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Session Report

Summary:
Test run at: 2020-08-24 14:30:07 GMT
Client Prefix (v4): 78.129.141.x/24
Client AS (v4): 20860 (IOMART-AS)
IPv4 Probes: 75
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 received
Routable received
Largest spoofable neighbor prefix length /9
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 (78.129.141.x/24) can spoof 8388607 neighboring addresses (within your /9 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
78.129.141.x/24/3120860natblock
78.129.141.x/24/3020860natblock
78.129.141.x/24/2920860natblock
78.129.141.x/24/2820860natblock
78.129.141.x/24/2720860natblock
78.129.141.x/24/2620860yes
78.129.141.x/24/2520860yes
78.129.141.x/24/2420860yes
78.129.140.x/24/2320860yes
78.129.143.x/24/2220860yes
78.129.137.x/24/2120860yes
78.129.133.x/24/2020860yes
78.129.157.x/24/1920860yes
78.129.173.x/24/1820860yes
78.129.205.x/24/1720860yes
78.129.13.x/24/1612392yes
78.128.141.x/24/152852natblock
78.131.141.x/24/1420960yes
78.133.141.x/24/135588yes
78.137.141.x/24/1231122natblock
78.145.141.x/24/1113285natblock
78.161.141.x/24/1047331yes
78.193.141.x/24/912322yes
78.1.141.x/24/85391natblock

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)
natblockSpoofed probe packets appear to be blocked by your local NAT or firewall rather than being rewritten with a public source address.

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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