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Session Report

Summary:
Test run at: 2020-03-06 04:44:11 GMT
Client Prefix (v4): 23.237.32.x/24
Client AS (v4): 174 (COGENT-174)
IPv4 Probes: 75
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 blocked
Routable blocked
Largest spoofable neighbor prefix length /29
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 (23.237.32.x/24) can spoof 7 neighboring addresses (within your /29 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
23.237.32.x/24/31174yes
23.237.32.x/24/30174yes
23.237.32.x/24/29174yes
23.237.32.x/24/28174no
23.237.32.x/24/27174no
23.237.32.x/24/26174no
23.237.32.x/24/25174no
23.237.32.x/24/24174no
23.237.33.x/24/23174no
23.237.34.x/24/22174no
23.237.36.x/24/21174no
23.237.40.x/24/20174no
23.237.48.x/24/19174no
23.237.0.x/24/18174no
23.237.96.x/24/17174no
23.237.160.x/24/16174no
23.236.32.x/24/1522892no
23.239.32.x/24/1422995no
23.233.32.x/24/135645no
23.229.32.x/24/1255286no
23.253.32.x/24/1119994no
23.205.32.x/24/1020940no
23.173.32.x/24/933452no
23.109.32.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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