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

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61
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6answers
42k 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 ...
-2
votes
1answer
74 views

Why does the router fail when performing ARP Poisoning? [on hold]

I am using dsniff and ettercap and when I start ARP Poisoning the router fails. Why does that happen? I think I might be overwhelming it or there is a problem with the router.
1
vote
3answers
152 views

Sniffer attack on mobile [on hold]

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 ...
1
vote
3answers
67 views

Sniffing traffic on a secured wifi connection

Open wifi is a security risk since all the data can potentially be sniffed by anyone. What I want to ask is even on a secured wifi (which requires some kind of password for authentication), the data ...
3
votes
1answer
156 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 ...
1
vote
1answer
29 views

How can this kind of attack be countermeasured by using a sniffer?

As an IT admin, what can I do to countermeasure an attack performed like this page explains? http://www.pivpn.net/2015/08/hide-your-ass-hide-by-mac-address-and.html What they do is to put a raspberry ...
6
votes
2answers
310 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 ...
2
votes
4answers
129 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 ...
2
votes
1answer
86 views

Sniff LAN SSL requests

When I log in into Facebook, using Wireshark in the same machine, I can read the request data in plain-text. That doesn't happen when I'm sniffing my LAN: I can read the SSL packets but they are ...
2
votes
1answer
229 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 ...
5
votes
6answers
13k views

monitoring outgoing network traffic [closed]

The graphs for one server that I am using are showing consistent 7.5 kb/s outgoing network traffic that started a few days ago. How can I monitor/log/capture/analize this traffic to see what is it, ...
10
votes
1answer
7k views

Mobile numbers capture and transmit data

will it be possible to build a low cost hardware/software device which can capture mobile numbers within a specified radius and then use that information to transmit an sms to those numbers? From what ...
1
vote
1answer
47 views

Padding of 802.11 packet with 0's in libpcap [closed]

I am trying to send probe request to Access Points.But whenever I send a probe request packet it is padded with 0's i.e I see two packets on wireshark for every packet I send : a non-padded packet and ...
4
votes
1answer
141 views

Man in the Middle Attack against NTP

So, lately I've been really into penetration testing and learning the nitty-gritty of tech. I'm dong courses on computer architecture, cryptography, surveillance law, and computer networks. I never ...
22
votes
2answers
9k 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 ...
2
votes
0answers
51 views

How do I sniff Z-Wave packets with a Zulu Transceiver [closed]

I'm trying to sniff the communication between Z-Wave devices. I have set up a "smart home" consisting of a few devices using Z-Wave technology, which use the frequency 868 MHz. I have been told that ...
4
votes
1answer
173 views

Decrypting TOR traffic?

Is there any way to decrypt tor traffic from an exit node or relay? I know it's possible to analyze the traffic using something like tcpflow or tcpdump, but it comes back as encrypted giberish. Is ...
1
vote
0answers
49 views

Rebuilding images from raw traffic [closed]

I've got a tcpflow log file that has the following: HTTP/1.1 200 OK Server: nginx Date: Sat, 20 Jun 2015 02:49:29 GMT Content-Type: image/jpeg Content-Length: 12177 Last-Modified: Wed, 10 Jun 2015 ...
3
votes
4answers
219 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 ...
1
vote
2answers
112 views

Promiscuous mode and packet sniffing

Is it must for a packet sniffer to enable promiscuous mode?Can packets be sniffed without the NIC being in promiscuous mode? Also when in promiscuous mode the NIC accepts all packets which are not ...
2
votes
2answers
249 views

Defence against promiscuous detection techniques

As an attacker,how do I prevent people from finding out that my NIC is in promiscuous mode? For test like ARP and DNS how do I defeat the users detection mechanism?
5
votes
1answer
2k 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/ ...
2
votes
1answer
90 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 ...
1
vote
3answers
68 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 ...
34
votes
5answers
19k 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 ...
-1
votes
1answer
186 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 ...
26
votes
2answers
2k 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
votes
3answers
279 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 ...
2
votes
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 ...
5
votes
2answers
1k 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. ...
0
votes
4answers
131 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
4k 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
votes
1answer
46 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
votes
1answer
46 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
votes
1answer
81 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
5k 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
votes
1answer
63 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
votes
1answer
143 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
145 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
304 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
votes
3answers
559 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
votes
2answers
843 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 ...
10
votes
3answers
45k 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
votes
1answer
84 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
vote
3answers
465 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
votes
3answers
2k 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
votes
3answers
4k 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
votes
1answer
215 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
294 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 ...
-3
votes
3answers
326 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 ...