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Session Report

Summary:
Test run at: 2022-12-13 20:18:14 GMT
Client Prefix (v4): 193.5.68.x/24
Client AS (v4): 196621 (FREESTONE)
IPv4 Probes: 60
Client Prefix (v6): 2001:67c:xx::/40
Client AS (v6): 196621 (FREESTONE)
IPv6 Probes: 52
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 /26/64
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 (193.5.68.x/24) can spoof 63 neighboring addresses (within your /26 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
193.5.68.x/24/31196621yes
193.5.68.x/24/30196621yes
193.5.68.x/24/29196621yes
193.5.68.x/24/28196621yes
193.5.68.x/24/27196621yes
193.5.68.x/24/26196621yes
193.5.68.x/24/25196621no
193.5.68.x/24/24196621no
193.5.69.x/24/23196621no
193.5.70.x/24/22UNROUTEDno
193.5.64.x/24/21UNROUTEDno
193.5.76.x/24/209042no
193.5.84.x/24/19559no
193.5.100.x/24/18UNROUTEDno
193.5.4.x/24/173303no
193.5.196.x/24/16UNROUTEDno
193.4.68.x/24/1512969no
193.7.68.x/24/14UNROUTEDno
193.1.68.x/24/131213no
193.13.68.x/24/121257no
193.21.68.x/24/11UNROUTEDno
193.37.68.x/24/1052000no
193.69.68.x/24/92116no
193.133.68.x/24/8702no

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
2001:67c:xx::/40/120196621yes
2001:67c:xx::/40/112196621yes
2001:67c:xx::/40/104196621yes
2001:67c:xx::/40/96196621yes
2001:67c:xx::/40/88196621yes
2001:67c:xx::/40/80196621yes
2001:67c:xx::/40/72196621yes
2001:67c:xx::/40/64196621yes
2001:67c:xx::/40/56196621no
2001:67c:xx::/40/48196621no
2001:67c:xx::/40/4057436no
2001:67c:80xx::/40/32UNROUTEDno
2001:6fc:xx::/40/24UNROUTEDno
2001:867c:xx::/40/161221no

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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