A sniffer is a program that monitors and analyzes network traffic, detecting bottlenecks and problems.

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1k views

ARP-poisoning on wireless network - no packets

I've started working with ettercap and ARP-poisoning; however, I've sumbled upon some problems. I've executed the following command: ettercap -i wlan0 -w log -T -M arp:remote /192.168.1.254/ ...
5
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3answers
144 views

In a monitored network, can the admins tell if Tor is being used?

I'm not asking if Tor is secure, I'm asking if an observer can know you are using Tor? For example if a persons ISP or company network monitors traffic would they be able to determine with certainty ...
0
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2answers
83 views

Sniffer attack on mobile

I have Nokia lumia 625. And a guy hacked it using sniffer. That's how much I know about it. He has access to all my online texts(eg. Whatsapp, messenger etc) . and also to offline carrier text ...
2
votes
1answer
62 views

How can someone sniff dial-up connection using phone line?

Let's assume we have a computer that sends packets to the internet using dial-up connection, and we have access to the analog data on the phone line(we have access to the phone line), how can we make ...
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3answers
46 views

Is my company VPN the same as third-party VPN providers?

I'm just a bit confused with VPN. My company has VPN when I work remotely. So, I can access internal websites. However, does it mean if I browse my Internet over my company VPN, it will be as secured ...
3
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1answer
117 views

How to sniff [possibly encrypted] TDS protocol data from the host the client application is installed on?

Let's say, there is an .NET application on a windows 7 host where I have administrator's access rights. The application works with remote MS-SQL server which I don't control, it also seems that the ...
3
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1answer
78 views

Is it possible to sniff traffic of a remote network? (With admin access to router)

Me and a friend of mine are simulating a widespread scenario where router configurations are untouched (default passwords) and are visible from the internet. Him, acting as the victim, will constantly ...
32
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5answers
17k views

What is preventing us from sniffing the mobile phone communication?

I'm learning wireless penetration testing. It really is amazing. But it made me wonder, what about mobile phones? They are also means of wireless communication. So, our entire voice must be in the air ...
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1answer
110 views

Sniffing my networks traffic illegal? [closed]

So this is a pretty straight forward question. If I setup a free and open wifi access point called "Free&Tots-Secure" then sniff all the traffic of people that connect to it, does that violate ...
0
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1answer
168 views

WLCTL protocol detected by sniffer in an Android tablet

I detected that my rooted Android tablet had a slow connection. Trying to find what is taking the bandwith, I installed a firewall (DroidWall) and I blocked all the applications thinking that one of ...
26
votes
2answers
1k views

Can a connected USB device read all data from the USB bus?

Is it possible for a (malicious) (hardware) USB device to access all the data that is transferred through the USB bus and then read/store this information, essentially sniffing all transferred data? ...
3
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3answers
201 views

Is it possible to obtain the login credentials submitted by users?

It's a question at computer security textbook Assume that user A is about to use some website that requires login credentials. User A starts his web browser, types the website’s URL, and submits the ...
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4answers
2k views

Can anyone tell if a wireless router is plugged into an Ethernet port (without actually seeing it)

In a large network if there is an Ethernet port in the wall, is it possible to tell if a switch or wireless adapter is plugged into it? (I'm talking about the cheap home routers - with the built in ...
49
votes
5answers
35k views

Does https prevent man in the middle attacks by proxy server?

There is a desktop client A connecting to website W in a https connection A --> W Somehow between A and W, there is a proxy G. A --> G --> W In this case, will G be able to get the ...
5
votes
2answers
733 views

Facebook POST request capture

I have been trying to test a sniff on facebook POST request forms using wireshark (filtered HTTP). At login form, I would try login, and then check wireshark and see that no packet was captured. ...
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2answers
68 views

Suspicious SMS getting received on selected browsing

I am receiving several suspicious SMS messages with links telling me that I have requested subscription to their services (which I have not) asking me to confirm subscription. These SMS appear only ...
0
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4answers
108 views

Risks of using HTTP

What are the risks of using HTTP instead of HTTPS assuming that there isn't any rogue hacker sitting on my personal WIFI network waiting to sniff my traffic? Can a hacker sit in his boat in the ...
23
votes
6answers
3k views

Possibility to sniff HTTPS traffic on devices without installing a certificate

My goal is to sniff the HTTPS traffic of some digital devices (AppleTV, game consoles, etc.), and decrypt the HTTPS packets in my local network. I cannot figure out a way by using some HTTPS ...
0
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1answer
34 views

Browser Unable to Fully Authenticate HTTPS

I'm attempting to fully verify the HTTPS encryption using Chrome & Firefox but both browsers currently display the connection as 'including resources which are not secure'. I have tried using ...
0
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1answer
33 views

DNS resolution attacks by flooding spoofed replies

Each DNS request has an ID of 16bits. In the event that an adversary is unable to sniff the query, a way to spoof the DNS reply is to flood the resolver with many replies. Request from victim Query ...
0
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1answer
49 views

localhost to localhost ICMP traffic that is suspicious.. any idea of what is creating this?

I keep seen this on my tcpdump output.. is prob something very simple and logical but I can't see to see any process with lsof or netstat doing a ICMP request to it's own 127.0.0.1 every 2-3 secs... ...
14
votes
3answers
4k views

Smartphone / GSM Sniffer

This question would be in the category of SmartPhone Sniffers. So we have sniffers that can show the packets that are being sent across a wired or wireless (802.11) network. I am just performing a ...
0
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1answer
48 views

Is it possible to bypass sniffing when using port mirroring?

INTERNET <-A-> ROUTER <-B-> PC Let's theoretically think we mirror the port on a ROUTER to a file. So the full network traffic on it. Question: is it possible to still have ...
0
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1answer
87 views

Sniffing external networks from a public network (place)

There is something that I can not understand. If you are preparing, building up an attack from a public place (coffee shop, restaurant ect.). How can you be tracked by law enforcement? I'm asking ...
1
vote
1answer
87 views

Spying on insulated cables (electromagnetic/induction field)

I hope this is the right forum to ask this question. If not, please tell me where to go. From my understanding most cables have an electromagnetic field around them when data passes through them and ...
3
votes
2answers
263 views

How to secure a network (FTP connections) from sniffers

I'm actually working in a medium sized company with security concerns. Let me explain you my problem : The context: My office has one single internet line. This line is accessed by anyone in the ...
2
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3answers
222 views

promiscuous vs monitor mode in 802.11

I've been reading up on promiscuous mode and monitor mode as they relate to 802.11 networks. I understand the difference, which is explained here: What is the difference between Promiscuous and ...
0
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2answers
686 views

DNS Cache Poisoning as a Foil to SSL

I recently learned a bit more about DNS cache poisoning, and my understanding of the basic way it works is by editing the DNS cache so that when the victim types in, say, www.google.com they get the ...
22
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2answers
8k views

How is wireless WiFi password cracked?

Let's say I have a wireless network that is password protected. What procedures can an intruder take in order to be able to gain access to my wireless network, or at least be able to decipher the ...
8
votes
3answers
40k views

Can a hacker sniff others' network data over a wireless connection?

Provided that the hacker knows the WiFi password if any (WEP or WPA), is he capable of sniffing network data of other hosts connected to the same access point?
0
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1answer
52 views

sniff mobile application to find whether packages sent to the third person [closed]

I suspect that my messages via Viber are being sent to another person - because to my mobile have access a lot of people and it could be possible that somebody installed there some software or ...
1
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3answers
233 views

Doesn't seem to be able to capture the packets I need [ANSWERED]

I've been trying to capture Telegram messaging application's packets (for my class project) but I couldn't get anything out of the punch of captured packets I got. Telegram does AES-256 encryption ...
3
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3answers
1k views

sniff SSH password on the server

Is it possible on the server to log the password encoded by the remote user inside a log. I want to make a honeypot to see the type of user/password used.
2
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3answers
1k views

How to know what others browse through the network?

My friend connected to WIFI and after 5 minutes he told me which sites I had actually been browsing, and who I chat with. My question is: how do I defend myself against this, and also how did he do ...
0
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1answer
175 views

Dump SSL traffic from a Java applet

I have a smartcard that can be read by websites using a Java applet (see http://www.springcard.com/online/applet_pcsc/). I would like to monitor and is to replay packets going from this java applet to ...
2
votes
1answer
246 views

DNS packets during ARP poisoning

I carried out an arp poisoning attack from my virtual machine to real machine with cain and able and collected data with wireshark from real machine. While I was investigating data with wireshark I ...
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votes
3answers
243 views

How to capture the traffic of a computer in my LAN?

I have a machine with the Windows 10 preview installed and I want to capture all the traffic it sends for a day and then block all the MS hosts it sent data to without my direct permission. I don't ...
4
votes
4answers
18k views

Is there a way to sniff packets of a remote IP address?

I would like to know if sniffing packets of a remote IP address is possibole at all, if yes i would like to know : what is the success rate, i mean by that how much percent of the packets you would ...
0
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1answer
244 views

Can anyone with access to root CA private key decrypt HTTPS traffic?

Can anyone with access to root CA private key decrypt HTTPS traffic of sites using certificate signed by that CA ? and if yes do he need to be man-in-the-middle or just monitoring traffic is ...
3
votes
3answers
291 views

How to sniff a data from an upstream router?

I am connected to my router and I want to know if it is a possibility to sniff a data from a router that is over my router?
8
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4answers
2k views

How to check if wifi is safe while travelling?

I'm quite a bit of a traveller. So i tend to just stay with my smartphone and sometimes notebook. I'm not a security expert but i would like to check how to know if wifi is safe to use. For example, ...
0
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2answers
262 views

Hacking machines using internet packets [closed]

I have a friend (X) who hacked the whatsapp account of someone (Y) using iphone. He told me that he sent a packet to the iphone of Y that appears as a normal whatsapp message but now he can see all ...
1
vote
1answer
201 views

Etterfilter file-contents injection

On the etterfilter(8) man page, there is a section about the inject() function, which takes the contents of a file and injects it in a packet, or as its own packet when coupled with drop(): ...
0
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2answers
427 views

honeyd is still a good alternative?

I've been investigating to deploy a honeypot for research purpose, Honeyd seems like the most popular and adequate option to my needs, but it seems too old, the last version of this software was ...
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votes
1answer
56 views

Why does the router fall when performing ARP Poisoning?

I am using dsniff and ettercap and when I start ARP Poisoning the router falls. Why does that happen? I think I might be overwhelming it or there is a problem with the router.
0
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3answers
178 views

How can I detect OS by sniffing network traffic?

Is it possible to sniff a network (WLAN) and find out what operating system are installed on network clients (PCs/Phones etc)? I am using Ubuntu.
0
votes
0answers
165 views

Mobile traffic sniffing using Cain

As far as I know - and please correct me if I'm wrong - Cain does not support WiFi cards. So if an attacker wants to perform ARP poisoning without being connected through Ethernet to the ...
3
votes
1answer
88 views

Sniffing 2400bps v22bis modem traffic

I am working with alarm signalling systems at the moment, and they communicate with 2400bps v22bis modems. I would like to be able to intercept the traffic on the phone line as a proof of concept. ...
2
votes
2answers
817 views

How to sniff email with https on Windows? [closed]

I am working now on Windows 7 and I want to see if I can sniff an email content on it with Wireshark. So all right with http but with https I can't at this moment and I don't understand how. You ...
0
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1answer
242 views

Sniff email content inside network [closed]

I use Cain and Abbel and I want to see the email content. If you help me becouse I don`t know to see the content. I see the email in the section password but I need to see the email content . I can ...