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Table 5 TCP filtering behavior with and without an established TCP connection

From: The role and security of firewalls in cyber-physical cloud computing

  Amazon and Google Azure (both)
Connection est. No Yes No Yes
(null)
F
S
SF
R
RF
RS
RSF
P
PF
PS
PSF
PR
PRF
PRS
PRSF
A
AF
AS
ASF
AR
ARF
ARS
ARSF
AP
APF
APS
APSF
APR
APRF
APRS
APRSF
U
UF
US
USF
UR
URF
URS
URSF
UP
UPF
UPS
UPSF
UPR
UPRF
UPRS
UPRSF
UA
UAF
UAS
UASF
UAR
UARF
UARS
UARSF
UAP
UAPF
UAPS
UAPSF
UAPR
UAPRF
UAPRS
UAPRSF