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Session Report

Summary:
Test run at: 2020-12-03 07:51:58 GMT
Client Prefix (v4): 185.5.200.x/24
Client AS (v4): 59715 (SBTAP-AS)
IPv4 Probes: 75
Client Prefix (v6): 2a02:cdc6:30xx::/40
Client AS (v6): 59715 (SBTAP-AS)
IPv6 Probes: 68
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

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


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
185.5.200.x/24/3159715natblock
185.5.200.x/24/3059715natblock
185.5.200.x/24/2959715natblock
185.5.200.x/24/2859715natblock
185.5.200.x/24/2759715natblock
185.5.200.x/24/2659715natblock
185.5.200.x/24/2559715natblock
185.5.200.x/24/2459715natblock
185.5.201.x/24/2359715natblock
185.5.202.x/24/2259715natblock
185.5.204.x/24/21UNROUTEDnatblock
185.5.192.x/24/20206054natblock
185.5.216.x/24/1931304natblock
185.5.232.x/24/1859720natblock
185.5.136.x/24/1747764natblock
185.5.72.x/24/16208415natblock
185.4.200.x/24/1544002natblock
185.7.200.x/24/1431484natblock
185.1.200.x/24/13UNROUTEDnatblock
185.13.200.x/24/1234977natblock
185.21.200.x/24/11UNROUTEDnatblock
185.37.200.x/24/10UNROUTEDnatblock
185.69.200.x/24/962317natblock
185.133.200.x/24/8209344natblock

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::1592001:770:18:7:225:90ff:fe0c:acb4no
2001:4978:1fb:6400::d22001:770:18:7:225:90ff:fe0c:acb4no
2001:49aa:111:aa00::112001:770:18:7:225:90ff:fe0c:acb4no
fd11:1111:1111::11112001:770:18:7:225:90ff:fe0c:acb4no
2001:48d0:101:501::1592001:df0:4:800:21c:c0ff:feb2:ad5fno
2001:4978:1fb:6400::d22001:df0:4:800:21c:c0ff:feb2:ad5fno
2001:49aa:111:aa00::112001:df0:4:800:21c:c0ff:feb2:ad5fno
fd11:1111:1111::11112001:df0:4:800:21c:c0ff:feb2:ad5fno
IPv6 Adjacent Netblock Testing:
Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
2a02:cdc6:30xx::/40/12059715yes
2a02:cdc6:30xx::/40/11259715yes
2a02:cdc6:30xx::/40/10459715yes
2a02:cdc6:30xx::/40/9659715yes
2a02:cdc6:30xx::/40/8859715yes
2a02:cdc6:30xx::/40/8059715yes
2a02:cdc6:30xx::/40/7259715yes
2a02:cdc6:30xx::/40/6459715yes
2a02:cdc6:30xx::/40/5659715no
2a02:cdc6:30xx::/40/4859715no
2a02:cdc6:30xx::/40/4059715no
2a02:cdc6:b0xx::/40/3259715no
2a02:cd46:30xx::/40/24UNROUTEDno
2a02:4dc6:30xx::/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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