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1
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2answers
64 views

How eavesdropping attack takes place in network

I am learning some concepts of network security and I have the following question: One case of eavesdropping attack is that an adversary somehow places himself inside a network to order to capture ...
0
votes
1answer
53 views

Transfer of packets in a VPN connection

I am trying to figure out how a computer communicates with a website when using a VPN connection (specifically, how packets are transferred) as compared to a computer that's not using a VPN ...
1
vote
1answer
20 views

How can I put in relation http timestamp with country time zone of the IP?

I have a series of packets within a PCAP files, among them I'm getting packet with HTTP protocol. starting from IP address I get the timestamp in GMT format and the time zone, for example: Source ...
1
vote
1answer
47 views

Scapy WPA2 packet forging

Can I use scapy to forge custom packets on WPA2 network? Can I even pack the IEEE 802.11 headers?
1
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3answers
157 views

Deep Packet Inspection SSL : How DPI appliances prevent certificates warnings?

How Deep packet inspection (DPI) tools prevent from certificates warnings through decrypt and re encrypting packets ?
12
votes
4answers
2k views

How was (is?) the ping of death attack possible with IPv4?

While reading about Internet Protocol, I found myself reading about ping of death attacks: the thing that attracted my curiosity was the fact that these attacks could ever work! I mean, why wasn't ...
0
votes
2answers
167 views

Spoofing TCP/IP stack OS Fingerprinting attacks in OSX

We need to change our OSX fingerprint in order to impersonate the Android OS against "passive OS fingerprinting" attacks. For Windows machines there are tools/guides for doing that, but can't find ...
8
votes
1answer
165 views

Can ICMP Redirects still be used to redirect traffic in a LAN?

I tried just tried to migrate a MITM attack using hping3 with ICMP Redirects in my testlab. hping3 -I eth0 -C 5 -K 1 -a 192.168.2.1 --icmp-ipdst 192.168.2.15 --icmp-gw 192.168.2.100 --icmp-ipsrc ...
1
vote
1answer
57 views

TLS 1.2 mutual authentication certificate based standard

I'm running an analysis on a TLS1.2 mutual authentication certificate-based client-server implementation and I'm wondering if there's a RFC or a reference document covering the handshake process when ...
4
votes
2answers
40 views

Sandbox/Capture Outbound Traffic

Does anyone know of a program/system that is purpose built to allow you to sandbox/contain an outbound connection from a windows PC? (The aim being that you can analyse the data being sent via the ...
0
votes
1answer
34 views

Entropy on payload

How can I guess if a payload is obfuscated or encrypted? in other words can I apply Shannon Entropy algorithm to a binary payload? any advice will be appreciated, thanks in advance
2
votes
1answer
120 views

Capturing (1x Only) HTTP POST Request [tcpdump]

Every now and then; I like to fire up tcpdump and just watch the network traffic as the packets flow on by. For example: user@host:~$ sudo tcpdump -Aevvv Will parse & print all local ...
8
votes
1answer
386 views

Is Bluetooth 4.0 traffic encrypted by default/design?

I wonder if the BLE (v4.0) traffic is encrypted by default or by design, or is it just optional? If the former, is the traffic encrypted using a key derived just from the pairing pin or is there some ...
2
votes
2answers
36 views

Profile applications from traffic analysis

I'm investigating options for segmenting a less secure business unit behind a Cisco 5505. I want to take this action quietly and transparently for political reasons. I want to know if it is possible ...
2
votes
1answer
81 views

Why are packets constantly being sent to international ISPs?

When using a packet sniffer, I notice a lot of packets being sent to a bunch of ISPs (such as axion.ca, wanadoo.fr/orange?, bresnan.net, zebra.lt) usually all at the same time. Here's a screenshot of ...
2
votes
1answer
909 views

Failure to capture any packets on wlan0 in monitor mode

I have read a lot of Q&As that have achieved success in packet captures of Wifi probe requests, which entails capturing IEEE802_11_RADIO (802.11 plus radiotap header) in monitor mode. But I find ...
2
votes
2answers
94 views

Could anyone technically see my requests with TOR if the person has access to my router?

I was wondering if someone could sniff the packets I send via my computer with something like Wireshark I guess even if I use TOR and the person could access the router like stated.
7
votes
3answers
2k views

Windows: unknown program/service etc. sends HTTP request to download a file; how can I find the origin of that request?

The firewall of my company has detected and blocked a repetitive (every 15 min) HTTP request from a PC, which tries to start a download of a file called ..._chrome_installer.exe(or so) from the host: ...
4
votes
2answers
154 views

Malware / vulnerability that uses or causes malformed IP or TCP Headers

I'm curious if there are any examples of malformed IP or TCP headers (for example, checksums that don't match, reserved bits that aren't zero, or poor header length numbers) used by malware, or that ...
27
votes
4answers
4k views

What layer is TLS?

TLS stands for "transport layer security". And the list of IP protocol numbers includes "TLSP" as "Transport Layer Security Protocol". These two things would leave me to believe that TLS is a ...
1
vote
1answer
67 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 ...
1
vote
0answers
14 views

Probabilistic packet marking content ID field

For Above image: All routers are using PPM. What will be the content ID field if 1) R1 = mark packet, R2= Mark packet, R3 = Not mark the packet. 2) R1 = Not mark packet, R2= Mark packet, R3 = Not ...
1
vote
0answers
211 views

Perform SSL MITM -> Decrypt packet -> Modify packet -> Encrypt packet -> Send it [closed]

I have a victim and a server. My goal is to intercept traffic, perform SSL MITM, decrypt packet, modify it, encrypt and send it further. Everything has to be on-the-fly and protocol agnostic. For now ...
-2
votes
1answer
139 views

What would a typical packet of a DDOS attack look like? [closed]

In terms of header, size and payload? We've been learning about DDOS attacks in class and they've been telling us all of the abstract ideas, but haven't told us what the actual makeup of the packets ...
3
votes
1answer
271 views

RSnake's Slow Loris tool

I was looking at RSnakes implementation of his Slow Loris done on perl which can be seen here. I set up a little server to listen to his packets, and at first found this GET / HTTP/1.1\r\nHost: ...
-1
votes
1answer
125 views

Slow internet - Worried about spammed packets

got a weird question and I'm not sure if I should even post this on here but I couldn't think of anywhere better to ask. Lately, I've been getting some internet speed issues. I closed literally every ...
1
vote
0answers
177 views

Snort rule for outgoing attacks [closed]

I have a pcap file captured from a user PC. I need to analyze whether it has initialized a DOS attack to any server. alert tcp any any -> any 8080 (msg:"DOS flood denial of service attempt"; ...
0
votes
1answer
1k views

How to run a snort rule over pcap file

I have a pcap file, and what I wanted to know is how can I apply the Snortrule below which I've already written within the rules folder in my log folder: alert icmp any any -> any any (msg:"TCP ...
-1
votes
1answer
2k views

Interpreting anti-hacker-alliance analysis [closed]

One of security tools available for web browsing is (http://anti-hacker-alliance.com) Please find below two readings: a) Reading for IP 205.x.x.x that state among other-things "you are using proxy ...
-1
votes
2answers
2k views

How to make Reaver crack WPS faster [closed]

I have Reaver 1.4 on Ubuntu 14.10 with a Realtek RTL8187SE B/G adapter and it takes almost 5-10 minutes to get from 0.01% to 0.02%. I always have my TX-Power at 30 when I use Reaver, the network is ...
1
vote
2answers
92 views

Is it secure to split information into multiple packets?

I just stumbled upon this SO question. I was wondering if it would be still secure to split the encrypted packet into multiple packets, which are then transferred over the wire separately. Could ...
1
vote
2answers
1k 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 ...
1
vote
2answers
315 views

Limit Packets Per Second

Since last week I have been seeing something fishy and it seems to be worsening. I tried many firewalls and they seem to be useless. I blocked all unwanted ports and only few ports are open so I found ...
1
vote
2answers
264 views

Send fake response(?packets) to a program [closed]

So my idea was.. There is a program that require login to be able to use(the program should work offline aswell not requiring any online data), so i want to make that program to be able to run offline ...
0
votes
1answer
190 views

Firewall with packet capture and inspection?

Is there such thing as a firewall with packet inspection? Most outbound firewalls simply prompt the user with "program.exe is trying to connect to the internet - allow or deny?". I find it impossible ...
1
vote
2answers
313 views

Force connected devices to use http rather than https

I am very new to MITM attacks and have been faffing around on my home network today.. When sniffing my iPhone trying to connect to some mail accounts I have noticed that it shows a message stating ...
0
votes
1answer
293 views

Firewall log entry: need help in interpretation

I recently setup an Hardware UTM Firewall. The firewall log shows the this entry every 20 seconds: /var/log/packetfilter/2014/09/packetfilter-2014-09-30.log.gz:2014:09:30-12:06:15 utm ulogd[11342]: ...
0
votes
1answer
386 views

Why can't all wireless cards perform packet injection?

If a wireless card can send packets, why can't it inject packets? All have to do to inject a packet is create a raw socket, construct a packet with the spoofed headers and then send the packet ...
3
votes
2answers
707 views

Packet Checksums

I recently learned that every packet includes checksum bytes and that the computer will request the packet again if the checksums don't match. How do the following attacks defeat such a safeguard? ...
0
votes
2answers
296 views

Wireshark displays sql calls - Prevention

So I was analysing a new application that is being written. I noticed that on the app server level there are sql calls that are being made from C# code. These calls can be seen in wireshark by ...
1
vote
2answers
44 views

Several processes are listening to the same interface: any problem?

I wonder if some processes may get less packets than others if they are all listening to the same wireless interface. I'm running for example the basic mitm schema using arpspoof, sniffing packets ...
0
votes
2answers
423 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 ...
0
votes
1answer
133 views

Can I broadcast packet to a public ip? [closed]

I have seen that x.x.x.255 is reserved for broadcasting. Is it only work for broadcasting to the computer which connected to the same router? Can I broadcast to public IPs?
1
vote
2answers
1k views

How to remove tcp header of packets captured with dumpcap?

The traffic from Wireshark saved into a file with dumpcap. In this file a have for example : € X `þ $À6 @ íëÃNxXÀ¨£ P&E»kKí¨<`PEà; HTTP/1.1 200 OK Cache-Control: private And I ...
0
votes
1answer
522 views

Block specific packets/sequences of packets to remove disturbing client “feature”

Recently, one of my client-server application started to disturb me with some very annoying "notifications". Basically, what happens is that the remote server sends a few packets to my client, which ...
0
votes
2answers
250 views

Solution for traffic capturing from router

i'm a newbie and i'm having a problem that i can't find it by google. I'm researching abbout DDoS detecting method now. As we can see that nowadays people often analyze networking traffic from router ...
2
votes
1answer
306 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 ...
23
votes
1answer
1k views

Does TCP/IP protocol offer a reliable way of determining who the actual sender was?

So I'm just poking around the TCP/IP protocol using a Ruby library called PacketFu, and it seems to me that in each packet, it is possible to set all of the following Source IP Destination IP Source ...
0
votes
1answer
151 views

How to log packets which are allowed by SNORT?

Suppose i have not written rule for a type of attack in SNORT; It is obvious that it wont show any alerts. I wanna develop a system wherein i capture packets that SNORT allows n do further processing ...
1
vote
3answers
267 views

Is there a way to get information out of the router [closed]

Is there any way (directly from a computer or device) to see the packets that pass the router from the different devices. Thanks.