Networking is the art of connecting two or more devices together so that they can communicate with each other.
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5answers
11k views
How to remove permanent map of a network drive on OS X Lion?
Some time ago I mapped a network drive on my Snow Leopard Mac, which was upgraded to Lion.
The network drive is not active any more and I receive popups all the time with the error:
There was a ...
8
votes
4answers
4k views
How do I block all outgoing ports in Windows XP firewall?
The built-in Windows firewall seems to only block incoming ports, but not any outgoing traffic.
I am looking for an application to install on an xp machine which can be configured a way to block ...
8
votes
4answers
387 views
What is listening at given port?
Is there a way to determine what program is listening to some port, TCP or UDP, in Linux?
8
votes
3answers
596 views
Wireless is slow, but only to the internet, not local connections
I have a Ubiquity RouterStation Pro running the latest release of OpenwRT.
Connecting via a wire directly to the router, or through a switch, I get exactly the speed I would expect, both to my local ...
8
votes
3answers
9k views
Is there a nice, graphical, packet sniffer for Mac OSX?
I have Wireshark and have used tcpdump, but I was wondering if there was a nice GUI to capture and view packets on the Mac. Ideally, something that is protocol aware, so that it knows how to break up ...
8
votes
4answers
2k views
Why can a network address not be a valid host address?
So... I have studied for CCNA and such and been working with IP networking at the least the past 8 years or so. I have always seen and been told that the network address for a subnet is not a valid ...
8
votes
7answers
494 views
What's wrong with my custom patch cables?
I have a box of bulk Cat5e riser cable left over from when I had my house wired. I figured I could use this to make some custom length cables for connecting my computers, switches, etc. I had a ...
8
votes
1answer
4k views
Share Truecrypt container
is it possible to put a truecrypt container on a net share and access/mount it form multiple machines (windows) at the same time?
I fear that if both would write the file could be corrupted.
8
votes
4answers
3k views
Windows tool to find out which port an app is trying to use?
I am guessing that netstat shows apps and their ports that already have a connection and it doesn't show or can't show an app that is trying to open a connection.
If I have an app that's trying to ...
8
votes
2answers
13k views
How to block all traffic but one IP in Windows Firewall?
I'm trying to use Windows 7 firewall to block all outgoing and incoming traffic, from all IP's and for all protocals, except for UDP to and from one particular IP address.
The reason why is because ...
8
votes
6answers
2k views
House Wiring for Ethernet/Coax/Power
Remodeling my house and want to wire up each room with Ethernet/coax wall ports. Both Ethernet, coax and power will be running through the sub-floor.
I've read that there needs to be 2 feet between ...
8
votes
1answer
2k views
How can I force certain applications to use specific network connections?
Let's say I have two active network connections that let me out to the internet.
I want certain applications to only use Network Connection 1, while some others should use Network Connection 2.
Is ...
8
votes
1answer
324 views
How can I make these computers share folders again?
OK, I've had enough of this.
My mom's family's business is having problems with their two computers, which we'll call PC1 and PC2. Both are running Windows 7, and they used to have some shared ...
8
votes
3answers
46k views
How to remove unwanted tunnel adapter connections?
I did "ipconfig" today and found about 10 network interfaces, most of them disconnected.
How can I diagnose this? Where can I remove them?
Edit:
The extra network appear like this:
Tunnel ...
8
votes
2answers
3k views
Default username/password for accessing network shares in Windows 8?
I always had the same username and password on all my network devices (NAS, desktop PC, laptop) in my small home network. This allows me to access network shares of other devices without having to ...
8
votes
2answers
249 views
Always use one slow connection in preference of a “faster” one
In Windows, there's this automatic metric thing where the metric is selected according to the declared speed of the link. I now have a gigabit LAN routed to a 2Mbps DSL service and a HSDPA mobile ...
8
votes
2answers
454 views
What is going on when I can't access an SMB server share (not accessible error) until I run cmdkey to delete the credential?
I have a network connection share issue. The first connection works, and seems to stay connected for at least a few hours. However, after each time my windows 7 PC reboots, it can no longer form a ...
8
votes
4answers
2k views
If I have two internet connections on osx, how can I use both to increase my bandwidth?
I understand that any one connection (such as a non-p2p download) will use just one of the connections, but since most normal activity involves multiple connections at once, I can still in theory ...
7
votes
4answers
1k views
What does static DHCP mean? Static Dynamic is confusing
I've found some home wireless routers/ADSL+ modems (ZyXEL 660) talking about Static DHCP, when refering to assosiating a specific MAC to an IP, but still serve the configuration over DHCP.
Doesn't ...
7
votes
10answers
1k views
How Can I Connect Two Sets of Computers Within My Home Office So There's No Cables On the Floor?
I have a group of five computers at one end of my home office and another group of four computers across the same room. All are hardwired on the same internal network. These cannot be consolidate or ...
7
votes
6answers
395 views
How do you protect your computer from Live CD's?
Linux has grown in popularity in the past few years. Many more people are using Live CD's now than they were say 3 years ago. And with this comes a new problem for network admins. How do you stop a ...
7
votes
3answers
1k views
How does the ISP determine the correct speed for my Internet plan?
I've got an Internet plan with a connection speed of 512 Kbps.
That's fine, but my question is: why do I get 499 Kbps on the Speed Test?
The speed won't go beyond 520 kbps at the maximum level and ...
7
votes
5answers
12k views
Number of Splitters on Coaxial Connection and Cable Internet Quality of Service
Does running multiple coaxial splitters on a single coaxial cable line effect quality of service for cable internet connections? Suppose there are 2-4 splitters between the cable line coming into a ...
7
votes
2answers
334 views
When accessing a drive on a computer over the network, why do you use a '$'
When accessing a network drive over a network, i.e. \\BasementComputer\C$
Why do I need to use the '$', is this just a syntax thing?
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votes
3answers
16k views
How to increase Remote Desktop resolution?
I'm using Windows 7 on a PC and connect to it via Remote Desktop Connection for Mac by MS, using a Mac. On the Mac, I have a 27" Display with 2560 x 1440 px resolution. The PC has a high performance ...
7
votes
3answers
885 views
Isn't localhost simply 127.0.0.1 on Mac OS X 10.7 (Lion)?
I tried telnet localhost on Mac OS X Lion, and this is the output I got.
Trying ::1...
telnet: connect to address ::1: Connection refused
Trying 127.0.0.1...
telnet: connect to address ...
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votes
6answers
8k views
VirtualBox guest OS accessing local server on host OS
On my Ubuntu host I have my local webserver. I installed VirtualBox and Debian as a guest.
I would like the Debian guest to be able to hit my webserver running on my Ubuntu host (for example, I just ...
7
votes
4answers
182 views
What is the purpose of running all the wires of a switch into another switch?
In most photos I see of users' networks I see what appears to be a switch which then runs all the cat5/cat6 wires to another box that looks like a switch.
What is the purose of doing this?
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votes
5answers
276 views
Advice for a Defcon Virgin
I have never attended a Defcon convention before and I am very excited to be attending this year. I need some help in making sure I am prepared for the event.
- If I bring my laptop and connect it to ...
7
votes
4answers
3k views
Obtaining a DHCP IP address if static address is not available
I have seen some questions that are similar to my problem but not a good solution.
Ex. User has a laptop and has a static IP address at the office. They also take the laptop off site where they also ...
7
votes
5answers
1k views
My university tells me I can't use a router in my dorm. Is there any way they can tell?
We're behind some kind of Cisco routers, and have to connect via the Cisco NAC Agent. The tech support here at my university tell me that if I connect a router "the whole building will lose internet ...
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votes
4answers
3k views
Change VirtualBox DHCP to issue 192.168.x.x adresses instead of 10.0.x.x adresses?
I have a VirtualBox (v4.1.8) VM that is automatically assigned with an IP in the 10.0.x.x range via DHCP.
Can I change it to use the 192.168.x.x range instead?
7
votes
3answers
14k views
What's a loopback-address? I.e. 127.0.0.1
What is a loop-back address? 127.0.0.1 is a loop-back address, but what does this even mean? Please be very descriptive and give an example, as I'm having a hard-time understanding this.
Thank You
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votes
3answers
1k views
Can everything be done in Telnet?
Is it true that everything you do on the web such as web browsing and reading email you can do with Telnet?
7
votes
3answers
738 views
How is the MAC address on a computer determined?
While imaging some computers today, I started to wonder... what if two LAN MAC addresses on two different computers matched?... That would cause some problems. I later came to understand that the MAC ...
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votes
3answers
1k views
What happens when you connect 100Mbps system to 1000Mbps network with all Giga devices?
What happens when I do not turn on Auto Negotiation, force my MAC and PHY as 100Mbps, but instead connect (say by mistake) to a 1000Mps network (say all devices in that LAN runs at Giga Speed)?
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votes
3answers
400 views
What kind of information can my University gather regarding my internet use on the University’s network?
I attend a large University and use their network for just about everything. Although I realize security measures probably differ from campus to campus, on a typical University-wide network, how ...
7
votes
2answers
1k views
Should uploading a file on DSL kill the download speed?
I have the 20,127/893 Kbps service through CenturyLink DSL. I've ran speed test and it typically reports speeds close to that.
Except whenever I upload something substantial. Like a video file to ...
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votes
4answers
448 views
Is there a good example for acknowledged, connectionless network protocol?
According to what I've read, there are three main connection types in computer networks:
Unacknowledged, connectionless (e.g. UDP)
Acknowledged, connectionless (e.g. ?)
Acknowledged, ...
7
votes
3answers
9k views
how to find out computer name by ip LAN
How to find out computer name by ip on LAN? I know an the ip address of a computer in question but how do I get its workgroup name?
7
votes
7answers
756 views
How do I get more information on a potential network freeloader?
I have a home network set up, complete with a relatively good password. I'm in Mac OS X 10.6 (Snow Leopard) and have been noticing, on occasion, a computer showing up in my Finder's Shared section, ...
7
votes
2answers
2k views
How to make high performance cluster out of 2 laptops I have at home [duplicate]
Possible Duplicate:
Is it possible to combine processing power of 2 computers?
Hi,
I have 2 laptops at home. Could someone please suggest some free cluster softwares using which I can make ...
7
votes
7answers
965 views
Am I secure from network monitoring software if HTTPS is used?
I will be logging into my bank account and my personal email accounts at work. Its not banned at work, but I just don't want them to save/log a copy of whatever I do with these services. Especially my ...
7
votes
10answers
856 views
VPN for a small organization
I am in charge of a small office network that has < 10 users.
I want to be able to offer them access to the network from their home internet connections. At the moment we have a regular ...
7
votes
4answers
3k views
How to get wireless coverage over my whole house? [duplicate]
Possible Duplicate:
What’s the best way to increase the range of my 802.11g router?
My wireless router does not cover my whole house... Can I do something maybe with multiple routers, ...
7
votes
6answers
2k views
Port scan revealed port 1111 open. What is it?
I am new to systems administration and have a new server running a website with http (at port 80), https (at port 443) and ssh (at port 22).
I did an nmap port scan using my personal laptop and other ...
7
votes
3answers
37k views
How can I find out who is connected to my wireless router? (Linksys WRT54g)
This seems like it would be obvious, but I can't find it anywhere on the screens provided when I log into my wireless router. Maybe I'm just missing something obvious here, but I thought I'd take the ...
7
votes
4answers
655 views
Looking for network simulator (subnets, routers, etc..)
I am looking for network simulator (subnets, routers,wireless etc..) to study for an interview that I have.
7
votes
2answers
412 views
What do the various IP addresses mean?
When I visit a website (e.g. whatismyip.com) it states that my IP address is 13.151.xxx.xxx. However, when I run ipconfig, my IP address is 192.168.0.xx for IPv4 and my DNS adress is 202.xx.xxx.xx.
...
7
votes
2answers
7k views
How do I get rid of the VMware “Unidentified Networks” in Windows Vista and 7?
After installing VMware in Windows Vista or 7, there are two public networks that can't be identified, but upon further inspection are virtual networks created by VMware. The problem is when you're on ...
