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Session Report

Summary:
Test run at: 2021-10-17 20:49:02 GMT
Client Prefix (v4): 172.99.232.x/24
Client AS (v4): 212934 (ACCURIS_HOSTING)
IPv4 Probes: 66
Client Prefix (v6): 2602:fcd3:xx::/40
Client AS (v6): 212934 (ACCURIS_HOSTING)
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 /24/48
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 (172.99.232.x/24) can spoof 255 neighboring addresses (within your /24 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
172.99.232.x/24/31212934yes
172.99.232.x/24/30212934yes
172.99.232.x/24/29212934yes
172.99.232.x/24/28212934yes
172.99.232.x/24/27212934yes
172.99.232.x/24/26212934yes
172.99.232.x/24/25212934yes
172.99.232.x/24/24212934yes
172.99.233.x/24/2313830no
172.99.234.x/24/22UNROUTEDno
172.99.236.x/24/21UNROUTEDno
172.99.224.x/24/2022121no
172.99.248.x/24/1921863no
172.99.200.x/24/1863131no
172.99.168.x/24/1714862no
172.99.104.x/24/1633070no
172.98.232.x/24/1515083no
172.97.232.x/24/1411814no
172.103.232.x/24/1325668no
172.107.232.x/24/1240676no
172.115.232.x/24/1120001no
172.67.232.x/24/1013335no
172.35.232.x/24/921928no
172.227.232.x/24/820940no

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)

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
2602:fcd3:xx::/40/120212934yes
2602:fcd3:xx::/40/112212934yes
2602:fcd3:xx::/40/104212934yes
2602:fcd3:xx::/40/96212934yes
2602:fcd3:xx::/40/88212934yes
2602:fcd3:xx::/40/80212934yes
2602:fcd3:xx::/40/72212934yes
2602:fcd3:xx::/40/64212934yes
2602:fcd3:xx::/40/56212934yes
2602:fcd3:xx::/40/48212934yes
2602:fcd3:xx::/40/40UNROUTEDno
2602:fcd3:80xx::/40/32UNROUTEDno
2602:fc53:xx::/40/24UNROUTEDno
2602:7cd3:xx::/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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