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2answers
536 views

Why is there an interface field in routing table?

Imagine that we have an IP-packet, and we need to figure out which interface it should be sent through. There is an eth0 (for example) corresponding with our packet destination address. But what if ...
1
vote
3answers
110 views

In which network layer is the data located that lets a gateway(using NAT) know which computer a packet is meant for?

Main questions: In which network layer is the data located that lets a gateway(using NAT) know which computer a packet is meant for? Could someone explain how the process works? In explaining the ...
1
vote
3answers
222 views

Why do I not get to the same website when using this IPv4 address instead of the url?

When I capture packets using the packet analyser wireshark while visiting http://en.wikipedia.org/wiki/Hydrogen I can see packets that use the HTTP protocol (e.g.a GET request). My Get request uses 4 ...
2
votes
1answer
23k views

What does `Type: IP (0x0800)` in the Ethernet II part of a ping packet mean?

If I ping to another pc in my network I send a packet that consists out of an ICMP part, a IPv4 part and a Ethernet II part. I can see this using the packet analyser 'wireshark'. Now the Ethernet II ...
0
votes
1answer
299 views

Can two network adapters work in different IP protocols simultaneously´╝č

My laptop has two network adapters, one is wireless and connected wirelessly to a wireless router, another one is wired and connected to a network supported IPv6 with cable. The question is , can I ...
-1
votes
1answer
284 views

Implementation of protocols [closed]

I want to know how different protocols are implemented. For instance, take example of TCP/IP. This protocol is used for the transmission of data (if I am right). Now, I want to know how this protocol ...
2
votes
5answers
25k views

How do I limit packet capturing in Wireshark to only a specific protocol?

I would like to listen to HTTP traffic on port 8080. When I start capturing packets in Wireshark, it's flooded by packets using the SSDP protocol on port 1900. I would like to limit the packet ...
2
votes
2answers
2k views

Ethernet a protocol or cable?

Is ethernet a protocol or cable? How it is different from Cat-5 cables? I'm very confused when I hear the term 'ethernet' for a protocol and cables.
5
votes
3answers
31k views

How to download and install IPX on windows 7

From where I can download IPX for windows 7 and how to install it? Thanks alot for your help.
0
votes
2answers
49 views

Sharing internet connection.- Complex

Scenario 1 Desktop , 2 Laptops , one wifi router , one network cable . All computers are on win XP Laptop A and Laptop B are connect to the network of wifi Router, they can access internet. My ...
1
vote
2answers
574 views

What is `gopher` and is it still used?

Reading some rather old computer books, I have seen the gopher protocol mentioned frequently. What is it used for? And, is it still used today?
5
votes
3answers
2k views

What are ports and protocols really?

I hear people talk about ports and protocols (in relation to computer networking), and they often provide analogies for them (for example: "a port is much like a shipping port, it sends and receives ...
2
votes
2answers
244 views

Is the sound quality of wireless earbuds inherently limited? [closed]

There are many different types of devices that emit sounds directly to the ear, ranging from the wired headphones often used by audiophiles —I presume— to the wireless earbuds often used ...
1
vote
0answers
219 views

Allow only HTTP/HTTPS comunication with Agitum Outpost Security Suite Free

Hi I use Agitum Outpost Security Suite Free and I would like allow only HTTP(80) a HTTPS(443) protocols for IN/OUT and also allow local ports for Oracle database, etc. I try use Network Rules -> ...
0
votes
1answer
124 views

IPv4 address to Netmask mapping and Multiple default routes feasibility?

We have, Class Range NetMask Bits Bits hosts# ---------------------------------------------------------- A 0-127 255.0.0.0 8 24 16777216 (i.e. ...
7
votes
4answers
2k 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, ...
2
votes
2answers
422 views

CSMA/CD network protocol (Ethernet)

I hope I'm in the right stackexchange subsite (can't seem to find a networking related subsite..). I've got 2 questions concerning the CSMA/CD network protocol: Before sending some (say 5) messages ...
1
vote
3answers
308 views

How do I forward TCP from one IP to another?

Here's a thing: I have a piece of software listening on 127.0.0.1:port and only (I can choose the port). I want it to work as a server and accept connections from outer network. How can I forward the ...
16
votes
5answers
56k views

how does 'ping' command really work?

How does the ping command really work? Specifically where does the ARP (Address Resolution Protocol) come into picture? I was asked this question in an interview and I was not able to come up with ...
0
votes
4answers
7k views

How do I “telnet into [my] favourite Web server”?

I'm reading a book about programming, and I want to check an HTTP response message. The book is instructing me to telnet into your favorite Web server. Then type in a one-line request message for ...
1
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3answers
3k views

Finding the external (PPPoE, WAN) MAC address of an ADSL router

My ISP is Orange Internet, I have recently ditched my crummy "livebox" and moved to a more stable BT Business Hub with the firmware flashed back to the original SingTel ROM. The thing works great ...
18
votes
5answers
14k views

Ethernet vs TCP vs IP?

What is the difference between Ethernet, TCP, and IP in simple (simple abstract) terms? Please do not copy from Wikipedia...
0
votes
3answers
61 views

How does the home wireless perform if it connects to a public access point?

Assuming that there is a access point(hotspot) covering a dozen of houses. Besides, these houses also have their own wireless network. So, if everyone in each house connect to the Internet at the same ...
0
votes
1answer
129 views

http in web browser address bar

If we type a domain name in a web browser address bar, how will it discover the correct protocol for that domain ? Example: If we type linkedin.com in a web browser address bar, how does it know to ...