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Session Report

Summary:
Test run at: 2023-03-13 19:27:55 GMT
Client Prefix (v4): 75.157.199.x/24
Client AS (v4): 852 (ASN852)
IPv4 Probes: 57
Client Prefix (v6): 2001:569:7fxx::/40
Client AS (v6): 852 (ASN852)
IPv6 Probes: 52
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/64
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 (75.157.199.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
75.157.199.x/24/31852rewritten
75.157.199.x/24/30852rewritten
75.157.199.x/24/29852rewritten
75.157.199.x/24/28852rewritten
75.157.199.x/24/27852rewritten
75.157.199.x/24/26852rewritten
75.157.199.x/24/25852rewritten
75.157.199.x/24/24852rewritten
75.157.198.x/24/23852rewritten
75.157.197.x/24/22852rewritten
75.157.195.x/24/21852rewritten
75.157.207.x/24/20852rewritten
75.157.215.x/24/19852rewritten
75.157.231.x/24/18852rewritten
75.157.135.x/24/17852rewritten
75.157.71.x/24/16852rewritten
75.156.199.x/24/15UNROUTEDrewritten
75.159.199.x/24/14852rewritten
75.153.199.x/24/13UNROUTEDrewritten
75.149.199.x/24/127922rewritten
75.141.199.x/24/1120115rewritten
75.189.199.x/24/1011426rewritten
75.221.199.x/24/96167rewritten
75.29.199.x/24/87018rewritten

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 probes:
Spoofed source addressDestinationReceived
2001:48d0:101:501::1592001:40b0:7500:280::5458:517ano
2001:4978:1fb:6400::d22001:40b0:7500:280::5458:517ano
2001:49aa:111:aa00::112001:40b0:7500:280::5458:517ano
fd11:1111:1111::11112001:40b0:7500:280::5458:517ano
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::1592001:610:510:115:192:42:115:98no
2001:4978:1fb:6400::d22001:610:510:115:192:42:115:98no
2001:49aa:111:aa00::112001:610:510:115:192:42:115:98no
fd11:1111:1111::11112001:610:510:115:192:42:115:98no
2001:48d0:101:501::1592001:630:212:225:225:90ff:fe0c:45a6no
2001:4978:1fb:6400::d22001:630:212:225:225:90ff:fe0c:45a6no
2001:49aa:111:aa00::112001:630:212:225:225:90ff:fe0c:45a6no
fd11:1111:1111::11112001:630:212:225:225:90ff:fe0c:45a6no
2001:48d0:101:501::1592001:770:1c:7:225:90ff:fe0c:acb4no
2001:4978:1fb:6400::d22001:770:1c:7:225:90ff:fe0c:acb4no
2001:49aa:111:aa00::112001:770:1c:7:225:90ff:fe0c:acb4no
fd11:1111:1111::11112001:770:1c:7:225:90ff:fe0c:acb4no
IPv6 Adjacent Netblock Testing:
Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
2001:569:7fxx::/40/120852yes
2001:569:7fxx::/40/112852yes
2001:569:7fxx::/40/104852yes
2001:569:7fxx::/40/96852yes
2001:569:7fxx::/40/88852yes
2001:569:7fxx::/40/80852yes
2001:569:7fxx::/40/72852yes
2001:569:7fxx::/40/64852yes
2001:569:7fxx::/40/56852no
2001:569:7fxx::/40/48852no
2001:569:7fxx::/40/40852no
2001:569:ffxx::/40/32852no
2001:5e9:7fxx::/40/24UNROUTEDno
2001:8569:7fxx::/40/161221no

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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