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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2
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1answer
878 views

Sharing an internet connection from a virtual Windows 2012 AD Server

I have a virtual HyperV network used by a number of virtual development and testing servers and an all-in-one Domain, DNS, DHCP server; I want to keep the many virtual servers separated from our main ...
0
votes
2answers
189 views

IP Routing with 2 Subnets

We currently have a Cisco ASA on a range with only two usable IP addresses. The Cisco has 217.67.255.31 and the BT NTE box (for the leased line) has 217.67.255.32. (on /32) Now we want to split this ...
2
votes
1answer
4k views

DNS Issue Windows Server 2012

Background: I have a windows server 2012 install with AD, DNS and DHCP. I also have a netopia router/modem providing my WAN access. My router/modem is configured with DHCP off and connected to a 24 ...
-1
votes
1answer
198 views

New Fiber Installation Resulting in Slow Download Speeds [closed]

TWC 80Mbps Cisco ASA 5510 (MTU 1500) Download speeds on my Windows and Mac machines are ~200KB/sec. If I use a download manager that opens 20 concurrent connections I can hit the full 8MB/sec. I ...
-1
votes
1answer
77 views

How do routers manage multiple data streams? [closed]

Routers manage data connections between the internet and computers or connections between computers on a LAN. It makes sense that when, for example, a computer requests music from Pandora, that ...
0
votes
3answers
226 views

CentOS Network Interface Priorization

I have a CentOS server with 2 network interfaces with configurations: eth0: DEVICE=eth0 BOOTPROTO=none BROADCAST=10.0.0.255 HWADDR=xx: IPADDR=10.0.0.2 NETMASK=255.255.255.0 NETWORK=10.0.0.0 ...
5
votes
0answers
385 views

Freebsd change default Internet channel route

I have two Internet channel and Gateway on freebsd. When I switch channel with the command route change default chan2, the command netstat -nr shows changed default route. But traceroute shows that ...
0
votes
1answer
98 views

Internet usage on my network

I need internet usage of computers on my network. Can ISP provide me with a detailed internet usage of individual computers in my network?
0
votes
2answers
223 views

Understanding traceroute-result / the connections between ISP-networks

I was playing with traceroute and discovered that I have a gap in my knowledge on how the Internet works. So, in order to get a better feeling for what happens when I connect to a host, I think I ...
-4
votes
2answers
103 views

How does a private intra network connect to the internet? [closed]

Yesterday I visited the offices of RailTel - a public company in India that provides communication backbone to the Indian Railways, they had a very sophisticated setup of Optical Fiber cables for data ...
-2
votes
1answer
96 views

Unusal internet traffic drop off [closed]

I'm after advice on how to approach a problem I'm having on my e-commerce site. Occasionally, the site suffers a levelling off of users on the website, compared to our historic traffic this is ...
0
votes
1answer
102 views

AT&T Business Class Internet Router Options [closed]

I have a situation where AT&T seems to be very uncooperative in their selection of modems (routers) for their business class DSL service. They essentially gave us only two options for modems ...
30
votes
4answers
2k views

Our wi-fi at work is ridiculously slow, will adding more range extenders improve it?

At work, we have two wireless networks (e.g., Work1 Work2); the Work2 is used downstairs and Work1 is used upstairs. However, both are notoriously slow. The connection is better when we are wired in, ...
0
votes
1answer
68 views

Site-To-Site VPN Failover

Conceptually, how does this work/ would be configured in a Cisco environment, I realise this is quite an open question so please let me narrow it down. Let's say we have two sites: SiteA and SiteB, ...
0
votes
2answers
69 views

Controlling Internet Access

I have just setup a network running on windows server 2008 R2. the server serves as DC with AD services, DNS, DHCP roles installed. MY issue is this, due to the limited bandwidth size, we decided to ...
-1
votes
1answer
614 views

RDP connection works but actual internet browsing not [closed]

basically I got Windows 7 dedicated server and Remote Desktop Connection to it works, while actually browsing internet doesn't (pinging, internet explorer). The details I've been given from host ...
-1
votes
1answer
180 views

DNS Error server 2012 domain

We have a server running 2012 essentials as Domain controller and DNS and a few other bits. But over the last few days suddenly all the client computers on the network have lost Internet connection. ...
0
votes
1answer
153 views

Best practices on lowering latency between two endpoints [duplicate]

I would like to know what tools or what kind of calculation should be made in order to find the lower latency possible between two points physically distant. For example: Ping time from Europe to ...
0
votes
3answers
137 views

Using Network Interface With Multiple IP Addresses

If I have a network interface with multiple IP addresses bound to it can I set which IP address on the interface my server uses? It sees to be set to use the first IP address I added to it. Info: ...
0
votes
2answers
91 views

is it possible to findout who creates a hotspot in a LAN?

In my LAN there are some Mac users who share their LAN connection by creating a hotspot via their Airport. I can see the newly created WiFi networks on any WiFi capable device. How can I find out who ...
0
votes
1answer
133 views

Slow internet connection - what to do? [closed]

These are the network specifications: 6 desktops, all with Windows XP Professional SP2 3 of these desktops have wireless cards 3 of them are connected through Ethernet cable to router Router: ...
1
vote
3answers
251 views

Using a GNU/Linux VM through SSH on the internet, is it safe? [closed]

Is it safe using SSH to connect to a Linux VM? (Hosted by http://linuxzoo.net/) By using PuTTY to SSH in, am I exposing my machine to the internet/host by doing this? What security concerns should I ...
-1
votes
1answer
109 views

windows server 2008 cannot connect to internet [closed]

I am working in project to create local area network for school I created domain school.com and connected the clients with it and assign IP the problem is windows server 2008 cannot connect to ...
9
votes
3answers
561 views

Irregular internet disruption: certain images and JS not loading

first time on ServerFault, and I've got a nice little conundrum. Since a few months now, we've been having issues with our internet connectivity. Environment: Servers: 2 Terminal Servers as an ...
-3
votes
2answers
134 views

How do I choose my static IP addresses [closed]

I'm trying to set up a basic server that can be accessed on the WWW via a domain name. Using Ubuntu 12LTS Server and am stuck on Step 7 of this tutorial: ...
0
votes
2answers
16k views

Can't ping or reach external IP or domain on CentOS 6.3?

I have installed fresh CentOS 6.3 on my machine. Internet is not working at all. How ever I can ping my router and other computers connected on LAN. I've googled and searched various forums but all in ...
2
votes
3answers
175 views

Gigabit switches

We currently in our office have a 20 Mbps fiber optic internet connection with Time Warner. We decided to upgrade our connection to 100Mbps. When the technicians came out, they upgraded the circuit ...
1
vote
5answers
2k views

Microwave Internet vs optical fiber [closed]

Our ISP if offering us Internet via a direct optical Fiber link or a licensed frequency microwave link. assuming there is not obstacle and same distance, which link is more reliable (up-time %) and ...
0
votes
1answer
792 views

MikroTik RouterOS 5.18 Does not connect to internet after restart

I am setting up a RouterOS on an x86 machine. The router is configure and is connected to internet via PPPoE internet connection. I am distributing it to 5 PCs and a Router via RouterOS PC. The setup ...
0
votes
3answers
2k views

Creating my own dial-up internet service

Our company has invested immensely on "machine-to-machine" modems, equipped in embedded machinery over the last decade. These work with old-school internet dial-up service. These machines need to ...
5
votes
2answers
214 views

Modelling University student Internet usage

I am working on a project for a university housing client where I need to model the usage patterns of students living on campus. There are obviously many variables at play here, I am keen to ...
0
votes
1answer
69 views

Multiple broadband providers for internal web servers

Maybe I am using the wrong search terms, but I am having problems finding the answer to my question. We have internal servers hosting our web site. We would like to bring in an alternate provider so ...
-1
votes
1answer
2k views

How to distribute the leased-line internet connection between 15 systems? [closed]

We have a 2 MBPS dedicated leased line with 8 static Ip's, and we want to use it on 15 systems with one server. Service Provider offered the 1:1 Speed with 98.5% uptime. I would like to know the ...
-1
votes
2answers
159 views

What happens when an unexpected packet arrives at a computer? [closed]

I have been wondering this for a few days. I basically understand how networks and packets work. But what happens when an unexpected packet arrives? Like, when I didn't send a request for a website's ...
1
vote
1answer
50 views

How to replicate the internet connection when a XP Workstation is Virtualized?

Hi here is the issue for me; We have a Workstation A which is connected to our Server B ; this workstation's sole puspose is to work as a terminal server for the outside vendor to login to the server ...
0
votes
1answer
5k views

Clients connected to Cisco router can't access to internet

I'm currently undergoing CCNa academy so I got a "job" from my boss to configure Cisco 871 router. Unfortunately we just finished first semester at academy so there are some things that I'm still ...
0
votes
1answer
59 views

External Client should use our proxy to get filtered by our firewall

I would like an external client (4.3.2.1) to use our proxy (9.9.9.9) which forwards traffic to our firewall (8.8.8.8) which then forwards the traffic back to our client (4.3.2.1). So I'm curious if: ...
1
vote
2answers
581 views

Node.js WebServer on Ubuntu 12.04 not visible externally from the Internet (external IP)

Router: IP: 192.168.1.1 Host OS: Windows 7(64 bit) - IP: 192.168.1.2 Guest OS(VMware): Ubuntu 12.04 LTS(64 bit) - IP: 192.168.1.10 Guest OS has a NAT and a bridged connection via VMWare. I'm running ...
1
vote
1answer
78 views

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. ...
0
votes
1answer
427 views

Domain rebuild from scratch

I have to rebuild the entire domain of a company I just started with. It currently runs SBS2003 but it is "FUBAR". MMC is not working, I cant use the BPA on it. I cant get adprep to work to do the ...
0
votes
1answer
2k views

Assigning a public IP on Windows Server 2008 R2

We've recently acquired a Dell PowerEdge r420 server (2 NICs). After installing the OS (Windows Server 2008 R2), we've installed SQL Server 2008 and IIS. Now we have a public IP given to us by the ...
-1
votes
1answer
446 views

Make local server accessible from internet in a local network within a sub-domain?

I recently tried to open a mail server for our company. For some reasons it was better to make mail server separate from other server(s) in data center, so we plugged another server to our local ...
-3
votes
1answer
297 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
113 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
167 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
274 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 ...
-2
votes
1answer
72 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
157 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
182 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
149 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 ...