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Session Report

Summary:
Test run at: 2022-06-14 00:41:59 GMT
Client Prefix (v4): 77.47.94.x/24
Client AS (v4): 35244 (KMS-DE_AS)
IPv4 Probes: 60
Client Prefix (v6): 2a02:2455:axx::/40
Client AS (v6): 35244 (KMS-DE_AS)
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/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.
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 (77.47.94.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
77.47.94.x/24/3135244natblock
77.47.94.x/24/3035244natblock
77.47.94.x/24/2935244natblock
77.47.94.x/24/2835244natblock
77.47.94.x/24/2735244natblock
77.47.94.x/24/2635244natblock
77.47.94.x/24/2535244natblock
77.47.94.x/24/2435244natblock
77.47.95.x/24/2335244natblock
77.47.92.x/24/2235244natblock
77.47.90.x/24/2135244natblock
77.47.86.x/24/2035244natblock
77.47.78.x/24/1935244natblock
77.47.126.x/24/1835244natblock
77.47.30.x/24/1735244natblock
77.47.222.x/24/1625500natblock
77.46.94.x/24/1541931natblock
77.45.94.x/24/1435191natblock
77.43.94.x/24/135396natblock
77.39.94.x/24/1212683natblock
77.63.94.x/24/111136natblock
77.15.94.x/24/106805natblock
77.111.94.x/24/9197248natblock
77.175.94.x/24/81136natblock

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 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
2a02:2455:axx::/40/12035244yes
2a02:2455:axx::/40/11235244yes
2a02:2455:axx::/40/10435244yes
2a02:2455:axx::/40/9635244yes
2a02:2455:axx::/40/8835244yes
2a02:2455:axx::/40/8035244yes
2a02:2455:axx::/40/7235244yes
2a02:2455:axx::/40/6435244yes
2a02:2455:axx::/40/5635244no
2a02:2455:axx::/40/4835244no
2a02:2455:axx::/40/4035244no
2a02:2455:8axx::/40/3220880no
2a02:24d5:axx::/40/24UNROUTEDno
2a02:a455:axx::/40/161136no

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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