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Messages - kondziorek

Pages: [1] 2 3
1
Security / Re: LAN security and sniffing
« on: December 12, 2015, 08:54:08 pm »
No no, everything is connected to one switch and there's no Hub.


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2
Security / Re: LAN security and sniffing
« on: December 12, 2015, 09:48:22 am »
Ok Mark, I'll find out packet sniff at Monday. And I'll let you know.


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3
Security / Re: LAN security and sniffing
« on: December 11, 2015, 08:36:39 pm »
I attach explanation from one page

"Each serves as a central connection for all of your network equipment and handles a data type known as frames. Frames carry your data. When a frame is received, it is amplified and then transmitted on to the port of the destination PC. The big difference between these two devices is in the method in which frames are being delivered.

In a hub, a frame is passed along or "broadcast" to every one of its ports. It doesn't matter that the frame is only destined for one port. The hub has no way of distinguishing which port a frame should be sent to. Passing it along to every port ensures that it will reach its intended destination. This places a lot of traffic on the network and can lead to poor network response times."

I mean frames in switch are like multicast,unicast. Frame is delivered  from one PC into another PC that is connected to port in switch.

Meanwhile hub is like broadcast,  it handle frames to all ports.

I believe when we've got a switch it is impossible to sniff, hear frames, packets, using Wireshark because you're not a receiver.

Conrad

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4
Security / Re: LAN security and sniffing
« on: December 11, 2015, 02:05:21 pm »
All 10 PC's are connected to management switch Netgear,

Technically is it possible to sniff packet that not directed to you?
For example I'm 192.168.100.12
And other 2 PC(for example192.168.100.20, 192.168.100.21)that communicate each oder(by telntet)  excluding me.
You know I don't take part in communication between them.
As we know switch for example get packet from 192.168.100.20 and has to sent it to receiver.

So I suspect that's impossible to sniff packet that's not directed to you, in case when you've got a hub that would be possible because it sends packets to everybody.
Am I correct?  :)

Conrad

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5
Security / LAN security and sniffing
« on: December 11, 2015, 07:35:49 am »
Hi Everyone,
I don't know if that's proper section of forum, but to the point.

Yesterday I used 2 computers to make telnet connection in school. They were next to each other. IP 192.168.100.12 192.168.100.13

I launched wireshark and I wanted to see telnet packets and It worked I saw commands I typed :)

But, Is it possible to sniff these packets by another computer in classroom for example 192.168.100.20(which is at the end of the classroom)

I think that would be impossible because There is a managed switch, as we know switch sends packet to destination port unlike Hub that directs packet to all ports.

Could anyone give an opinion?

Conrad

6
General Discussion / Re: IT branch
« on: October 20, 2015, 01:24:17 pm »
I thank you for interesting  sophisticated conversation.
Then we can close this topic, because everything has been explained :)

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7
General Discussion / Re: IT branch
« on: October 20, 2015, 11:08:46 am »
I am sorry, I didn't realised work as a programmer.

Some say
for example my friend says "don't go to admiration go to programming that's the future"
What do you think of that?  I should forgot about that and do what I want to do, and don't look at earnings, stories.

More over how about with knowledge, What an administrator should know?

For example you employ an administrator, and what do you except, require from him?

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8
General Discussion / Re: IT branch
« on: October 19, 2015, 02:46:10 pm »
Ok, how about with knowledge, What an administrator should know?
I think he should know very well server's systems , networks, hardware etc.
 But what else should he know as well?

For example you employ an administrator, and what do you except, require from him?

 Meanwhile as a programmer, you only have to know c++ or java :)


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9
General Discussion / Re: IT branch
« on: October 16, 2015, 03:41:52 pm »
Personally I prefer administration  to programming,
but will it make sense anymore in the future? I mean job as an IT administrator.
You know today's we've got easy to setup devices. GUI systems, devices where you "click click " for example good thinking person, programmer don't need an administrator to help, then demanding in that branch is going down. I am right?
-What do you think about that?

If you didn't understand  I'll correct my question :)

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10
General Discussion / IT branch
« on: October 15, 2015, 06:41:53 pm »
Hi,
I am Conrad
I've got off-topic question.
If that's wrong department of the forum I apologize.
Sorry for my English :)  that's not my native language.

But to the point,
What branch of IT is better to choose?
because actually I am confused.

Take for example IT administrator (systems, servers networks etc.) ,
will it make sense anymore in the future?

You know today's we've got easy to setup devices. GUI systems where you "click click "

I'm keen on servers switches, but I'm not sure about vacancies in that branch in the future. (now I'm in second class technical school).
I also tried php and c++ , in this branch though is more offers of work and you can promote easier.

I also add that I spend lot of time learning myself, due to teacher's incompetence.
but I am glad when I understand something alone, myself.

Could anybody give an opinion, and some advice? :)



11
General Help & Advice / Hydra shows "Warning..."
« on: September 22, 2015, 11:28:19 am »
Hi,
I haven't written here for a long time :)
I tried to test my router's security I mean nickname and password to router's page.

I got some info about hydra, brute force.
I downloaded dictionaries (.txt) with  passwords as well.

In terminal I wrote "Hydra -L file.txt -P file.txt -f -V 192.168.1.1 http-get /

I also add that I have tplink router model WR740N.
After I typed command and clicked enter I got many stanzas "Warning unusal return code for adminassword"
I think hydra reads my passwords from file because I saw words from file.txt but I'm not sure if protocol (http-get)  and page / are writed correctly.

Any another idea? :)

12
General Discussion / Re: Sections in repositories
« on: July 28, 2015, 08:43:21 am »
Okay, that's exactly what I need.
Topic is solved :)

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13
General Discussion / Sections in repositories
« on: July 27, 2015, 07:54:25 pm »
Hi guys,
I've read debian repository article.
I've just wondering, what does mean each option in repositories.
Actually I mean 'main contrib non-free'
As I know 'main' mean packages with open source code.
'Non-free' packages with closed source code.

-But How about with 'contrib' , is it related in any way with non-free and main?
Did I understand that properly?
If no, Please correct me.
Thanks in advance.

14
Security / Re: Security in Android apps
« on: July 14, 2015, 01:37:25 pm »
Ok, thank you for advice.

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15
Security / Re: Security in Android apps
« on: July 14, 2015, 12:08:28 pm »
Ok, tell me something else.
Is worth to use VPN app?  like "ZenMate" on Google Play. Or that's a rubbish thing?


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