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Session Report

Summary:
Test run at: 2021-10-03 18:21:06 GMT
Client Prefix (v4): 187.126.44.x/24
Client AS (v4): 7738
IPv4 Probes: 66
Client Prefix (v6): 2804:d41:f9xx::/40
Client AS (v6): 7738
IPv6 Probes: 56
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA blockedblocked
Routable blockedblocked
Largest spoofable neighbor prefix length none/56

Meaning of result status in column:

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 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 (187.126.44.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
187.126.44.x/24/317738natblock
187.126.44.x/24/307738natblock
187.126.44.x/24/297738natblock
187.126.44.x/24/287738natblock
187.126.44.x/24/277738natblock
187.126.44.x/24/267738natblock
187.126.44.x/24/257738natblock
187.126.44.x/24/247738natblock
187.126.45.x/24/237738natblock
187.126.46.x/24/227738natblock
187.126.40.x/24/217738natblock
187.126.36.x/24/207738natblock
187.126.60.x/24/197738natblock
187.126.12.x/24/187738natblock
187.126.108.x/24/177738natblock
187.126.172.x/24/167738natblock
187.127.44.x/24/157738natblock
187.124.44.x/24/147738natblock
187.122.44.x/24/1328573natblock
187.118.44.x/24/1226599natblock
187.110.44.x/24/1153116natblock
187.94.44.x/24/10262684natblock
187.62.44.x/24/922689natblock
187.254.44.x/24/8UNROUTEDnatblock

Meaning of status in Received column:

natblockSpoofed probe packets appear to be blocked by your local NAT or firewall rather than being rewritten with a public source address.

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::1592001:48d0:101:501::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:d41:f9xx::/40/1207738yes
2804:d41:f9xx::/40/1127738yes
2804:d41:f9xx::/40/1047738yes
2804:d41:f9xx::/40/967738yes
2804:d41:f9xx::/40/887738yes
2804:d41:f9xx::/40/807738yes
2804:d41:f9xx::/40/727738yes
2804:d41:f9xx::/40/647738yes
2804:d41:f9xx::/40/567738yes
2804:d41:f9xx::/40/487738no
2804:d41:f9xx::/40/407738no
2804:d41:79xx::/40/327738no
2804:dc1:f9xx::/40/24UNROUTEDno
2804:8d41:f9xx::/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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