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Session Report

Summary:
Test run at: 2018-11-06 12:37:36 GMT
Client Prefix (v4): 91.229.20.x/24
Client AS (v4): 197922 (FIRSTHEBERG)
IPv4 Probes: 124
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 blocked
Routable received
Largest spoofable neighbor prefix length /24
Spoof status key
receivedSpoofed packet was received.Pattern of tests from this IP block indicates a switch from allowing spoofing to blocking it.
rewrittenSpoofed packet was received, but the source address was changed en route.
blockedSpoofed packet was not received, but unspoofed packet was.
unknownNeither spoofed nor unspoofed packet was received.

IPv4 Adjacent Netblock Testing:

Your host (91.229.20.x/24) can spoof 255 neighboring addresses (within your /24 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
91.229.20.x/24/31197922yes
91.229.20.x/24/30197922yes
91.229.20.x/24/29197922yes
91.229.20.x/24/28197922yes
91.229.20.x/24/27197922yes
91.229.20.x/24/26197922yes
91.229.20.x/24/25197922yes
91.229.20.x/24/24197922yes
91.229.21.x/24/232119no
91.229.22.x/24/22198704no
91.229.16.x/24/21UNROUTEDno
91.229.28.x/24/2056926no
91.229.4.x/24/19UNROUTEDno
91.229.52.x/24/1850643no
91.229.84.x/24/1756949no
91.229.148.x/24/16UNROUTEDno
91.228.20.x/24/1556816no
91.231.20.x/24/1457890no
91.225.20.x/24/1352222no
91.237.20.x/24/12UNROUTEDno
91.245.20.x/24/11UNROUTEDno
91.197.20.x/24/1057251no
91.165.20.x/24/912322no
91.101.20.x/24/815516no

Meaning of status in Received column:

noPackets spoofed from adjacent netblock were not received, probably due to blocking
yesPackets spoofed from adjacent netblock were received (but that netblock is within the source AS)

IPv4 Outbound Filtering Depth:

The tracefilter test found your host able to spoof routable, non-adjacent source addresses through the first 2 IP hop(s).
Summary:
The results from all tests are aggregated to produce a summary "State of IP Spoofing" report.
Feedback:
We welcome questions and feedback to the Spoofer Information Mailing List and invite users to join the Spoofer Users Mailing List for discussion and announcements.
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