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, ...

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1answer
307 views

Have access to internet but ping 4.2.2.4 results in 100% packet loss [closed]

I am running openSUSE 12.2 on my machine. When I try ping 4.2.2.4 in my konsole I get 100% packet loss, but I have access to internet. How can I fix this? I always thought if ping 4.2.2.4 doesn't ...
1
vote
1answer
118 views

Can not access tomcat's default page

I am quite new to Tomcat. I use win XP. I have installed Tomcat 7.0.3, started it. I have started a browser, go to localhost:8080 and I can see the congratulations page, saying that tomcat is ...
0
votes
1answer
209 views

Access device with local ip over internet

I apologize up front if this is the wrong place to post this question. It seemed like the best fit. I have a device which is connected to my local network which has an IP of 192.168.1.10 from my ...
1
vote
0answers
303 views

Conigure Linux server to do lawful interception

I have a server that makes the routing for my LAN (Linux, CentOS). I would like to have on it the possibility of lawful interception: I want to be able to see all network traffic that was done from my ...
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votes
1answer
74 views

how can I verify whether multiple ip addresses are hosting on same server? [closed]

Many hosting providers put multiple ip addresses on same physical machine. If I have two ip address, for example: 192.168.1.100 and 192.168.1.101. If I can only send probing packets from afar, how can ...
4
votes
1answer
164 views

Virtualisation for Public Library PCs with vSphere Hypervisor

I'm working at a public library, we have 20 or so Windows 7 PCs available for the public to use. At the moment they use Deepfreeze to maintain the base state of the OS so that users can't mess things ...
0
votes
2answers
195 views

What is the purpose of the “Network IP address”, why can it not normally be used? [duplicate]

Possible Duplicate: Is X.Y.Z.0 a valid IP address? Maybe a noob question but when referring to IP subnets, what is the purpose of a network IP. i.e. with a network like 192.168.1.0/24, you ...
2
votes
1answer
159 views

SPF from neutral to positive

I need to be able to configure SPF rule for my domain. Problem is that I can normally receive all the emails. But when I send to some recipients they receive it as spam. In the mail failure delivery ...
-1
votes
1answer
81 views

APACHE httpd.conf error

I have recently installed the latest Apache. It is working fine through localhost:80 and through 10.0.0.51:80, but I can't connect through [External IP]:80. I have forwarded ports correctly, but I ...
2
votes
1answer
3k views

Windows Server 2012 guest machine no internet or LAN

I have a windows server 2012 with hyper-v added as a feature. I have created a server 2012 and a windows 8 guest machines. The windows 8 machine has internet connectivity and can successfully be added ...
1
vote
2answers
121 views

OID (directory service) Installation and configuration on Windows 2003 R2

I need your help in installing and configuring Oracle Internet Directory service on Windows 2003 R2 server machine, I was wondering if anyone can provide any useful tutorial links on the same. I did ...
0
votes
1answer
178 views

Diagnosing WAN performance & peering issues without a second ISP uplink as a comparison?

Background: I am able to access Twitter & Serverfault from work (using Level3) with no problems. However when I use RCN I get crummy service and am not able to load the page. Page reloads ...
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votes
2answers
161 views

Windows 7 OS Cannot Access Google or Bing [closed]

A client I do web development for asked if I could help with his PC- it seems a laptop he bought on Craigslist developed a problem a couple of weeks after his latest system update: he cannot run any ...
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votes
2answers
126 views

I can't connect to internet via lan cable because 2032 battery died and my bios bios info is now empty [closed]

I have a compaq CQ61-112SL from about 5 years now... the main battery is almost dead, doesn't keep more then 10 minutes. anyway my problem is that my motherboard battery didn't have any more energy ...
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votes
1answer
105 views

Is setting up BIND DNS required for making server accessible from internet

I have installed CentOS-6 server in our DMZ. I have a public IP address which I will use for it. Now, how should I set up its DNS in order to make it accessible from internet? Is there any particular ...
5
votes
2answers
173 views

Effects of internet connection speeds on server queries

Can my internet connection significantly effect queries run on phpmyadmin? I am currently 18 down and 30 up. I switched internet connections today and noticed a deep drop in query performance. The ...
1
vote
0answers
1k views

OpenVPN enable split tunneling, client to overload over their own Internet connection

I am trying to enable split tunneling with my VPN network. I am using OpenVPN to host my VPN network and have follwed the steps to get split tunneling working however my clients still get the: 0.0.0.0 ...
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votes
1answer
80 views

Design network with redundancy [closed]

I need to build a redundant solution for my company. The idea is to have internet provided by two different ISP in order that if one link goes down the other link will take over. This should be done ...
-1
votes
2answers
404 views

Can't connect to the internet on XP - ping works, nslookup doesn't [closed]

I'm trying to fix an old laptop running XP, it was all working fine until fairly recently but it will no longer connect to the web (via Chrome, Firefox or IE). I can ping out to the IP address for ...
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votes
2answers
572 views

How does an ISP find a server using it's IP address? [closed]

So basically my question is fairly straightforward (and I apologize if this is a duplicate question): how does my ISP find and connect to a server using just that servers IP address? I understand ...
2
votes
1answer
287 views

Intermittent internet access on a flat network - Router is connected [closed]

I’m looking for some help with network settings. I’ve just started a new job (non-IT!) and we have problems with our office network. I’m the most IT literate in the organisation (15 permanent ...
4
votes
1answer
975 views

BGP path prepended route not listed anywhere

We have a simple multi-homed setup with two routers that advertise our AS to two ISP. The second ISP (ISP B) is only used for backup when ISP A goes down, so we prepended our AS 3 times on this route. ...
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votes
1answer
147 views

Allow 2 different subnets to have access to the internet but not each other [closed]

How would I go about getting say 10.0.1.100 and 10.0.0.100 to both have access to the same internet, but not see each other. My Topology can change to make this happen. Currently I have a ...
0
votes
1answer
377 views

Ports to open in firewall in case of clients getting to a proxy

I have an internal network inside my LAN. The clients are connected via router to the main LAN. In the main LAN there is a connection to internet. I set up a proxy in the main LAN and connected the ...
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
329 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
458 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
246 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
159 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
33 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
347 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
46 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 ...
2
votes
4answers
2k 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
2k 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
1k 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 ...
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votes
3answers
200 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
79 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
139 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
164 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
719 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
11k 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
113 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
720 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
4k 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
955 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
151 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 ...