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Session Report

Summary:
Test run at: 2019-08-07 12:26:40 GMT
Client Prefix (v4): 74.200.191.x/24
Client AS (v4): 54700 (LEARN-HOUSTON)
IPv4 Probes: 96
Client Prefix (v6): 2620:0:6xx::/40
Client AS (v6): 13371 (DUKE-INTERCHANGE)
IPv6 Probes: 76
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA unknownunknown
Routable unknownunknown
Largest spoofable neighbor prefix length nonenone
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 AS Route:
This test run probed the following paths in order to infer your ability to send different spoofed source packets. Each node in the graph corresponds to an autonomous system, i.e. different Internet service providers. NOTE: This graph does NOT show if an AS blocks spoofed packets, only the path taken by received spoofed packets. The IP Path Details are available for this run. If non-spoofed packets weren't received at a destination, the traceroute to that destination is not included in this graph and may even cause a totally empty graph.

  

  

IPv4 Adjacent Netblock Testing:

Your host (74.200.191.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
74.200.191.x/24/3154700sendto
74.200.191.x/24/3054700sendto
74.200.191.x/24/2954700sendto
74.200.191.x/24/2854700sendto
74.200.191.x/24/2754700sendto
74.200.191.x/24/2654700sendto
74.200.191.x/24/2554700sendto
74.200.191.x/24/2454700sendto
74.200.190.x/24/2314085sendto
74.200.189.x/24/2222645sendto
74.200.187.x/24/2116905sendto
74.200.183.x/24/2014085sendto
74.200.175.x/24/1922645sendto
74.200.159.x/24/1822645sendto
74.200.255.x/24/1719994sendto
74.200.63.x/24/1614010sendto
74.201.191.x/24/1512180sendto
74.202.191.x/24/143549sendto
74.204.191.x/24/1330568sendto
74.192.191.x/24/1219108sendto
74.216.191.x/24/1115290sendto
74.232.191.x/24/107018sendto
74.136.191.x/24/910796sendto
74.72.191.x/24/812271sendto

Meaning of status in Received column:

sendtoThe spoofer client was unable to send spoofed headers due to an operating system restriction.

IPv4 Outbound Filtering Depth:

The tracefilter test found your host unable to spoof routable, non-adjacent source addresses through even the first IP hop.
IPv6 AS Route:
This test run probed the following paths in order to infer your ability to send different spoofed source packets. Each node in the graph corresponds to an autonomous system, i.e. different Internet service providers. NOTE: This graph does NOT show if an AS blocks spoofed packets, only the path taken by received spoofed packets. The IP Path Details are available for this run. If non-spoofed packets weren't received at a destination, the traceroute to that destination is not included in this graph and may even cause a totally empty graph.

  

  
IPv6 Adjacent Netblock Testing:
Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
2620:0:6xx::/40/12013371sendto
2620:0:6xx::/40/11213371sendto
2620:0:6xx::/40/10413371sendto
2620:0:6xx::/40/9613371sendto
2620:0:6xx::/40/8813371sendto
2620:0:6xx::/40/8013371sendto
2620:0:6xx::/40/7213371sendto
2620:0:6xx::/40/6413371sendto
2620:0:6xx::/40/5613371sendto
2620:0:6xx::/40/4813371sendto
2620:0:6xx::/40/404185sendto
2620:0:86xx::/40/32UNROUTEDsendto
2620:80:6xx::/40/24UNROUTEDsendto
2620:8000:6xx::/40/16UNROUTEDsendto

Meaning of status in Received column:

sendtoThe spoofer client was unable to send spoofed headers due to an operating system restriction.
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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