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Session Report

Summary:
Test run at: 2021-12-05 15:48:11 GMT
Client Prefix (v4): 149.200.191.x/24
Client AS (v4): 8376
IPv4 Probes: 66
Client Prefix (v6): 2a01:9700:14xx::/40
Client AS (v6): 0
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 (149.200.191.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
149.200.191.x/24/318376natblock
149.200.191.x/24/308376natblock
149.200.191.x/24/298376natblock
149.200.191.x/24/288376natblock
149.200.191.x/24/278376natblock
149.200.191.x/24/268376natblock
149.200.191.x/24/258376natblock
149.200.191.x/24/248376natblock
149.200.190.x/24/238376natblock
149.200.189.x/24/228376natblock
149.200.187.x/24/218376natblock
149.200.183.x/24/208376natblock
149.200.175.x/24/198376natblock
149.200.159.x/24/188376natblock
149.200.255.x/24/178376natblock
149.200.63.x/24/165483natblock
149.201.191.x/24/15680natblock
149.202.191.x/24/1416276natblock
149.204.191.x/24/13UNROUTEDnatblock
149.192.191.x/24/12UNROUTEDnatblock
149.216.191.x/24/1112422natblock
149.232.191.x/24/1015763natblock
149.136.191.x/24/91348natblock
149.72.191.x/24/811377natblock

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
2a01:9700:14xx::/40/120UNROUTEDyes
2a01:9700:14xx::/40/112UNROUTEDyes
2a01:9700:14xx::/40/104UNROUTEDyes
2a01:9700:14xx::/40/96UNROUTEDyes
2a01:9700:14xx::/40/88UNROUTEDyes
2a01:9700:14xx::/40/80UNROUTEDyes
2a01:9700:14xx::/40/72UNROUTEDyes
2a01:9700:14xx::/40/64UNROUTEDyes
2a01:9700:14xx::/40/56UNROUTEDno
2a01:9700:14xx::/40/48UNROUTEDno
2a01:9700:14xx::/40/408376no
2a01:9700:94xx::/40/32UNROUTEDno
2a01:9780:14xx::/40/24209754no
2a01:1700:14xx::/40/165617no

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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