Questions on networking will relate to how to connect two or devices such as computers, printers, routers, modems etc. Read more about computer networks on Wikipedia. See also: wireless-networking
0
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1answer
18 views
Local area network connection is not visible
I have a Lenovo t42 with with Windows XP SP3.
The "Local area network connection" is not visible in Network Connections. The Ethernet controller and adapter driver is properly install (no yellow ...
1
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1answer
40 views
pinging wireless clients is gambling
For browsing the internet on all computers in my house, I've setted up a small home network some months ago.
Internet works perfectly everywhere, but I have some odd problems with communication ...
1
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3answers
60 views
Where are addresses from the network 0.0.0.0/8 used in practice?
I read that this pool:
Means "these hosts" in "this network"
Is used for self-identification
Is used for broadcast messages
My questions are:
Where exactly these addresses can be found?
Which ...
0
votes
1answer
20 views
Internet Blackouts - Random Timeouts in Intervals
Currently we are having random time outs on our internet connection. I can confirm this by pinging google.com/yahoo.com and other sites and I see the connection work for about 10 - 12 requests, then ...
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0answers
18 views
see bandwith usage by wired clients (MACs) in home network
In home network, 4 devices are connected by LAN cables to the router. Router is simple DLink supplied by ISP. I need to know which bandwidth is used at the moment by each of 4 "clients" ("cables").
...
0
votes
1answer
21 views
Find Duplicate Folders in all partitions and or network partitions on my computer
I need a software to find large folder duplicates on my computer which match folder sizes exactly. It should be able to access multiple locations, and if possible network drives too.
I have tried ...
1
vote
1answer
52 views
How do I tell if employees are using TeamViewer at work?
I've been tasked with helping the security department close up a few holes. They are in the process of hiring a dedicated network guy, but for the time being, I'm the closest they have. They've ...
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0answers
10 views
Please suggest free webcam-snapshooting-FTP program for Windows?
The program must be able to capture 1 HD frame from a webcam into jpeg file every 2 seconds and send it to specified FTP-server, surviving connection errors, physical network problems and so on.
0
votes
1answer
30 views
How to monitor router traffic?
I have a Cisco DPC3825 DOCSIS 3.0 modem/router combo. I want to monitor the traffic that passes through my router such as bandwidth usage.
I have bandwidth meters like DuMeter on my PC to monitor ...
0
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1answer
30 views
What is a MAC layer broadcast?
In one of the programs I am writing, I need to find some hosts on a network. I don't know how many will be out there, and it is possible that the network might be larger than class C.
Somebody ...
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0answers
15 views
Why am I unable to connect to the home hotspot?
I use WPA-PSK with password and my router and having trouble connecting to it with my laptop I fixed yesterday by resetting RTC (CMOS?) battery. Although my laptop additionally has errors with my ...
0
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3answers
53 views
Intrusion Detection System for a home network
I would like to setup an IDS/IPS (network intrusion prevention and detection system) like snort, but I would prefer not have to dedicate a computer to handle it.
Are there any applications or routers ...
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0answers
30 views
Linux networking forces browsers to crash across all distros
I am really starting to think this is a MB issue seeing as I replicate the problem with all distros, all browsers and using usb and pci wireless and ethernet cable.
The net connection behaves very ...
0
votes
1answer
16 views
Edgemarc 4552 DSL & T1 at the same time?
I have an Edgemarc 4552 Router with 4 T1 inputs and a single DSL input. Can both T1 and DSL be connected to the same Router?
5
votes
1answer
56 views
How does Google bypass IP routing?
At the Google Public DNS Performance Benefits page, they claim
In Google Public DNS, we have implemented several approaches to speeding up DNS lookup times. Some of these approaches are fairly ...
1
vote
1answer
27 views
Netgear DGN2200 router drops connections / duplicates IP addresses
(I hope I am on the right StackExchange network - apologies if not as I'm visiting from stackoverflow)
We have a Netgear DGN2200 router in the office where 9 of us work. It has been fine until ...
1
vote
1answer
51 views
All downloads being interrupted
System: Windows 7 Professional 64bit. 8GB RAM, Intel i5-2400 CPU, +300GB free on the hard drive. AVG Internet Security 2012 (enabled & disabled, with firewall enabled and disabled - no effect for ...
0
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1answer
48 views
Usefulness of CIDR [closed]
Possible Duplicate:
What is Classful addressing?
Over the years I've heard the term "CIDR" and never gave it much thought. This morning I perused the Wikipedia article on it, and came away ...
0
votes
1answer
25 views
how access Apache server on Ubuntu(10.0.0.6) from windows vista(10.0.0.9) inside local network?
I have Apache server on Ubuntu that i can access with 'localhost' - network local adress 10.0.0.6
I have windows vista with local adress 10.0.0.9.
I want to able access ubtunu 'localhost' from ...
0
votes
1answer
24 views
Networking - i want to prioritise traffic on a sky router without QoS
I have the timeless issue of being the 'gamer' in a shared house on a highly contentious Sky internet connection and i want to do something about it!
(can't come home from a hard day at work and ...
0
votes
0answers
27 views
Virgin Media Superhub intermittent LAN access
I have a very odd problem with my Virgin Media superhub (which is a rebranded Netgear cable modem/router).
After around 1-2 days uptime the computers connected to it will stop being able to ...
0
votes
1answer
59 views
The meaning of port 0 in netstat output
What is the meaning of port 0 in netstat -an output in Windows? I'm asking about socket in Foreign address column:
0.0.0.0:0
I know that 0.0.0.0 address means, that host is listening on all ...
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votes
2answers
34 views
Why is my network utilization a sawtooth wave?
I've noticed that my broadband link always gives me a sawtooth shaped utilization graph when I'm downloading large files. It looks like this from Task Manager on Windows 7:
When I'm doing large ...
0
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0answers
23 views
Router configuration monitor. [closed]
Looking for a tool to manage/backup switch, router and other network device configurations. I have tried Kiwi Cat tools, Cisco Network Assistant. So far did not like either one of them. I am looking ...
0
votes
1answer
35 views
What's wrong with my router?
We recently bought a new router, a Sitecom 300N, to replace a broken one. It worked for about a week but now the internet pretty much gone, I can rarely get a page to load.
I can ping the router's IP ...
0
votes
1answer
45 views
One PC blocks Internet access on the network
One (and always the same) PC blocks Internet access on the entire network. It usually happens Sunday morning after not using it on Saturday, but it could happen any time.
What happens is that this ...
0
votes
1answer
17 views
netsh add profile returns “An attempt was made to load a program with an incorrect format.”
Using netsh, I used the following command to add a wireless profile
add profile filename="c:\profiles\DLINK-Profile.xml" interface="D-Link DWA-125 N150"
All parameters are valid. But I get the ...
0
votes
1answer
50 views
Extremely slow LAN read speed from 1 computer, good everywhere else
I have a multi computer pseduo ad-hoc home network using Windows 7 Homegroup and some Remote Desktop on occasion. This has worked well to date until I added a new machine and now I am having trouble ...
0
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0answers
25 views
Office network grinds to a halt when I connect via VPN
We have an office network on the 192.168.2.x subnet.
I am connecting in to this from my home mac via VPN. However, as soon as I connect, the internet connection at WORK goes very slow.
My home ...
1
vote
0answers
24 views
Sitecom router dropping Steam packets
From my ISP I got this Sitecom WL-582 wireless router (also known as the Wireless Router 300N X2 WL-341) for my home network. By itself, it works OK, but last week I noticed that I wasn't able to ...
1
vote
2answers
58 views
+50
Linux: Browsing Windows file shares with a tree view
In the Thunar file manager, tree view does not expand for 'Network' section even once I click device name,
It is possible to browse .gvfs, but it has problems with file deletion ('can not find ...
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votes
0answers
21 views
Finding a port number for an NAS resource on mac book
I have an external drive connected to a network using an Addonics NASU2 adapter. The adapter has Samba, FTP and media server capabilities. I can see the drive in a Finder window identified as ...
10
votes
1answer
226 views
How come sites like Google/Facebook/etc. don't get DDOS'd even though they receive so many requests?
Something I don't understand:
(Tens/hundreds of?) thousands of people simultaneously try to connect to a site like facebook.com or google.com.
From what I understand, they must all necessarily ...
2
votes
2answers
42 views
create a private network with router
I would like to create a private network off of my works production network. I'm going to be testing some software on this network. And I can't have any traffic from the test boxes interfering with ...
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0answers
10 views
Does change of tcp_keepidle or any of the tcp parameters require a reboot(AIX)?
AIX 5.3
oslevel -r
5300-12
We require to change the tcp_keepidle value using :
no -o <tcp_parameter>= ...
0
votes
2answers
48 views
Connect computers in a network, via hub or through another computer?
I'm using an internet hub to connect broadband and computers. When setting up a home network (for some simple file sharing), I can choose
"this computer connect to internet through another computer" ...
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0answers
13 views
How to block all ports but the HTTP(S) ports on Tomato firmware?
Is there also a way to log users on the router to prevent them using illegal sites, P2P etc.?
1
vote
2answers
76 views
+50
Samba outside local subnet?
I just transitioned my home server from and older desktop with two LAN ports (Server B) to a new low-power one (Server C) with only a single LAN. I get three IP addresses from my ISP and me and my ...
0
votes
0answers
25 views
Can i3 CPU be bottleneck in gigabit network?
Say I have 3.1Ghz i3 CPU on Ubuntu server. Can it be bottleneck in GB network reaching around 80-100MB/s throughput if Sata3 HDD has average/roughly 100MB/s r/w rate? Considering all cablings has max ...
0
votes
1answer
28 views
Sharing audio over an ip network
I have 2 seperate computers, A and B, both run on windows 7, connected by a network.
My headphones are plugged to computer A.
I want to hear the audio from computer B on computer A.
Is there software ...
2
votes
2answers
39 views
How can I troubleshoot and fix a broken internet connection where the network connectivity status indicator shows a caution sign?
Ever since I switched to Verizon FIOS from Verizon DSL a year or so ago, I've had an intermittent problem on my Windows 7 desktop machine where the system boots with no internet access and the ncsi ...
2
votes
1answer
22 views
Network Diagram equivalent to UML
So UML is a modeling specification for software & systems designs. I am wondering if there is an equivalency to UML for drawing network diagrams (for systems and networking professionals). ...
1
vote
3answers
63 views
Can a gigabit switch's performance degrade over time?
I have this Netgear 5-port gigabit switch. You know, one of those rounded white models. Well, it worked well in combination with a Netgear DSL router for a few years.
The network topology is ...
0
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3answers
52 views
Testing Gigabit network
I wonder, if wiring for 10/100 and 1000 is same, how can the following lan cable tester detect the difference between them?
0
votes
1answer
48 views
Can't get bridged networking to work between linux guest virtual machine and Mac host
I'm trying to establish bridged networking from linux mint vsn 12 in virtualbox to a Mac Lion host.
Mac config:
Network setting: en3 configured by DHCP
Sharing setting: Internet Sharing ...
1
vote
0answers
51 views
Constant network drop between two XP machines
I am not sure when this started happening or why, but I have a home office running:
a "server" XP machine with an external hard drive attached to it via USB, and
my working machine, also an XP ...
0
votes
2answers
30 views
http ftp imap smtp and some additional ports not working
I'm writing this using a 3G connection on my phone.
At lunch time yesterday, the ports above and a few additional other ports like 40001 and 4089 stopped working on my internet connection at work.
...
0
votes
3answers
44 views
How to set up multiple IP addresses on my Linux?
I'm doing some computer network homework and I'm supposed to develop some sort of Peer to Peer file sharing software. I want to test it and run a few (five) instances on Ubuntu 11.10, which means each ...
0
votes
2answers
39 views
Need help to connect to my client's server from my laptop using a cross cable
I need to be able to connect to my client's server from my laptop ethernet port using a cross cable. The server has no attached monitor/keyboard and only has a network card, which carries the ...
0
votes
0answers
16 views
Are link layer properties on a local area network adapter cached?
I changed the Local area connection properties for my N/W adapter:
Link-Layer Topology Discovery Mapper I/O Driver, and
Link-Layer Topology Discovery Responder
I expect to see changes in the ...
