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Session Report

Summary:
Test run at: 2023-09-24 05:03:09 GMT
Client Prefix (v4): 186.189.90.x/24
Client AS (v4): 52341
IPv4 Probes: 69
Client Prefix (v6): 2803:c180:26xx::/40
Client AS (v6): 52341
IPv6 Probes: 60
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 (186.189.90.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
186.189.90.x/24/3152341rewritten
186.189.90.x/24/3052341rewritten
186.189.90.x/24/2952341rewritten
186.189.90.x/24/2852341rewritten
186.189.90.x/24/2752341rewritten
186.189.90.x/24/2652341natblock
186.189.90.x/24/2552341rewritten
186.189.90.x/24/2452341natblock
186.189.91.x/24/2352341natblock
186.189.88.x/24/2252341rewritten
186.189.94.x/24/2152341rewritten
186.189.82.x/24/2052341rewritten
186.189.74.x/24/19UNROUTEDnatblock
186.189.122.x/24/18UNROUTEDnatblock
186.189.26.x/24/1711816rewritten
186.189.218.x/24/1623243natblock
186.188.90.x/24/1521826rewritten
186.191.90.x/24/1411664rewritten
186.185.90.x/24/136306natblock
186.181.90.x/24/1227831rewritten
186.173.90.x/24/1127995natblock
186.157.90.x/24/1011664rewritten
186.253.90.x/24/926615rewritten
186.61.90.x/24/822927rewritten

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.
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::1592001:40b0:7500:280::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
2803:c180:26xx::/40/12052341yes
2803:c180:26xx::/40/11252341yes
2803:c180:26xx::/40/10452341yes
2803:c180:26xx::/40/9652341yes
2803:c180:26xx::/40/8852341yes
2803:c180:26xx::/40/8052341yes
2803:c180:26xx::/40/7252341yes
2803:c180:26xx::/40/6452341yes
2803:c180:26xx::/40/5652341no
2803:c180:26xx::/40/4852341no
2803:c180:26xx::/40/4052341no
2803:c180:a6xx::/40/3252341no
2803:c100:26xx::/40/2428103no
2803:4180:26xx::/40/16263238no

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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