Questions on networking are related to how to connect two or more devices such as computers, printers, routers, modems etc. They typically involve networking equipment like routers, switches, etc. Read more about computer networks on Wikipedia. See also wireless-networking router switch lan ...
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0answers
16 views
Can't resolve hostnames over LAN
Occationally our LAN stops resolving hostnames. We have no idea why this happens. How can we diagnose these issues?
We have two routers. One is connected to the internet (via a fibre modem). The ...
0
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1answer
21 views
Why does my Mac address reset after reconnecting?
I have ubuntu 12. I'm changing my mac address with ifconfig wlan0 hw ether xx:xx:xx:xx:xx:xx which works. However when I restart my connection my computer resets my mac to my original mac address. I'm ...
1
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1answer
30 views
GUI tool to manage routes for Windows?
I am trying to add a route to my computer:
route add 10.2.0.0 MASK 255.255.0.0 10.8.0.8
But of course it never works.
Is there a GUI tool that can manage routes for me? Adding routes by selecting ...
0
votes
2answers
21 views
Loading and running remote applications with Linux. Not ssh
I am wanting to load an application from a remote Linux pc and run it on the one that I am sitting at. My goal is different than just using telnet or ssh, because by doing that I would still be ...
0
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1answer
40 views
Changing network computer name
I can't find a simple tutorial how to change my computer name under which is it visible on the network (Ubuntu 12.04). It's quite simple on Windows 7 but it looks like there's no such an option on ...
1
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1answer
43 views
How to connect computers to a network printer behind a router?
General question:
How to connect computers to an IP printer behind a router?
Particular question:
How to connect C-1 and C-2 to PRI?
What? Where?
[ISP]
|
| ...
0
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1answer
20 views
In TCPView, what does the * mean in the Remote Address field
In TCPView what does the * mean in the remote address field.
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0answers
15 views
How can we connect TP-link Access Point- TL-WA5210G with Wifi Lan card?
I would like to know that, We have a small Wireless Network that covers 40 mtrs indoor. Now we plan to expand our Network Coverage area apporx. 200 Mtrs (Outdoor). Due to our requirement we used TP- ...
1
vote
1answer
25 views
Does communication through UDP Port 137 always mean there is a port scan done on the host?
If a computer is communicating with another through UDP port 137, can we assume that it is a host port scan? If YES, how can we identify that and stop it from happening?
0
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1answer
19 views
Second network card appears fried. Why and how to prevent a third?
So I have an old computer functioning as an OpenBSD router for my home network. I had 3 network cards, one to wired home network, one to wireless network, and one to my modem. One day, pings magically ...
0
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1answer
13 views
Need Help Configuring Wireless Network Using Switch + Wireless Router @ Office
I've an incomming line from my ISP that comes along with one static IP.
Line from ISP goes to ADSL2 Modem.
One line from Modem goes to my server which uses the static IP.
On the server i've another ...
0
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0answers
52 views
CIFS share mount errors
Trying to mount a network share from a Linksys NAS200 to Fedora 16, as the program I am trying to run won't accept network addresses to save to. I ran it without specifying the IP address of the ...
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0answers
27 views
random internet latency issues
We are having lag issues with our internet and have been for a while now. I have contacted our ISP's customer service SEVERAL times regarding the issue. Every time i talk to them they tell me to ...
0
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0answers
32 views
Wireless disconnect randomly with wpa_supplicant reason=2
I installed ubuntu-server 12.04 on my PC , and I use an usb wireless card to join the network.
It works ok when I boot up my PC , but the wireless disconnects after a while. I pkill ...
0
votes
3answers
69 views
Can I connect two routers to one switch?
I want to connect two routers to a switch which will then be connected to a modem. Now as far as I know a switch does not do network translation and this won't work with one IP address. So I bought ...
0
votes
1answer
28 views
What does it mean when we say that the UDP segment is less than that of an IP segment?
I was going through the signature IDs of Cisco IDS and came accross an ID 4050 which says the above. What does it actually mean? Can anyone explain this to me.
1
vote
2answers
80 views
Does using cat5e cables yield any disadvantages in combination with cat6/cat6a network?
If I were to have a fully compliant cat6 or cat6a network running through my walls... that is to say, wires and jacks... What would be the concequence of plugging a cat5e wire into one of the jacks? ...
2
votes
1answer
41 views
What is “Switching Bandwidth”?
I am trying to decipher exactly what is meant by switching bandwidth on tech specs for various switches. I think I understand, but I'm not so sure.
I know that a port on a 10/100/1000 switch can ...
1
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0answers
36 views
Setting up virtualbox for outside access
I have a computer running a server that my subdomain on my shared hosting account points to. IE subdomain.mydomain.org goes to my home server. Now then; what I'm wanting to do is be able to access my ...
0
votes
0answers
10 views
DHCPD (Slackware) - Disabling auto-generation of gateway as DNS server
Good day,
I am using a Linux workstation on Slackware 13.37.
One "problem" I have had to deal with ever since 11.0 is the following:
DNS servers are queried and determined at startup by DHCP ...
0
votes
1answer
7 views
NAT on MAC-filtered network
My ISP (Hyperion S.A.) provides internet using a UTP cable with MAC filtering. I'm trying to set up a router so that I can connect multiple computers to the network. Most computers would connect ...
5
votes
3answers
152 views
How do debug DNS name resolution? (nslookup works, but telnet doesn't)
I'm trying to connect to a website:
http://superuser.com.sixxs.org
i can ping the address:
C:\Users\Ian>ping /6 superuser.com.sixxs.org
Pinging ipv6.nginx.sixxs.net [2001:838:2:1::30:67] with ...
0
votes
1answer
15 views
Command line tool to adjust X server settings while running
Is there a command line tool that allows you to adjust the settings for a running X session?
For example, the equivalent for pulseaudio would be the pacmd command line utility which allows you to ...
0
votes
0answers
13 views
Network shows 'device not managed' in Ubuntu 11.04
I have Ubuntu 11.04 and set up a static IP address in /etc/network/interfaces.
When I try to restart Ubuntu, suddenly in the task bar it shows a message
device not managed
How can I re-enable ...
0
votes
1answer
20 views
SMB doesn't work but computer is ping'able by NetBIOS name
I have a laptop and a desktop connected via a router. Both are running Win7, and both are configured for Home network with all the settings such as computer discovery enabled.
If the laptop connects ...
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votes
3answers
83 views
how to prevent people plugging the cable modem into unauthorized devices? [closed]
I am looking to run a firewall at home using an old desktop running security firewall software (maybe astaro-ideas?) with two nic’s, one connected to a cable modem and the other to a switch ...
5
votes
1answer
46 views
In TCPView, why does the svchost.exe process need to listen on so many TCP and UDP ports
Looking at TCPView I can see over 25 svchost processes using TCP and UDP ports. If these svchost processes are the various services required by Windows, then why would so many be using the network?
1
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0answers
22 views
Creating a new network namespace on Linux
I'd like to create a new network namespace on Linux.
http://www.spinics.net/lists/linux-containers/msg10895.html tells me that I can attach a shell to an existing namespace with ID X by running:
$ ...
0
votes
0answers
18 views
How does Windows Vista or Windows 7 Determine, if I have internet connectivity or not? [closed]
Possible Duplicate:
How does Windows know whether it has internet access or if a Wi-Fi connection requires in-browser authentication?
Windows 7 & Windows Vista can detect if I have an ...
0
votes
2answers
38 views
Windows XP desktop freezes on trying to connect to internet
My Windows XP desktop runs fine as long as you don't open a browser or try to connect to internet. As and when I try to connect to Internet or open a browser. It freezes and I manually need to ...
1
vote
1answer
53 views
Unable to connect from the host OS to the guest in VirtualBox
I have an Ubuntu machine and I have installed 64-bit RHEL on VirtualBox.
I changed the adapter settings of the guest to connected to bridged network, and I am able to ping my host from the guest, ...
0
votes
2answers
20 views
How to connect my External SATA Hard Drive Case to the network ( / to the router )
I have some External SATA Hard Drive Case ( with some Hard disk inside ) and i want to make this Hard disk to be shared in all my network.
So, i want to make some connection between the External ...
1
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0answers
25 views
Sharing multiple internet connections though a single server
I'm having a 3 separate Internet connections which are connected through through the router for each PC.
I would like to know is it possible to combine all these connections and share the connection ...
0
votes
1answer
27 views
Windows 7 not alowing option to browse network computers
Prior to upgrading XP to 7, my network worked fine. Now, the Win7 machine cannot browse the Vista computer or the PVR. Vista can browse Win7 fine.
In Windows Explorer on the left bar only the Win7 ...
1
vote
2answers
28 views
Windows XP System Has Limited Connectivity With Multiple Routers
My folks have a Windows XP system (fully patched) that recently stopped communicating with the local router.
Wired connectivity is as follows: Computer >> Router (Netgear WGR614v6) >> DSL Modem >> ...
0
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0answers
173 views
No Wired connection on Ubuntu 12.04 (LTS) Desktop, maybe after update(?)
I am running Ubuntu 12.04 (LTS) and for some reason I cannot connect to the internet since this morning. It was working fine until last evening . I cannot think of any reason for this strange, may be ...
4
votes
1answer
44 views
Copying to a network shared folder extremely slow
Have three computers both with windows 7 connected to each other with a TRENDnet gigabit switch, have a folder on computer A that is set as shared folder under the advanced sharing settings for the ...
1
vote
0answers
36 views
Can only access Internet through IE when connected to home network
I'm trying to figure out a network problem I've picked up on my work Windows XP laptop over the past week or two. Everything was working perfectly until recently.
When connected wirelessly to my home ...
0
votes
2answers
32 views
Switch/Router configuration
This has been bugging me for sometime and I really need to learn why I am having this problem.
I have verizon fios and an ActionTech router (http://www.actiontec.com/products/product.php?pid=189)
I ...
0
votes
1answer
14 views
Modem not detected after unplug in Ubuntu
I use a modem d-link DWM 152,,
at first be detected, was able to browse. connect the modem still keep fit (I forget if it still connect.), I just unplug it. when i plug it in again, the modem is not ...
3
votes
1answer
104 views
Configure NAT on router PC
I have a problem with NAT configuration. I made my laptop to be a router, using Ubuntu 12.04. In the terminal, I typed:
iptables -t nat -A POSTROUTING -o ppp0 -j MASQUERADE
but the client still has ...
0
votes
1answer
44 views
Windows 7 has trouble reconnecting to wireless network when waking up
I am somewhat-supporting a laptop that connects to a wireless router via WiFi. When the laptop is resumed from "sleep" mode, the network connection is often gone. Someone on site has reported that ...
0
votes
0answers
32 views
How to setup IPtables to allow capture network traffic from a virtualbox VM configured with NAT
I am certainly not an IPtables expert, but I am looking to accomplish the following:
I would like to have a guest virtualbox VM that can't get online that I can monitor all network traffic attempts ...
0
votes
0answers
32 views
Netgear WN604 Wireless Access Points - Randomly No Internet Access?
I've installed Netgear WN604 wireless access points at each of my companies branch to allow our staff and customers to connect wirelessly. For several months everything has been working fine, until ...
0
votes
0answers
37 views
tcpdump loses connection
I'm on Ubuntu – but it's the same on Debian. I'm using tcpdump in order to track the connection of computers on my private network. At some point, the internet connection of the computers launching ...
0
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0answers
17 views
What are the (probable) reasons of copy&paste over RDP connection failures?
Searching the internet gives workaround method(s) of reviving the copy&paste (rdpclip) failures between remote over RDP (remote desktop) computer and client (source) host.
But sometimes these ...
2
votes
2answers
68 views
Connect two PCs via Ethernet to multiply bandwidth of 1 Gbps NIC
I just wanted to know if there is a way to create an Ethernet channel between two PCs.
Let's say that I have two PCs each having two 1 Gbps NICs, then I want to connect them together so that there is ...
0
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0answers
58 views
Free services for shared domain lookups and reverse whois? [closed]
I was wondering if anyone was aware of some good, free web services for finding the domain names used by one IP address (usually for shared) and for reverse whois lookups?
Examples of finding domain ...
2
votes
1answer
44 views
Restrict access of shared folder to certain network and certain user
I have a router with local internet provider cable connected. My 2 notebooks are connected to this router through its Wi-Fi local network. I have shared access to folder at my first notebook with ...
1
vote
1answer
21 views
linux drops packet when trying to route it - why?
I track packets using LOG targets for all chains of all tables and the last chain I see my packet in is the POSTROUTING chain of the mangle table:
mangle_PREROUTING: IN=eth0 OUT= ...
