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Session Report

Summary:
Test run at: 2021-12-12 15:22:00 GMT
Client Prefix (v4): 91.219.238.x/24
Client AS (v4): 56322 (ServerAstra-AS)
IPv4 Probes: 66
Client Prefix (v6): 2a10:c800:xx::/40
Client AS (v6): 56322 (ServerAstra-AS)
IPv6 Probes: 56
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA receivedblocked
Routable receivedreceived
Largest spoofable neighbor prefix length /8/16
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.
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 (91.219.238.x/24) can spoof 16777215 neighboring addresses (within your /8 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
91.219.238.x/24/3156322yes
91.219.238.x/24/3056322yes
91.219.238.x/24/2956322yes
91.219.238.x/24/2856322yes
91.219.238.x/24/2756322yes
91.219.238.x/24/2656322yes
91.219.238.x/24/2556322yes
91.219.238.x/24/2456322yes
91.219.239.x/24/2356322yes
91.219.236.x/24/2256322yes
91.219.234.x/24/2141161yes
91.219.230.x/24/2015673yes
91.219.254.x/24/1948230yes
91.219.206.x/24/1851715yes
91.219.174.x/24/1751726yes
91.219.110.x/24/1639647yes
91.218.238.x/24/15209574yes
91.217.238.x/24/1451533yes
91.223.238.x/24/1360973yes
91.211.238.x/24/1248758yes
91.203.238.x/24/1113296yes
91.251.238.x/24/10197207yes
91.155.238.x/24/9719yes
91.91.238.x/24/835238yes

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)

IPv4 Outbound Filtering Depth:

The tracefilter test found your host able to spoof routable, non-adjacent source addresses through the first 10 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:acb4yes
2001:49aa:111:aa00::112001:770:1c:7:225:90ff:fe0c:acb4yes
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
2a10:c800:xx::/40/12056322yes
2a10:c800:xx::/40/11256322yes
2a10:c800:xx::/40/10456322yes
2a10:c800:xx::/40/9656322yes
2a10:c800:xx::/40/8856322yes
2a10:c800:xx::/40/8056322yes
2a10:c800:xx::/40/7256322yes
2a10:c800:xx::/40/6456322yes
2a10:c800:xx::/40/5656322yes
2a10:c800:xx::/40/4856322yes
2a10:c800:xx::/40/40UNROUTEDyes
2a10:c800:80xx::/40/32UNROUTEDyes
2a10:c880:xx::/40/24UNROUTEDyes
2a10:4800:xx::/40/16399975yes

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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