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0answers
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Shiffer software with custom protocol parsing ability on Windows?

Suppose I wish to sniff my network traffic with some conventional software, but the protocol I wish to analyze is custom. Which software allows to write plugins or something to parse custom protocol ...
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3answers
39 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 ...
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3answers
92 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 ...
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1answer
65 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 ...
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1answer
93 views

Can two network adapters work in different IP protocols simultaneously?

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 ...
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0answers
31 views

My LLTD shows my network wrong

I have 7 ult on two computers one is a hard wired tower, the other is a wireless laptop. My network should look like the following: {Tower wired to Router with WIFI > Internet NAS storage wired to ...
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1answer
24 views

Implementation of protocols

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 ...
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4answers
301 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 ...
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2answers
102 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.
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1answer
1k 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.
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2answers
20 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 ...
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2answers
124 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?
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2answers
154 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 ...
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0answers
54 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 -> ...
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1answer
54 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. ...
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4answers
214 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, ...
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2answers
121 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 ...
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3answers
131 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 ...
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4answers
2k 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 ...
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3answers
885 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
883 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 ...
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3answers
1k 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...
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3answers
55 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 ...