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Session Report

Summary:
Test run at: 2021-12-28 03:06:55 GMT
Client Prefix (v4): 186.194.216.x/24
Client AS (v4): 262691
IPv4 Probes: 63
Client Prefix (v6): 2804:1cd8:c8xx::/40
Client AS (v6): 262691
IPv6 Probes: 52
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA receivedblocked
Routable blockedblocked
Largest spoofable neighbor prefix length /20/48

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.

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 (186.194.216.x/24) can spoof 4095 neighboring addresses (within your /20 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
186.194.216.x/24/31262691yes
186.194.216.x/24/30262691yes
186.194.216.x/24/29262691yes
186.194.216.x/24/28262691yes
186.194.216.x/24/27262691yes
186.194.216.x/24/26262691yes
186.194.216.x/24/25262691yes
186.194.216.x/24/24262691yes
186.194.217.x/24/23262691yes
186.194.218.x/24/22262691yes
186.194.220.x/24/21262691yes
186.194.208.x/24/20262691yes
186.194.200.x/24/1953142natblock
186.194.248.x/24/18262733natblock
186.194.152.x/24/1753065natblock
186.194.88.x/24/1628249natblock
186.195.216.x/24/15262983natblock
186.192.216.x/24/14262732natblock
186.198.216.x/24/1326615natblock
186.202.216.x/24/1227715natblock
186.210.216.x/24/1153006natblock
186.226.216.x/24/10262957natblock
186.130.216.x/24/922927natblock
186.66.216.x/24/814522natblock

Meaning of status in Received column:

yesPackets spoofed from adjacent netblock were received (but that netblock is within the source AS)
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
2804:1cd8:c8xx::/40/120262691yes
2804:1cd8:c8xx::/40/112262691yes
2804:1cd8:c8xx::/40/104262691yes
2804:1cd8:c8xx::/40/96262691yes
2804:1cd8:c8xx::/40/88262691yes
2804:1cd8:c8xx::/40/80262691yes
2804:1cd8:c8xx::/40/72262691yes
2804:1cd8:c8xx::/40/64262691yes
2804:1cd8:c8xx::/40/56262691yes
2804:1cd8:c8xx::/40/48262691yes
2804:1cd8:c8xx::/40/40262691no
2804:1cd8:48xx::/40/32262691no
2804:1c58:c8xx::/40/24UNROUTEDno
2804:9cd8:c8xx::/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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