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Session Report

Summary:
Test run at: 2020-08-31 17:31:53 GMT
Client Prefix (v4): 188.227.163.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 blocked
Routable blocked
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 (188.227.163.x/24) can spoof 255 neighboring addresses (within your /24 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
188.227.163.x/24/3120860yes
188.227.163.x/24/3020860yes
188.227.163.x/24/2920860yes
188.227.163.x/24/2820860yes
188.227.163.x/24/2720860yes
188.227.163.x/24/2620860yes
188.227.163.x/24/2520860yes
188.227.163.x/24/2420860yes
188.227.162.x/24/2320860no
188.227.161.x/24/2220860no
188.227.167.x/24/2120860no
188.227.171.x/24/2020860no
188.227.179.x/24/1920860no
188.227.131.x/24/18206819no
188.227.227.x/24/1747381no
188.227.35.x/24/16UNROUTEDno
188.226.163.x/24/1514061no
188.225.163.x/24/1412754no
188.231.163.x/24/13UNROUTEDno
188.235.163.x/24/1250543no
188.243.163.x/24/1135807no
188.195.163.x/24/103209no
188.163.163.x/24/912530no
188.99.163.x/24/83209no

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 1 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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