations Center (NOC) have alternative Internet access? I'm curious what would be the industry ...
0
votes
2answers
39 views

Why does my network traffic appear to not go through what my router calls my “WAN default gateway”? [closed]

Bear with me a bit as I might be completely misunderstanding something. I'm a very-early-in-education networking student and at the moment I'm tinkering with my router settings while studying. I ...
0
votes
1answer
87 views

Putting ISP public IPs on two different firewalls

Trying to figure out if I need a router or switch for this. Nothing is yet configured, and I can still order equipment. I have incoming: Two internet connections. One (ISP-1) of which has given us a ...
1
vote
3answers
734 views

IPv6 - How does my ISP know how to route traffic to my delegated subnet?

My question is somewhat related to this question: What ISP needs to provide in order to route native IPv6 /56 range to several VLANs Where that question focused on the private side of a router, my ...
5
votes
4answers
840 views

DDoS block source IP at ISP

During a DDoS attack even when you successfully stop it at your datacenter the link between you and your ISP will still be saturated and traffic brought to a halt. In this case what is the best way ...
-4
votes
1answer
441 views

How to find ip pool of my isp? [closed]

I could eventually get all ips my isp is using by restarting my router and writing down the ips I get but that's very time consuming, so is there any way to get ip pool of my isp?
5
votes
1answer
773 views

Carrier Grade NAT concepts: IP bans

I'd like to deploy a Wireless WAN using IPV6 for at least the wireless bits given that 6 offers higher through-put. I'm exploring the concept of CGN and what strikes me immediately is the liability. ...
-1
votes
2answers
75 views

Changing nameservers when our ISP is our current nameserver

We are looking into changing our name servers. Currently, Our nameservers point to our ISP. They handle all of our public DNS Entries. I am under the understanding that in order to experience minimal ...
1
vote
0answers
62 views

Server won't return some requests to single ISP

I have a Linode server that won't return random GET requests to my usual ISP (but never gets stuck with the same one each time). If I switch ISP or use Opera VPN, all works well. Linode says all ...
0
votes
1answer
57 views

How do I allow access to a web server on an ISP that shares one IP address among all customers?

I'm a customer of a wireless ISP that shares one WAN IP address among all customers. If any of the ISP's clients log on to whatismyip.com, they will see the exact same IP address, which will look ...
1
vote
1answer
125 views

Why IPs from the Private Address Space would be reachable through public network, and what customers can do about it?

Scenario: I have a customer running a Win7 Pro and an OpenVPN client; this workstation is used from one of their employees to send remote cmds to the (Windows) OpenVPN server, both using psexec and ...
0
votes
1answer
173 views

DNS changes not propagating after over a month and two changes for one specific Central American ISP

I volunteered at an event last month that helps non-profit organizations get some attention for their web needs. My organization needed new hosting. I spun up an AWS EC2 instance, we installed Apache,...
27
votes
10answers
7k views

How can I buy end-user bandwidth for my customers? [closed]

I sell a product to customers, and as part of this product I have a website where customers can upload data for processing. The data is of considerable size (gigabytes). I am looking to buy extra ...
-2
votes
6answers
81 views

Share same IP with two Service providers

I own a GPS vehicle tracking device company. The GPS devices are installed on the vehicles and it can be tracked anywhere in the world. All the GPS device has one server IP in them for tracking the ...
0
votes
1answer
521 views

Port forwarding on local network

My router is forwarding both ports 80 & 443 to my Linux (Ubuntu 16) box...and everything works great. To access my Linux box from my laptop (Windows 7) I only have to type in my public IP address ...
0
votes
1answer
174 views

Cisco 1811w + dual wan failover on DHCP ISP

Ok so my setup is, I have 2 vlans currently routing through fa0 on cable internet with DHCP. I want to be able to plug dsl, also dhcp, into fa1 and have it work as an auto failover if fa0 goes down. I ...
0
votes
1answer
2k views

What is the purpose of multiple ethernet ports on my modem? [closed]

I have a static IP and I wanted to set up another one. After calling up my ISP and getting another static address, I tried to plug a second router into my NetVanta 838T modem, but could not connect to ...
0
votes
1answer
148 views

Change ISP (with new IP Block) and DNS Servers without Downtime

We are transitioning from our current ISP to a new ISP and have a new block of IPs to utilize going forward. We host our own DNS servers internally and two of those new IPs will point to them upon ...
1
vote
2answers
330 views

Getting the ISP for sending a DMCA Takedown Notice from IP address or domain name

There is this site which is cloning our project "pixabay.com" in basically everything: contents, layout, etc. We would like to send a DMCA Takedown Notice to their ISP. However, when looking up the ...
0
votes
1answer
824 views

Can't connect to specific IP address and/or TCP port - can the ISP be blocking it?

I have a RDP user who has successfully been using RDP from his laptop to his workstation in our office when he is at home. It is configured to use our public IP and port 10378 and has been working ...
1
vote
1answer
56 views

Cisco ASA as ISP GW in small office

I have Cisco ASA forming static route relationship with a ISP router. I'm not looking to use any fancy Anyconnect VPN or IPS Firewall. But some simple ACLs to secure the network as security tone. ...
0
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0answers
165 views

DHCP from ISP on cisco router

I have new internet service provider in my small company. I've got WAN IP from DHCP service but ISP gives me always same IP address. They've set lease time for 24 hours. My router is cisco rv042 for ...
0
votes
1answer
219 views

Debug ISP connection issue (Pfsense bogon network list out-of-date)

I have access to the office from outside (VPN, e-mail, etc.). I have at home Internet from ISP(A) and at office from ISP(B). Everything were working fine till I received an e-mail from my ISP(A) that ...
1
vote
2answers
161 views

ISP is DNS Hijacking. Updated DNS to Google OpenDNS, but still hijacked [closed]

I'm visiting India, and saw that their main provider, Airtel, limits the entirety of the internet to just a small handful of websites festooned with their own advertisements, and annoying redirects. ...
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votes
1answer
616 views

How to set up a network connection with 2 ISP,s 2 Routers and 1 switch

I want to use 2 ISP providers at the same time, to avoid downtime. Here's a diagram of what I want to do: What settings should I use for the routers and can I force PCs to use ISP#1 when online and ...
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votes
1answer
83 views

VPN and data transfer [closed]

I connect from my home computer to our company VPN. Then I login via ssh, from my desktop, to our company server which is actually a Google cloud machine. From the command prompt on that server, I ...
0
votes
0answers
61 views

Gradual throttling total bandwidth

I have a server with a 30TB traffic allowance hosting (mostly) history images and would like to throttle one particular directory (the download image sizes) when necessary to avoid going over the ...
0
votes
1answer
157 views

Old file is being downloaded from web server when browsing from client

I am facing a new strange problem while downloading files from web server. I am using windows server 2012. I will explain the problem with example. I have a text file (update.txt) in my server, to ...
-2
votes
2answers
87 views

In ISP network when assign my own Static IP to Network adapter Why I am not able to ping even nearest router [closed]

My ISP uses pppoe to authenticate and allocate ip to my machine but when assign my own Static IP to Network adapter Why I am disconnected from network or not able to ping even nearest router What ...
0
votes
0answers
257 views

HTTP webserver gateway timeout 504 only from one ISP

I have configured a nginx http webserver to serve a site on CentOS 6 Virtual machine. every things are works fine but when I connect to site from a special ISP, the site wait and after a while respond ...
6
votes
5answers
724 views

Adding second firewall to ISP connection with multiple subnets?

My routing knowledge is a little rusty. I have a fibre internet connection hooked up like this: The managed switch breaks out VLANS for transparent lan service that is also through the ISP's box. I ...
1
vote
0answers
81 views

ISP provides 400MB connection but behind iptables firewall I only get about 150MB

I have COX communications as my ISP and I have a 400 MB connection at work. I have had for years an iptables firewall I setup that runs great. CPU Info Intel® Core™ i5-2400 Processor (6M Cache, 3.10 ...
5
votes
1answer
119 views

Are caching proxy servers still be helpful for saving bandwith, now that major services have migrated to https?

I live in Turkey and am part of a group planning to build a WiFi-based ISP to service my home town, as we believe it will be easier to connect all the sub-villages that are not close to our town ...
1
vote
1answer
169 views

Traceroute and BGP peering

Doing a traceroute for example: 1: 1ms 1ms 1ms 1.1.1.1 2: 2ms 2ms 2ms 2.2.2.2 3: 5ms 5ms 5ms 3.3.3.3 4: 9ms 9ms 9ms 4.4.4.4 My question is: If the AS number of 2.2.2.2 and 3.3.3.3 are not ...
1
vote
1answer
445 views

Can DNS response answers be in a different case than the query?

Example (1) of an expected DNS lookup result: nslookup google.com Server: 192.168.1.1 Address: 192.168.1.1#53 Non-authoritative answer: Name: google.com Address: 173.194.123.41 Name: google.com ...
4
votes
1answer
189 views

Does the SOA serial have importance when it comes to ISP caching nameservers?

Lets say I forget to update the SOA serial when updating the zonefile. Of course, this means any slaves will not sync to the master because it thinks no change has been done. The question I have, is, ...
-4
votes
1answer
570 views

how to make server visible from internet [closed]

I have ADSL router with Static IP from my Internet provider. I know that, if I connect my server to router it can be visible from internet (working webserver etc.), but how does clients getting page ...
16
votes
6answers
6k views

How does an ISP block my website with a warning message [closed]

I have searched about this topic on Google but mostly I got the result how to unblock website blocked by ISPs. So, I have a website that is being blocked from viewing by audiences and when I go to my ...
0
votes
1answer
73 views

Routing set of users/devices through a specific WAN with a Dual WAN router

I have two internet connections and I want certain devices/users to always to go through the specific connection while the others would be able to use either WAN in a typical load balancing setup. The ...
0
votes
1answer
237 views

Monowall can't connect via Cisco DPC3941B Modem/Router

We have a monowall router behind DPC3941B, having trouble connecting to internet. Just purchased static IP and still can't get it to work. Comcast says everything looks good on their side. Modem is in ...