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Session Report

Summary:
Test run at: 2020-09-08 18:00:33 GMT
Client Prefix (v4): 38.107.114.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 received
Largest spoofable neighbor prefix length /8
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.

Warnings:

IPv4 Adjacent Netblock Testing:

Your host (38.107.114.x/24) can spoof 16777215 neighboring addresses (within your /8 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
38.107.114.x/24/31174yes
38.107.114.x/24/30174yes
38.107.114.x/24/29174yes
38.107.114.x/24/28174yes
38.107.114.x/24/27174yes
38.107.114.x/24/26174yes
38.107.114.x/24/25174yes
38.107.114.x/24/24174yes
38.107.115.x/24/23174yes
38.107.112.x/24/22174yes
38.107.118.x/24/21174yes
38.107.122.x/24/20174yes
38.107.98.x/24/1936498yes
38.107.82.x/24/1853865yes
38.107.50.x/24/17174yes
38.107.242.x/24/16393398yes
38.106.114.x/24/15174yes
38.105.114.x/24/14174yes
38.111.114.x/24/1362563yes
38.99.114.x/24/12174yes
38.123.114.x/24/11174yes
38.75.114.x/24/10174yes
38.43.114.x/24/9174yes
38.235.114.x/24/8174yes

Meaning of status in Received column:

yesPackets spoofed from adjacent netblock were received
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 10 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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