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Session Report

Summary:
Test run at: 2023-11-04 02:29:27 GMT
Client Prefix (v4): 37.123.199.x/24
Client AS (v4): 41378 (KirinoNET)
IPv4 Probes: 69
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 blocked
Routable blocked
Largest spoofable neighbor prefix length /22
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 (37.123.199.x/24) can spoof 1023 neighboring addresses (within your /22 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
37.123.199.x/24/3141378yes
37.123.199.x/24/3041378yes
37.123.199.x/24/2941378yes
37.123.199.x/24/2841378yes
37.123.199.x/24/2741378yes
37.123.199.x/24/2641378yes
37.123.199.x/24/2541378yes
37.123.199.x/24/2441378yes
37.123.198.x/24/2341378yes
37.123.197.x/24/2241378yes
37.123.195.x/24/2141378no
37.123.207.x/24/2035378no
37.123.215.x/24/19UNROUTEDno
37.123.231.x/24/1849232no
37.123.135.x/24/178473no
37.123.71.x/24/1642912no
37.122.199.x/24/15206405no
37.121.199.x/24/1435819no
37.127.199.x/24/1334400no
37.115.199.x/24/1215895no
37.107.199.x/24/1125019no
37.91.199.x/24/103320no
37.59.199.x/24/916276no
37.251.199.x/24/8UNROUTEDno

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 unable to spoof routable, non-adjacent source addresses through even the first IP hop.
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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