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Session Report

Summary:
Test run at: 2019-07-01 22:00:51 GMT
Client Prefix (v4): 177.152.66.x/24
Client AS (v4): 262773
IPv4 Probes: 93
Client Prefix (v6): 2002:b198:42xx::/40
Client AS (v6): 6939 (HURRICANE)
IPv6 Probes: 56
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA rewrittenblocked
Routable rewrittenblocked
Largest spoofable neighbor prefix length none/48
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 (177.152.66.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
177.152.66.x/24/31262773rewritten
177.152.66.x/24/30262773rewritten
177.152.66.x/24/29262773rewritten
177.152.66.x/24/28262773rewritten
177.152.66.x/24/27262773rewritten
177.152.66.x/24/26262773rewritten
177.152.66.x/24/25262773rewritten
177.152.66.x/24/24262773rewritten
177.152.67.x/24/23262773rewritten
177.152.64.x/24/22262773rewritten
177.152.70.x/24/21262773rewritten
177.152.74.x/24/20262773rewritten
177.152.82.x/24/1952527rewritten
177.152.98.x/24/18UNROUTEDrewritten
177.152.2.x/24/17262399rewritten
177.152.194.x/24/16263034rewritten
177.153.66.x/24/1527715rewritten
177.154.66.x/24/14267484rewritten
177.156.66.x/24/1318881rewritten
177.144.66.x/24/1226599rewritten
177.136.66.x/24/11263600rewritten
177.184.66.x/24/1052898rewritten
177.216.66.x/24/926615rewritten
177.24.66.x/24/826599rewritten

Meaning of status in Received column:

rewrittenThe source address of the probe packets we received differs from the spoofed address. It appears that an intermediate device is rewriting your packet headers.

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).
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 probes:
Spoofed source addressDestinationReceived
2001:48d0:101:501::1592001:410:102:1::78no
2001:4978:1fb:6400::d22001:410:102:1::78no
2001:49aa:111:aa00::112001:410:102:1::78no
fd11:1111:1111::11112001:410:102:1::78no
2001:48d0:101:501::1592001:48d0:101:501::242no
2001:4978:1fb:6400::d22001:48d0:101:501::242no
2001:49aa:111:aa00::112001:48d0:101:501::242no
fd11:1111:1111::11112001:48d0:101:501::242no
2001:48d0:101:501::1592001:48d0:101:501::247no
2001:4978:1fb:6400::d22001:48d0:101:501::247no
2001:49aa:111:aa00::112001:48d0:101:501::247no
fd11:1111:1111::11112001:48d0:101:501::247no
2001:48d0:101:501::1592607:f278:2:13:ba27:ebff:fe3f:b21eno
2001:4978:1fb:6400::d22607:f278:2:13:ba27:ebff:fe3f:b21eno
2001:49aa:111:aa00::112607:f278:2:13:ba27:ebff:fe3f:b21eno
fd11:1111:1111::11112607:f278:2:13:ba27:ebff:fe3f:b21eno
IPv6 Adjacent Netblock Testing:
Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
2002:b198:42xx::/40/120UNROUTEDyes
2002:b198:42xx::/40/112UNROUTEDyes
2002:b198:42xx::/40/104UNROUTEDyes
2002:b198:42xx::/40/96UNROUTEDyes
2002:b198:42xx::/40/88UNROUTEDyes
2002:b198:42xx::/40/80UNROUTEDyes
2002:b198:42xx::/40/72UNROUTEDyes
2002:b198:42xx::/40/64UNROUTEDyes
2002:b198:42xx::/40/56UNROUTEDyes
2002:b198:42xx::/40/48UNROUTEDyes
2002:b198:42xx::/40/40UNROUTEDno
2002:b198:c2xx::/40/32UNROUTEDno
2002:b118:42xx::/40/24UNROUTEDno
2002:3198:42xx::/40/16UNROUTEDno

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)
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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