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Session Report

Summary:
Test run at: 2021-10-13 10:36:52 GMT
Client Prefix (v4): 45.236.4.x/24
Client AS (v4): 268210
IPv4 Probes: 66
Client Prefix (v6): 2804:4da4:xx::/40
Client AS (v6): 268210
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/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 (45.236.4.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
45.236.4.x/24/31268210rewritten
45.236.4.x/24/30268210rewritten
45.236.4.x/24/29268210rewritten
45.236.4.x/24/28268210rewritten
45.236.4.x/24/27268210rewritten
45.236.4.x/24/26268210rewritten
45.236.4.x/24/25268210rewritten
45.236.4.x/24/24268210rewritten
45.236.5.x/24/23268210rewritten
45.236.6.x/24/22268210rewritten
45.236.0.x/24/21268215rewritten
45.236.12.x/24/20268219rewritten
45.236.20.x/24/19268222rewritten
45.236.36.x/24/18268239rewritten
45.236.68.x/24/17268228rewritten
45.236.132.x/24/16268260rewritten
45.237.4.x/24/15268292rewritten
45.238.4.x/24/14268308rewritten
45.232.4.x/24/13267238rewritten
45.228.4.x/24/12267039rewritten
45.252.4.x/24/11UNROUTEDrewritten
45.204.4.x/24/10137951rewritten
45.172.4.x/24/9268739rewritten
45.108.4.x/24/837069rewritten

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 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 probes:
Spoofed source addressDestinationReceived
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
2804:4da4:xx::/40/120268210yes
2804:4da4:xx::/40/112268210yes
2804:4da4:xx::/40/104268210yes
2804:4da4:xx::/40/96268210yes
2804:4da4:xx::/40/88268210yes
2804:4da4:xx::/40/80268210yes
2804:4da4:xx::/40/72268210yes
2804:4da4:xx::/40/64268210yes
2804:4da4:xx::/40/56268210no
2804:4da4:xx::/40/48268210no
2804:4da4:xx::/40/40268210no
2804:4da4:80xx::/40/32268210no
2804:4d24:xx::/40/24UNROUTEDno
2804:cda4:xx::/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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