Collaborate Disseminate
Attackers have seized on a relatively new method for executing distributed denial-of-service (DDoS) attacks of unprecedented disruptive power, using it to launch record-breaking DDoS assaults over the past week. Now evidence suggests this novel attack method is fueling digital shakedowns in which victims are asked to pay a ransom to call off crippling cyberattacks. Continue reading Powerful New DDoS Method Adds Extortion
This week’s DDoS attack against GitHub is a harbinger of attacks to come that will use the highly effective memcached amplification technique, say experts. Continue reading In Wake of ‘Biggest-Ever’ DDoS Attack, Experts Say Brace For More
This week’s DDoS attack against GitHub is a harbinger of attacks to come that will use the highly effective memcached amplification technique, say experts. Continue reading In Wake of ‘Biggest-Ever’ DDoS Attack, Experts Say Brace For More
Over the past few days researchers say DDoS attacks have been using memcached servers to amplify DDoS attacks using UDP-based packets. Continue reading Misconfigured Memcached Servers Abused to Amplify DDoS Attacks
Are there any negative security effects of setting the SO_BROADCAST option in a C UDP socket? I’m writing a C program and if I just set the broadcast option to 1 then all IP addresses work as intended, but if I don’t set it t… Continue reading Security implications of setting the broadcast flag on a UDP socket
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?
I just learned about IP spoofing and so I set up VMs and sent spoofed UDP packets (8.8.8.8, Facebook’s IP, Twitter’s IP) to myself (home PC and mobile) from well-reputed VPS providers like AWS, Softlayer, Intellectica Systems… Continue reading Why is spoofing allowed in reputed VPS services?
We currently have a server that blocks all connections using iptables, and we have to whitelist an IP expressly in order to be able to access the server remotely.
The current setup looks like this (simplified):
Chain INPUT … Continue reading Block TCP and UDP with iptables
I have flooded my server with tcp/udp (layer 4 and layer 7) packets in order to see how does it work and what data contains. When I checked the access.log I couldn’t find any data.
Any idea how to get those logs?
I have web… Continue reading TCP – UDP packets [on hold]
I have flooded my server with tcp/udp (layer 4 and layer 7) packets in order to see how does it work and what data contains. When I checked the access.log I couldn’t find any data.
Any idea how to get those logs?
I have web… Continue reading TCP – UDP packets [on hold]