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

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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 ...
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3answers
130 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 ...
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1answer
117 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 ...
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1answer
88 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 ...
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1answer
186 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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2answers
165 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 ...
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1answer
59 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(): ...
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179 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?
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1answer
51 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.
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107 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.
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76 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 ...
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1answer
61 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. ...
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2answers
382 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 ...
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1answer
98 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 ...
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12answers
25k views

Can I prevent my neighbors, whom I pay for shared internet (wifi), from seeing the sites I've visited?

I pay my neighbors to use their wifi. They have listed me as "guest" with a separate password from theirs. Is there any way to prevent them from seeing the sites I've visited? My browser history ...
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2answers
218 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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2answers
165 views

How common and how easy is sniffing plaintext communication?

So the first reason we give to encrypt content is to prevent against a man in the middle sniffing all data. That is the reason ssh is used and not telnet for example. But in today's networks where ...
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1answer
95 views

Anti-sniffer for USB [closed]

I'm looking for a Windows utility that can list all drivers, driver-filters, services, sniffers and other information for a selected USB port. I want to check if my "USB connection" is confidential. ...
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2answers
77 views

Is loopback interface protected from sniffing?

I'm trying to understand what are the risks derived from unprotected communications within the same device, by the use of the loopback interface. I've verified it is possible to capture packets, with ...
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3answers
910 views

How to use my WiFi to inspect its user traffic and to run MiTM attacks?

As part of a security research, I need to make my WiFi open, and to inspect the traffic of the ones who connect to it. Additionally, I need to be able to change the content of the webpages they see, ...
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1answer
234 views

Understanding Hearthbleed attacks [duplicate]

In order for a Heartbleed attack to happen and for someone to grab the SSL private key and even spy they have to be on the local network with a router, switch or server, correct? Or can this be done ...
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3answers
1k views

Can an attacker sniff physical network traffic through WiFi?

So, I am wondering - is it possible for an attacker to sniff traffic on an Ethernet connection if they are not physically plugged into the modem/router hardware but they are connected through wifi? In ...
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2answers
67 views

Proving SSL need

I need to prove the need we have to install SSL certificates in our webservers. For that I've been requested to try obtaining sample credentials (in lab enviroment) during a http authentication ...
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1answer
2k views

Sniffing WiFi with tcpdump on an iPad [closed]

I have tcpdump installed on my iPad which is connected to WiFi (WPA2). How do I capture packets sent/received by other devices on same network? UPD: iPad 1st gen, latest (5.1.x) iOS available.
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2answers
838 views

wireshark does't show HTTP requests from other devices

My machine along with several other machines are connected to wireless router. When i open some http page on same machine(M1) where wireshark is installed, it captures the packets such as HTTP GET or ...
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2answers
4k views

Sniffing, Snooping, Spoofing

Could somebody please explain me the differences between the following attacks? sniffing snooping spoofing My professors used them all in his documents, but I'm not sure, if those are 3 ...
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3answers
932 views

Do i need to have Airpcap?

Hi I am learning system security in an online course, in a practical experiment I tried to monitor the traffic through my router using wireshark1.10.3 but i have a feeling that it only sensing traffic ...
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146 views

Proxy traffic via MITM script

I want to log and modify outbound traffic on a Linux machine. I currently have one program that sends requests out to the internet, I would like to process these requests and their responses via ...
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3answers
286 views

Why can't someone break email or https encryption by somehow getting access to the encryption key?

To repeat, "Why can't someone break email or https encryption by somehow getting access to the encryption key?" In other words, why can't someone intercept the key, or the algorithm to create the ...
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392 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 ...
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3answers
167 views

If someone has access to VPN and your computer, is there a point of using VPN?

If someone sniffs requests coming from my computer and my VPN's computer, there's no point using VPN, right? Because they can see the time when I made a request to my VPN and they can analyze all of ...
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4answers
1k 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, ...
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332 views

how to find out if a program sends data to internet (without permission)?

We have an application to save our customers data (some kind of CRM). This application has been written in Delphi and is a client/server application. This program apparently is sending out ...
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560 views

Can Your ISP use a Packet Sniffer? [closed]

Can ISPs presumably use packet sniffing applications such as wireshark and monitor my unencrypted data? Are they "allowed" to do so?
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216 views

Fishy: VMware sends all traffic through akamai

I'm running Linux inside of VMware on the Mac, and on Linux I'm running a program that has connections open to perhaps 4 different machines. On the OS/X side however VMware has only 1 active network ...
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1answer
116 views

SSL and Strategy to prevent destination URL from being revealed

Googling the subject "sniffing out / spying on SSL secured communications" one finds many references to being able to make some good guesses about the "target destination" once the path length is ...
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1answer
156 views

Security implications for two applications communicating with TCP/IP on localhost

Considering this for the local loopback connection: - It is implemented entirely within the operating system's networking software and passes no packets to any network interface controller. If ...
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1answer
138 views

TCP IN connection from another user in my home network. Is it safe?

I'm using Comodo Firewall and I noticed that sometimes I'm getting TCP IN connection from another IP address in my home network (only one router and few wireless users): TCP IN | 192.168.1.50 | ...
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379 views

Is packet sniffing a risk on VPS? If so, what precautions should I ask my host if they take?

I'm wondering if packet sniffing is a risk on my VPS. Is it always a risk or are their precautions a host vendor can take? e.g. a switched network etc. If I wanted to ask my host what precautions ...
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3answers
2k views

Alternative to AirPcap for Linux?

I need to sniff WiFi packets, but according to AirPcap FAQ page, it just supports Microsoft Windows, not other platforms. Does any alternative of this product work in Linux? Please don't offer Alfa ...
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1answer
274 views

Can you sniff broadband connections? And how you secure that?

I know that you can sniff data which is transferred over wifi. Can you do that with broadband (wired)? And how can you secure the network, so nobody could sniff data both over wifi, and broadband?
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933 views

Sniffing From Squid SSL

I created a Squid proxy and a self-signed SSL certificate. The SSL certificate on the server is a private certificate linked to the ssl-bump feature. I am using tshark to dump the SSL traffic, but I ...
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2answers
977 views

Cain and Abel Sniffing vs APR

I have recently been performing a security audit at work (sanctioned of course) and have seen some interesting behaviour from Cain and Abel. I've purposefully avoided using APR so that my co-workers ...
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2answers
1k 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 ...
3
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1answer
463 views

I recently discovered that dsniff had been installed on my computer. What do I do?

I have recently discovered that a co-worker (who has sudo privileges on my machine) has installed dsniff, and it has been there for a while. I have no idea when they ran it (if at all), the only ...
3
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1answer
3k views

Which part of the eapol packets contain WPA password Hash?

I have captured wifi traffic from a WPA network using Wireshark. I filtered the results for "eapol" packets and noted in the info column there are message type 3 and type 1. I believe this is two ...
2
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1answer
472 views

Does Metasploit's packet sniffing run in promiscuous mode?

I'm doing an educational pen test exercise and I'm trying to sniff traffic from a compromised Windows machine. I've been using the post-exploitation sniffer and packetrecorder Meterpreter modules, ...
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2answers
7k 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 ...
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2answers
4k views

How to sniff Bluetooth traffic using Android?

I have two Arduinos using Bluetooth to communicate one with another. Is it possible to sniff the Bluetooth conversation between the two devices? An Android solution would be great, I heard of hcidump ...
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1answer
590 views

How to identify call stats about 2/3/4G users in a room?

If someone can please provide some advice about the following problem I am trying to solve it will be great. Scenario: A standard office room, with (say) a couple of people in it What I want to find: ...