The Internet is a global system of interconnected computer networks that use the standard Internet protocol suite (often called TCP/IP, although not all protocols use TCP) to serve billions of users worldwide. It is a network of networks that consists of millions of private, public, academic, ...

learn more… | top users | synonyms

0
votes
1answer
2k views

Hyper-V VM guest can't ping any machine

So I got Host: Hyper-v enabled machine with four NICs, only one enabled. Network type: External IP configuration are correct for both host and guest (getting it from the DHCP of the company network) ...
0
votes
2answers
411 views

How to authenticate to web based firewall?

I'm new to ubuntu server and I'm trying to figure this out. I have a server install of ubuntu 12.04 behind a fortigate firewall. To get internet access I have to authenticate with the the fortigate ...
4
votes
3answers
504 views

Load balancing with Cisco router

I have a Cisco router with two bonded T1's which are setup as a VPN to the main office. We need more bandwidth but can't get other connections (or it's too costly), so I would like to have a dsl ...
0
votes
1answer
279 views

Provide Internet access for different VLAN

I have several managed switches at work that connect all computer within our office to the ADSL modem. However I would like enforce a VLAN policy to isolate traffic within the network. Through my ...
1
vote
1answer
162 views

Slow internet connection for no reason

We have a cable internet connection. I've called the company when this happens and they say there's been no downtime on the modem and the signal is strong and there's no fixing or outages in the area. ...
1
vote
0answers
35 views

What could cause a group of machines to fail loading secure web pages only when assigned certain IP addresses?

I have about 20 cloned machines running Windows XP Pro SP3. Three of the computers are experiencing an issue where clicking the 'Proceed to checkout' button from the amazon.com shopping cart causes ...
0
votes
1answer
368 views

ping OK, nslookup OK, wget locally OK, remote HTTP false

I'm trying to access http://domain.com/test.html from internet, but getting error Server is running CentOS I'm using DSN hosting (yandex.ru) for domain.com Ping server by ip = OK Ping server by ...
2
votes
0answers
47 views

How normal are remote connection faults and what do they mean? [closed]

Quick background: I have been having a lot of connection issues with my home network. I finally got my ISP to understand and after them checking some of the problems outside of my home I've gone from ...
4
votes
5answers
3k views

Mounting a file system over the internet

I built a web application that runs on a virtual server for one of my customers. It includes the facility for them to upload files, but they now want to store those files on a server in their office. ...
5
votes
4answers
3k views

What's so special about leased lines (T1, DS3, etc)

I understand the theory of having "dedicated bandwidth" but why would a small/medium business purchase a leased line for access to the internet? In today's day and age residential grade connections ...
1
vote
1answer
63 views

Tool for creating networks configuration on real machines or VM ? simulating internet networking [closed]

I'm looking for a tool that can simulate and create networks with different machines , kind of intranet , tool for creating networks configuration on real or VM ? Thanks
1
vote
2answers
2k views

why i cannot start new ssh connections to remote server?

this question is not the same as others, who asked for that they cannot connect to server, the issue i have is that i cannot start more new ssh connections... now i am connected to remote server ...
0
votes
1answer
211 views

Ubuntu Server 12.04 configured for two seperate networks

I am trying to configure my fresh install of Ubuntu Server 12.04 to act as a entry point for two of my networks (the machine has 3 ethernet cards). The basic setup I am looking to achieve is to ...
-1
votes
3answers
203 views

How to become an ISP [closed]

well cutting to the point... I want to be able to provide internet to rural areas of my country so they can too gain acces to internet for free. I was wondering what I need to start small, like ...
1
vote
1answer
81 views

Rsync through the internet

I'm looking for a way to copy files from production server to DRP server via internet. The two servers are in different states. For now, there isn't a lot of data to transfer but I suspect it might go ...
-2
votes
2answers
142 views

Bandwidth and Speed monitoring software [closed]

I am looking to get some advice on what you guys think would be a good fit for my requirements. My goal is to find software which would monitor internet speed (UP/DOWN), ping times and more(possibly) ...
1
vote
2answers
166 views

Wireless connectivity for small technical conference?

Can anyone offer any advice for setting up a wireless network for a small technical conference? (Perhaps ~ 100 attendees, for 1-3 days.) I've read the resources on this site. For instance, I've ...
4
votes
3answers
932 views

How do I diagnose network corruption on an Internet path?

I run a few hosts on network A that make requests to servers (which I don't own) on network B, somewhere across the Internet. Unfortunately, many of these requests get corrupted. If I make the ...
4
votes
3answers
12k views

Windows 8 - no internet connetction to some hosts while VPN is active

I use VPN to access the servers at work. When VPN is used, all network traffic to the Internet passes through my company network. It worked without any problems on Windows 7, now on Windows 8 some ...
10
votes
2answers
282 views

DNSChanger Malware / Rogue DNS - “Internet Doomsday” July 9

Back in late 2011 the FBI dismantled a large and sophisticated internet fraud ring behind the DNSChanger virus/malware. Part of this malware involved directing victim's DNS requests to rogue servers ...
6
votes
7answers
1k views

Troubleshooting Website problems within the local network

Have an external website which opens fine on some PC's, yet seems to time out (or symptoms of timing out, but never actually does) on others. Seems to only affect (some) of our newer HP Pro 3305 MT ...
0
votes
1answer
115 views

Monitoring Maximum Process Network Activity

We have a collocated server on which we run some OpenVZ hosts. Recently, we have had to pay a lot extra we keep exceeding our bandwidth quota. Our quota is 5 Mb/s but we have spike to almost 50. I ...
0
votes
1answer
781 views

One Windows Domain workstation can ping gateway but gets no internet access

One of the (Windows XP SP3) workstations of our Windows Domain could not access internet anymore, this problem suddenly happened overnight. The domain controllers (there are three of them) are all ...
1
vote
4answers
5k views

How to throttle your own internet connection?

I am writing a website and want to test it's speed on slower internet connections. I have the unfortunate first world problem of downloading at 100mbps, how can I throttle my own computer's internet ...
0
votes
2answers
1k views

PCs with Wired Connection Keep Losing Internet Connectivity

I have a U-verse ATT DSL Internet at our church building. Recently, any computer that is plugged into the network via Ethernet keeps losing its internet connectivity. The setup is from the Modem to a ...
1
vote
1answer
155 views

LAN full of public ipv4 addresses - How to filter it?

The answer to my question maybe is not that hard but anyways, I do not know what to do. So, I just got in a new job in a Univerisity and I found out that the network (the LAN) is full of public IP ...
1
vote
2answers
440 views

How can I use a backup internet circuit for incoming services/applications?

Current: Primary ISP - fiber Backup ISP - DSL We have various apps/services like VPN, email, etc. that come in on various external IPs on the primary ISP. Is there a way without BGP peering to ...
1
vote
1answer
77 views

Internet Sharing solution

I have a client that is a business. The people at this business are not in anyway computer savvy. I was asked to make a file server for them. This server will need to have four shares with a ...
1
vote
2answers
104 views

Redmine without e-mail functionality

I want to install Redmine on an air-gapped network. It has no connection to the internet or any other network. As it doesn't need an e-mail server, it doesn't have that either. My question is, can ...
2
votes
2answers
59 views

Can I use address space from one Internet Registry in the region of another?

Is it possible for me to, for example, purchase address space from APNIC and then use those addresses in Europe or the United States? Would there be a cost or paperwork involved? Thank you.
4
votes
2answers
201 views

Fiber vs. 2 separate business-class cable

We're completing renovation of our new office and need to make a decision on internet access. Our office will contain ~20 employees at the start and we may grow to ~40 in a few years. We have VOIP ...
-1
votes
1answer
379 views

Getting internet access from remote host through VPN like you are a VPN's LAN client

On my server(CentOS 6.2), I have installed CoovaChilli* software. Bellow, I will present what I need to do, and put my questions: My LAN that is managed by server is 10.1.0.0. The Internet IP address ...
0
votes
1answer
116 views

ARP issues across MAN

We have a large area MAN provided by a local cable company. Each location has a cable modem that connects directly back to a central location, i.e. it doesn't cross the internet, it is a private ...
1
vote
4answers
177 views

Acceptable use policy / computer use policy / network use policy - why are they needed?

I've always posted a(n) acceptable/computer/network use policy for employees using a network/computer or from users coming in from the outside to use public access points or public computers. Private ...
3
votes
2answers
287 views

Is it just me or is my node down?

I find the www.doj.me very useful. I am looking for something like that but specifically for BGP Nodes. I want to write a script that tells the users if our Internet backbone is down, if if yes which ...
-1
votes
1answer
510 views

Server can't connect to the internet

I have a headless file server running debian that just stopped connecting to the internet. Console output: Dmesg: [ 84.248344] ADDRCONF(NETDEV_UP): eth0: link is not ready [ 85.941389] svc: ...
9
votes
1answer
18k views

What exactly is the MTU/MRU issue, what it is caused by and how to fix it?

In cases of hanging, freezing, slow, unresponsive internet connections the cause is usually unreasonably identified as "MTU/MRU issue" with several hastily proposed "magic cures" (usually invalid or ...
1
vote
2answers
122 views

Root DNS Servers

I understand the root DNS servers (A to M). What I don't exactly get it is the difference between, let's say the "F Root DNS" and the "A Root DNS". Why is there 49 total "F" DNS's and only "A" DNS's? ...
1
vote
2answers
119 views

Can an internet connection be more robust when connecting through a VPN?

During live streams some viewers experiencing problems with the stream like dropouts and artifacts although they have a 100MBit line what makes me assume the problems are caused by packet loss. ...
0
votes
2answers
997 views

Use number of downloaded file in wget as variable in bash script

Can I get the number of downloaded files with wget -r and use that as a variable? I want to write a script that runs multiple wget commands in it (using -q so i can control output) and then at the ...
5
votes
3answers
19k views

How can I find out which server OS a particular site is running?

Is there a way to check which server OS a particular site is running. For example from linux command line. Maybe via telnet? But all I can get from "telnet www.google.com http" is: Trying ...
0
votes
2answers
6k views

Internet traffic when connected to a SonicWALL VPN

We have a new VPN to let all users connect to the company's applications through it (inside the company net). We have a lot of users using the SonicWALL Client and we want to allow them use Internet. ...
1
vote
1answer
333 views

display internet usage agreement before users can use internet

I was looking for a way to display a usage agreement page in browsers that users must agree to before they are allowed to access the internet. This would be for users on public computers and ...
0
votes
1answer
65 views

Port Mapping in Windows Server

I have Windows Server 2003 and in WS virtual machine with Ubuntu server. Network: On host I have eth0 with real IP, virtual eth (192.168.0.1 - virtualbox interface), it's working in bridge mode with ...
1
vote
2answers
1k views

Proxy Settings per Machine not working on windows server 2008 R2 SP1

i have a very interesting problem and would appreciate any help for it. In my scenario i have scripts which bring up a VM inside a domain. Now i want to enable internet access for all the VM's and ...
5
votes
1answer
3k views

How do captive portal network connections work?

Internet access at hotels, airports cafes is often gated by a captive portal which forces you to a particular web page on first use, for example a payment page or some page to accept a terms of ...
4
votes
2answers
3k views

New Fiber Optic Internet Connection, want to use Sonicwall TZ200 as main router, WAN/VLAN

Key Facts: We have a new internet connection with Movistar. It is a 100/10 Mbit line. We want to use the TZ200 as our main router. The Fiber Optic router is a ONT I240 The internet router that ...
0
votes
1answer
158 views

Bridging DSL wifi router to a PacketCable modem [closed]

I used to use a DSL based Internet connection (an AirLive WT-2000ARM). Recently I changed my Internet connection and it is now provided through PacketCable. The provider gave a modem for it (Thomson ...
4
votes
2answers
536 views

How to find the lowest latency midpoint between two geographic locations?

I'm looking for a geographic location (not service) to host internet services that will give me the lowest latency on connections from two other locations. How would I best determine the most ideal ...
-1
votes
1answer
225 views

not reachable from within my own network through outside facing interface

Is there any quick answer that lapses me by to this situation - my server is accssible at 192.168.2.200:5222 without a problem (from within the local network of course) but if I try to reach it ...