Kentik

APRIL 19, 2023

The CDN and the ISP peers over an IXP, the volume drives port upgrades, and private connections are impossible. Removing traffic from the edge will save money on transit and IXP port fees and lower the risk of congestion. There are more efficient ways of operating DNS resolvers, so are there any workarounds available?

IP Address 52

IP Address DNS Server Network 52

Kentik

MARCH 13, 2019

The victim can update DNS to point at a different IP address in an attempt to get their application back up. However, if the attack is targeting the DNS hostname and not the IP address, the attack will just switch over to the new IP address. IP Protocol. Destination port. Source port. Destination Prefix.

IP Address 49

IP Address Port Routers DNS 49

Kentik

JANUARY 11, 2016

First we’ll look at what protocol the traffic consists of. So next, to shed further light on the nature of the DDoS attack, we want to know the port that this UDP traffic is aimed at. To see that, we go back to the Metrics menu and choose Destination » Port. We can do this in multiple ways. Conclusion.

Port 40

Port Network Networking UDP port 40

Kentik

MARCH 28, 2016

How flow protocols adapt as network needs evolve. But while NetFlow and its variants like IPFIX and sFlow are similar overall, beneath the surface there are significant differences in the way the protocols are structured, how they operate, and the types of information they can provide. More of a good thing. Templating pros and cons.

Protocol 40

Protocol Routers MPLS IP Address 40

Heroku

NOVEMBER 21, 2024

is subject to automatic load tests that run continuously, at varied request rates, body sizes, protocol versions. Once that timeout is hit, the socket is reclaimed and the router is free to re-use the address + port combination for a new connection. In staging environments, Router 2.0 The Linux default is 2 minutes. Not so fast.

Routers 59

Routers TCP Server DNS 59

Kentik

NOVEMBER 23, 2015

A growing percentage of attacks are reflection and amplification attacks using small, spoofed SNMP, DNS, or NTP requests to many distributed servers to bombard a target with the much more bandwidth-heavy responses to those requests. So next we’ll look at the protocol and destination port # of the traffic.

IP Address 40

IP Address Port Protocol Internet 40

Kentik

JULY 28, 2021

Latency : Missing packets in connection-oriented protocols such as TCP and QUIC result in lost packets getting resent. Bad hardware (the switch or router port). You have to remember that ping rides on top of ICMP, and in a congested network it is one of the first protocols to get dropped by a busy router. Overwhelmed router.

Cloud 116

Cloud TCP Routers Protocol 116

CloudFaire

JANUARY 21, 2025

They are part of the HTTP protocol and allow communication between clients (such as browsers) and servers. HTTPS in legitimate traffic and DDoS attacks: 2024 Q4 Layer 3/Layer 4 DDoS attacks The top three most common Layer 3/Layer 4 (network layer) attack vectors were SYN flood (38%), DNS flood attacks (16%), and UDP floods (14%).

IP Address 121

IP Address Network Networking Server 121