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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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Flat ISP network to MPLS dumb Q

I have a fairly flat ISP network that I am upgrading to use MPLS (dont ask why, that decision is above my position) but clients/CPE are authenticated using PPPoE. Each POP uses a router configured as an LAC with a L2TP-tunnel to a LNS stack. Client…
Random-IT
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nslookup requests time out regardless of server - ping is fine

I've been having intermittent internet connection issues for a week or so now. I now suspect that these are just DNS issues rather than connection issues. At the moment I can ping google.co.uk no problem at all (173.194.41.159) but I can't use…
Roaders
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How to best redirect customers to a login page? (ISP)

I'm trying to come up with the cleanest way to redirect a user to a logon/payment page from an ISP gateway router. We run a small ISP and would like to force users to have to log in prior to getting onto the internet after connecting. I've seen…
justin0
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configuring dedicated internet access

I have taken a dedicated internet access service from my ISP. for which i received one P2P IP address with a specified gateway, and 6 IP addresses on a /29 subnet. but they havent specified any gateway for these 6 addresses. Further, they say that…
Bahrain Admin
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Modems unable to acquire dhcp IPs

I work at an ISP where we use routers (7200) for dhcp. I recently reloaded one of our dhcp routers because we had complaints from many users unable to connect and the dhcp database file it was running on seemed corrupted (size was much less than…
Ugorji Nnanna
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can't ssh server from another country

I am in holiday in another country and trying to ssh on a server from my home country. I think the ISP here blocked that IP/class for various reasons. Is there a way I can bypass this ? I can ssh on any other machine without any problems (well, not…
hyperboreean
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Mail bouncing back

I am getting a lot of mail bounced back mails. The bounced message says: We cannot accept email from IP 213.42.234.186 without a DNS PTR record. Contact your ISP/HSP to set up a PTR record for your server. I have verified that our mail server…
user170765
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Fail-over VPN with two ISPs and Cisco ASA 5500 Series

We have a couple of branch offices that need to connect to a main site. We plan to use Cisco ASAs 5515 to establish VPN connections. We would also like to have 2 ISPs at each location to make the connection redundant. Here is the image: I am a bit…
Alec T
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Input Packet Drops

Currently, my Cisco 2600 router running CIOS 12.1 is experiencing packet drops on the interface that connects to the ISP. #show int fa0/0 FastEthernet0/0 is up, line protocol is up MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec, reliability 255/255,…
Charlie Sierra
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Server is pingable on some ips but not on others

We have comcast business class internet with 5 static IPs. 4 out of 5 of them are assigned to a server that sits right behind the smc. The smc has DHCP disabled so it should be in pass through mode. Everything was working fine this morning, but…
Adam Schiavone
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Slow website from one connection

One of the websites is very slow on response from one particular connection. The trace route seems to be alright (total is ~110ms) but all pages of the site take much time to load. It works properly from few other connections. What can be causing…
Aram Boyajyan
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Several border firewalls in the same network

I'm currently analyzing the consequences of multipath connections for the firewalls. In that context, I'm wondering if it's really uncommon to have several firewalls at the borders of a network to protect it. The typical case I'd imagine would be a…
nimai
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IPSec VPN using ZyWALL IPSec VPN Client: unable to connect from some providers

I'm trying to configure an IPSec VPN to one company from my home. The company has SANET internet service provider. I was able to create a VPN connection from another company that has the same internet service provider. The problem begins when I'm…
Reshi
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ISP Redundancy Hardware

I've tested Microsoft TMG 2010 to load balance my two DSL lines and it works fine. Can I expect the same level of results and security to be achieved with a less expensive firewall appliance?
jvanderh
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Does SSL encrypt the IP

I am building a personal server. I want to be able to access this server from anywhere, and I don't want this server to get blocked. It is my understanding that HTTPS encrypts my traffic, but I also heard that it doesn't completely encrypt it. I…
jamescostian
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