Collaborate Disseminate
The capture file if needed
There is supposed to be abnormal behaviour here, and I see that there is. But I can’t figure out what it is.
There is no response from the ICMP requests. Furthermore some packets have the warni… Continue reading I can’t figure out the abnormal behaviour from this Wireshark capture file
It may be the middle of Summer but there is a lot going on with Azure, this is what you need to know about Azure for the month of July.
The post Everything You Need to Know About Azure Infrastructure – July 2019 Edition appeared first on Petri.
Continue reading Everything You Need to Know About Azure Infrastructure – July 2019 Edition
I was recently looking at a network in which the client-machines could access a webservice endpoint but could not ping it.
And there are other machines that can ping the webservice endpoint, but which do not utilize it. However, these othe… Continue reading In what situations should a node ping/not ping?
I’ve recently started working as a security auditor and my mentor gave me some homework to write an Ubuntu security audit script so that I’ll get to learn to use batch scripting and understand auditing in depth.
I got to the… Continue reading Security auditing – disabling IP forwarding and ICMP packets redirects
Apple has fixed a serious vulnerability in macOS and iOS that could allow hackers to compromise devices over the local network by sending them a single malformed Internet Protocol (IP) packet. The remote code execution flaw, identified as CVE-2018-440… Continue reading Flaw Allows Hacking Macs, iOS Devices with Single Network Packet
We’ll go out on a limb and assume that anyone reading these words is probably familiar with the classic ping command. Depending on which operating system you worship the options might be slightly different, but every variation of this simple tool does the same thing: send an ICMP echo request and wait for a response. How long it takes to get a response from the target, if it gets one at all, is shown to the user. This if often the very first step to diagnosing network connectivity issues; if this doesn’t work, there’s an excellent chance the line is …read more
On internet I found this command netstat -p icmp6 -s which can dump how many mld query is received by kernel. But I have busybox for my linux and because of this I am unable to run netstat command. Is there any alternative to… Continue reading How to check whether kernel received mld query or not? [migrated]
How can we measure the efficiency of the flood technique? Will it be by the number of bots required for flooding the link? In case of UDP and ICMP, which one would be more efficient and why?
A Ping of Death attack is a denial-of-service (DoS) attack, in which the attacker aims to disrupt a targeted machine by sending a packet larger than the maximum allowable size, causing the target machine to freeze or crash. T… Continue reading Is ping of death attack specific to ICMP or could it also happen with other transport protocols?
I’m investigating a server that pings throughout the day to random IPs on the internet. I set up IPtables to log and drop (INPUT & OUTPUT) packets but I still see icmp traffic on the network firewall. I can’t seem to trac… Continue reading Investigate compromised Linux server