Collaborate Disseminate
I was reading scapy 3.0.0 documentation and saw this line of code.
>>> Ether()/IP()/IP()/UDP()
<Ether type=0x800 |<IP frag=0 proto=IP |<IP frag=0 proto=UDP |<UDP |>>>>
This seems to mean t… Continue reading Two IP packets inside one Ethernet frame? [on hold]
Would a packet sniffer like tcpdump be effective for network host discovery and if so how effective is it compared to more active methods such as the infamous network mapper nmap?
Continue reading Is using a network sniffer for host discovery a viable option?
By David Balaban
VPN is a wonderful thing that you all have probably heard about. I assume it was something like this: “Using a VPN you can visit websites blocked by state services and engage in any network activity without fear of revealing your actua… Continue reading Understanding VPN through open systems interconnection model
I have a proxy server on the WAN as well as my box open to the WAN. I want this proxy server to (when it receives a shell), route it to my host so it can be the “man in the middle” between my connection with the target.
I know that they can detect traffic by rules, but can they modify packets on the go?
For example, not only detecting HTTP GET but also adding headers to the GET packet.
If they can’t, is there an open source program that ca… Continue reading Can Snort or Suricata *edit* packet on the fly?
Finally, while the IP header contains a noncryptographic checksum for
verifying the integrity of the header, there is no attempt to do the
same for the payload.
Source(Introduction to Computer Security by Michael_Goo… Continue reading IP suite packet integrity
There’s something thrilling about decoding an unknown communications protocol. You start with a few clues, poke at the problem with some simple tools, and eventually work your way up to that first breakthrough that lets you crack the code. It can be frustrating, but when you eventually win, it can be very rewarding.
It seems that [Jason] learned this while decoding the wireless conversation between his mass-market quad and its controller. The quad in question, a Yuneec Q500, is one of those mid-range, ready-to-fly drones that’s targeted at those looking to get in the air easily and take some cool …read more
Continue reading Drone Gives Up Its Wireless Secrets To Zigbee Sniffer
I’m new to inspecting packets with Wireshark so this might be something very stupid on my part. That said, I don’t really understand the transaction between my computer and my Roku.
17 1.129097 192.168.1.70 192.168.1…. Continue reading Why is my computer making requests to my Roku about spotify?
Context:
This a question from my homework assignment.
There is a company with two sites A and B.
B is behind DMZ (firewall – proxy mail server – firewall)
and A is just behind a firewall
Network A – Firewall – Internet – … Continue reading Distributed network with one host behind dmz and the other without
We have an internet-facing router and it is significantly slowed down. We investigated the network traffic and came up with following information:
All the packet size is same (i.e. 40 bytes)
All different source IPs
Source … Continue reading Please help diagnose multiple incoming packets