Networking is the art of connecting two or more devices together so that they can communicate with each other.

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4answers
585 views

Difference between the reliable delivery by link protocols and by TCP

There is a quote I forgot from which network book I copied long time ago. Some link-layer protocols provide reliable delivery on a link basis, i.e., from transmitting node, over one link, to ...
-1
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0answers
7 views

Error in promoting server as a domain controller?

installed active directory successfully on server (using vmware), then i promote the server as a domain controller, all the prerequisites check passed successfully. but when i hit the install button ...
0
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1answer
17 views

Ethernet port/device not picked up at all in Windows 7

on my Windows 7 machine my ethernet port is not recognised at all. Even in device manager (shown below) it is nowhere and same as in network connections. I've tried installing the motherboard ...
0
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0answers
13 views

Why does Windows use the same identifier for different ping sessions?

I noticed while debugging some NATing issues at work that Windows (Windows 7 in this case) echo reply and echo responses are always setting the ICMP identifier field to the same value regardless of ...
2
votes
2answers
2k views

Converting bandwidth: Bps-Bytes/s MBit-MB

When buying network hardware the specs usualy contain "Bits". Software usualy uses "Bytes". What are the formulas for converting bandwidth measures? Examples (assuming perfect conditions, ignoring ...
0
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2answers
4k views

Windows can't communicate with the device or resource (primary DNS server)

I am using Windows 7 Home Premium and am connecting to the Internet through Homeplug. When I connect and enable the LAN the status shows that I'm connected (the IPv4 shows connected), but after like ...
0
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0answers
10 views

Bridge Citrix Desktop Network to Host Computer

The project I am currently working on requires me to use a Citrix desktop client. While the Citrix desktop client isn't all that bad, I am not (nor will I ever be) an admin in that desktop ...
1
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2answers
2k views

DD-WRT and Chromecast: default WLAN to LAN bridge blocks UDP?

I have DD-WRT running in gateway mode on a DIR-615 I1. I've updated to the newest available build. Chromecast is a wireless-only device, for those unfamiliar. The device has been set up and ...
1
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4answers
6k views

Internet not working on a VirtualBox Linux machine

I installed VirtualBox on a Windows 7 PC and installed Xubuntu (Ubuntu with XFCE) on it. Now on the Windows, I am connected to the internet through a LAN which automatically authenticates to connect ...
20
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9answers
4k views

How to track LAN usage? (AKA 'top for LAN')

There's an evil application that is eating ALL my upload bandwidth (I'm brazilian, it's only ~35kbps) for like 80% of the time my PC is turned on. I would like to know if there's any way to track ...
1
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1answer
35 views

Blocking an IP in Windows Firewall

I am attempting to block a connection to a games' masterserver (see this for more information, including why I am trying to do so), but however redirecting the DNS has not worked, so I am trying to ...
0
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0answers
31 views

configure iptables to block all(as much as possible) bittorrent traffic

good day all This is my current iptables setup Generated by iptables-save v1.4.7 on Wed Apr 9 13:50:31 2014 *filter :INPUT DROP [0:0] :FORWARD DROP [0:0] :OUTPUT ACCEPT [0:0] :LOGDROP - ...
0
votes
1answer
23 views

Benefits of using a VPN for personal Internet browsing [closed]

I can understand a VPN is good in this scenarios: For a company network, to allow encrypted connection among company computers and with the comany server. If you are connected to a public Wi-Fi, ...
8
votes
2answers
5k views

Internet appears to function correctly, but cannot access Steam or Battle.net?

I am able to surf the web and my LogMeIn client is not reporting any errors, but I cannot connect to Battle.net or Steam. (I can still visit Battle.net and Steam via my web browser.) I was actually ...
0
votes
2answers
24 views

Tasks done by ssh server when it recieves a request

When i ssh into a server using ssh -vvv user@ip then It gives me all the information of the steps that a particular client is performing in order to connect to a OpenSSH Server. So i was Wondering ...
0
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3answers
31 views

What is writing to my hosts file?

I've got an odd situation where I'm emptying out my hosts file but when I ping something that used to have an entry in the hosts file the hosts file gets populated with the entries that I've just ...
0
votes
1answer
42 views

Host a network behind another network

I'm not very good at this but I'll try to be as specific as I can. The situation: I'm getting my internet from my neighbour through wireless connection to my stationary PC. I have some network ...
2
votes
2answers
70 views

Can ping the ip-Address but not the site and neither browse to it

Due to some malware or virus, I was unable to connect to any site while the connection showed "Internet Access". On experimenting, I found that I was able to ping the I.P. address of google. But when ...
0
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0answers
41 views

My android app doesn't work on university wifi [migrated]

I've developed an Android app relying on a REST server. The app works great on mobile network and also on my WiFi. But when I try it at the university, it cannot connect to the server. The connection ...
0
votes
1answer
36 views

What might these connection attemps mean?

Yesterday I opened a port on the router, forwarded to LAN IP 192.168.1.201 and blocked the ADSL company password to access the router. There is no other open port on the router. This log is from the ...
0
votes
1answer
2k views

Changing IP Address of ZTE CDMA 1x USB modem

My Reliance Netconnect ZTE CDMA 1x USB modem has a static IP address. I want to change it, but through ipconfig it's not getting changed. How can I change it, then?
1
vote
1answer
104 views

How to configure pptp vpn client on ubuntu server to route specific traffic?

I installed and ran successfully a pptp vpn client on a ubuntu server (aws ec2). I want to be able access certain websites through this vpn. However, still able to ssh and connect to server. $ route ...
0
votes
0answers
17 views

Segregating/Separating a device (ATT 3G Microcell) from internal network without using DMZ

I would like to put the ATT 3G Microcell in an isolated network from a network that has the rest of my devices, by which I mean I want the ATT 3G Microcell to only be able to access the Internet, but ...
0
votes
1answer
17 views

Monitoring Windows Machine/Server

We currently have a business running QuickBooks who complain of sluggishness. A quick view of TaskMan does not show CPU maxed or network port flooded. The server is 2012 and is a Windows 7 guest ...
0
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0answers
41 views

Windows 8: How to share ethernet network connection with Hyper-V (virtual switches) installed

I am currently at a place with no wifi available. I have an ethernet connection which I want to share with my phone. This is a standard task and normally pretty easy to do with Windows 8. But since ...
0
votes
1answer
39 views

Block a Subdomain in Windows Firewall

Gamespy is ceasing its Master Server support for many games at the end of May, including Crysis 1, Wars, and 2. I have worked with Crysis 1 and Crysis Wars for a very long time, and now the entire ...
2
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2answers
2k views

Network devices disabled

I've been running the Lucid Lynx alpha since first release and only now, after recently putting my computer into suspend then restarting, has the networking failed completely. Both wireless and ...
0
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1answer
35 views

Internet Speed is so slow

So I am starting to get very annoyed at my slow internet. I live a hour and a half or so from London and 45 mins from Camebridge and I don't understand how my internet speed can possibly be as slow as ...
1
vote
2answers
2k views

Can't access Thomson modem interface anymore

I used to be able to access the web interface of my Thomson DWG849 router/modem through both 192.168.100.1 and 192.168.87.1, but now, suddenly, I can't anymore. I have tried resetting the router ...
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4answers
41 views

Internet Connection Sharing via Switch

i want to ask if is possible to share an internet connection via a switch. Two raspberry pi are connected to the switch and a windows laptop that is wirelessly connected to the internet. Is it ...
0
votes
1answer
34 views

connecting to windows server via remote desktop

I have a windows server 2008 machine sitting at a host company. The dns server is 64.135.1.20. I set that in the "Preferred DNS server" section when following the below instructions. I set the Default ...
0
votes
1answer
41 views

How to forcibly refresh and renew my IP address? [duplicate]

I am in the Hostel and we are provided with Wi-Fi connectivity.The problem is that the IP address that is assigned to my machine works only for 5-6 hours. I want to refresh the IP address so that i ...
1
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1answer
22 views

How to use different gateways for different IP addresses when connected to multiple gateways - Win7

My office has a LAN and a Open ADSL (without proxy) via WIFI. Though I'm connected to both I can't use them same time. So How am I edit and add routes so for specific ips uses different gateways. I ...
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0answers
25 views

(Resolved) Bridging networks issue

The architecture is: [ Router 1 ] [ Router 2 ] [ Router 3 ] [ aDSL Router ]---UtpCable---[wireless router]---UtpCable---[wireless router] [192.168.1.254] ...
3
votes
3answers
3k views

OSX 10.6 keep using default route other than what it gets from wireless DHCP

OK, this problem has been driving me nuts for days now. I'm typically a linux guy, so while I'm comfortable with the command line stuff. I have no idea where to look on OSX. And typical googling is of ...
0
votes
1answer
32 views

Trying to share folder in CentOs after installing guest Addtitions

I have VirtualBox 4.3.10 running a Minimal CentOS 6.5 using NAT adapter in my Win 7 . I have installed Guest Additions and I am trying to share Drive E: as you can see in this picture. Next I ...
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1answer
53 views

Classful addressing and routers networks

With classful addressing there are basically three classes of networks, a public or private organization can request,for its hosts,a network of class A,B or C with A being the largest followed by B ...
0
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0answers
63 views

Wireshark Capture Filter

I am new to wireshark and I am trying to capture an ICMP packet over 802.11g, I am using windows and pingplotter. The issue is that on wireshark capture I am not getting any ICMP packets no matter how ...
0
votes
1answer
25 views

How to add code into the linux kernel?

I am studying how to analyse and evaluate the TCP/IP protocol stack of Linux. My goal is to study the performance of the tcp/ip protocol stack as a whole, to study the time cost of each layer and ...
0
votes
1answer
59 views

Setting up a working internet connection in solaris 11

the title of this post states most of my problem. I am trying to connect to the internet for like 3-4 hours. But for being a total newbie at unix environment I failed pretty badly. How can I configure ...
4
votes
1answer
1k views

Configuring default gateway returned by dhcp server

I have a machine which connects via ethernet to a private LAN, and wireless to a network which provides internet connectivity. The private LAN uses a wireless router to perform DHCP. The problem is ...
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0answers
20 views

Windos 7, VMware and suse linux

I have a Windows 7 system on which I installed a WMware player. On this vm I installed a suse linux with samba. I want to share files between both systems. My network connetction is "host only". But ...
0
votes
0answers
48 views

Virtual ethernet adapter not receiving traffic

I have VPS with one network card and 2 IPs (.88 and .87). I have separate mac for .87 address. I need to setup another (virtual) network interface with this IP and mac. I'm not an admin, so this is ...
0
votes
1answer
17 views

Windows Server 2012 R2 Network Interface Priority on outgoing connections

On a Windows Server 2012 R2 Essentials I have two identical network cards. Both cards are connected to the same switch and the two switch ports are configured to the same VLAN. The network interfaces ...
0
votes
2answers
2k views

“Destination port unreachable” when pinging computer in another subnet

In my home network, I connect to the Internet through a router (192.168.1.1). I also have another router (192.168.1.15, 192.168.2.1), this one using OpenWRT, configured as a wireless client. One of my ...
3
votes
3answers
3k views

How to use connectify to share files between 2 laptops, one running Windows 7?

I have 2 laptops one running XP and another Windows 7. Both have WiFi-card installed. I want to be able to share files between these 2 machines and then in next step also be able to share internet ...
0
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2answers
81 views

Debian: connect two local networks

currently I'm trying to connet two local networks as it seems both networks don't know each other. Herre is the network setup: My local home network: 192.168.0.0/24 A Rasperry Pi as an Access Point ...
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2answers
25 views

What exactly is a trigger port and how do I figure out which one it is?

I have this router now since a few weeks and I need port forwarding for certain games and/or gaming services such as Steam. Now normally configuring this is a non-issue for me, but what boggles my ...
0
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0answers
13 views

cascade routers. Cant acces second router configuration

I'm configuring two router to have the same network ir order to access to an arm board throught ssh. First thing I done is set the main router with ip "172.26.0.1", mask "255.255.255.0" and gateway ...
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0answers
26 views

Linking router from VPN to main network?

So, here's what I have going on now: Thomson Cable Modem ---> WAN port on D-Link N600 (IP 192.168.0.1 - DHCP 192.168.0.100-149) running stock D-link Firmware ---> Wan port on Linksys E1200 (IP ...