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Session Report

Summary:
Test run at: 2021-12-30 23:29:59 GMT
Client Prefix (v4): 186.219.176.x/24
Client AS (v4): 262995
IPv4 Probes: 63
Client Prefix (v6): 2804:9d0:xx::/40
Client AS (v6): 262995
IPv6 Probes: 52
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA rewrittenblocked
Routable rewrittenreceived
Largest spoofable neighbor prefix length none/16
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 (186.219.176.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
186.219.176.x/24/31262995rewritten
186.219.176.x/24/30262995rewritten
186.219.176.x/24/29262995rewritten
186.219.176.x/24/28262995rewritten
186.219.176.x/24/27262995rewritten
186.219.176.x/24/26262995rewritten
186.219.176.x/24/25262995rewritten
186.219.176.x/24/24262995rewritten
186.219.177.x/24/23262995rewritten
186.219.178.x/24/22262995rewritten
186.219.180.x/24/21262995rewritten
186.219.184.x/24/20262970rewritten
186.219.160.x/24/19262754rewritten
186.219.144.x/24/18262992rewritten
186.219.240.x/24/1761745rewritten
186.219.48.x/24/16270071rewritten
186.218.176.x/24/1528573rewritten
186.217.176.x/24/1453166rewritten
186.223.176.x/24/1328573rewritten
186.211.176.x/24/1214840rewritten
186.203.176.x/24/1126615rewritten
186.251.176.x/24/10262832rewritten
186.155.176.x/24/919429rewritten
186.91.176.x/24/88048rewritten

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::1592001:48d0:101:501::242yes
2001:4978:1fb:6400::d22001:48d0:101:501::242yes
2001:49aa:111:aa00::112001:48d0:101:501::242yes
fd11:1111:1111::11112001:48d0:101:501::242no
2001:48d0:101:501::1592001:48d0:101:501::247yes
2001:4978:1fb:6400::d22001:48d0:101:501::247yes
2001:49aa:111:aa00::112001:48d0:101:501::247yes
fd11:1111:1111::11112001:48d0:101:501::247no
2001:48d0:101:501::1592001:610:510:115:192:42:115:98yes
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:45a6yes
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:acb4yes
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
2804:9d0:xx::/40/120262995yes
2804:9d0:xx::/40/112262995yes
2804:9d0:xx::/40/104262995yes
2804:9d0:xx::/40/96262995yes
2804:9d0:xx::/40/88262995yes
2804:9d0:xx::/40/80262995yes
2804:9d0:xx::/40/72262995yes
2804:9d0:xx::/40/64262995yes
2804:9d0:xx::/40/56262995yes
2804:9d0:xx::/40/48262995yes
2804:9d0:xx::/40/40262995yes
2804:9d0:80xx::/40/32262995yes
2804:950:xx::/40/24263072yes
2804:89d0:xx::/40/16UNROUTEDyes

Meaning of status in Received column:

yesPackets spoofed from adjacent netblock were received
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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