PUSH floods and ACK floods are
denial of service attack
In computing, a denial-of-service attack (DoS attack) is a cyber-attack in which the perpetrator seeks to make a machine or network resource unavailable to its intended users by temporarily or indefinitely disrupting services of a host connec ...
s based on the PSH and
ACK flags.
Since these flags require additional processing it may be possible to overwhelm a service by setting these flags on numerous requests.
Mitigation
Proxy filters may drop appropriate packets with these flags set when the system is considered to be under attack.
See also
*
SYN flood
References
{{Reflist
Denial-of-service attacks