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Session Report

Summary:
Test run at: 2022-07-18 13:24:23 GMT
Client Prefix (v4): 194.26.238.x/24
Client AS (v4): 211501 (HIGHTIDEGROUP-AS)
IPv4 Probes: 60
Client Prefix (v6): 2001:67c:10xx::/40
Client AS (v6): 211501 (HIGHTIDEGROUP-AS)
IPv6 Probes: 56
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA rewrittenblocked
Routable rewrittenblocked
Largest spoofable neighbor prefix length none/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.

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


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
194.26.238.x/24/31211501rewritten
194.26.238.x/24/30211501rewritten
194.26.238.x/24/29211501rewritten
194.26.238.x/24/28211501rewritten
194.26.238.x/24/27211501rewritten
194.26.238.x/24/26211501rewritten
194.26.238.x/24/25211501rewritten
194.26.238.x/24/24211501rewritten
194.26.239.x/24/23UNROUTEDrewritten
194.26.236.x/24/2233452rewritten
194.26.234.x/24/219009rewritten
194.26.230.x/24/20UNROUTEDrewritten
194.26.254.x/24/19UNROUTEDrewritten
194.26.206.x/24/18199713rewritten
194.26.174.x/24/1760609rewritten
194.26.110.x/24/1633915rewritten
194.27.238.x/24/1524614rewritten
194.24.238.x/24/1431540rewritten
194.30.238.x/24/133329rewritten
194.18.238.x/24/123301rewritten
194.10.238.x/24/112686rewritten
194.58.238.x/24/10UNROUTEDrewritten
194.90.238.x/24/91680rewritten
194.154.238.x/24/86855rewritten

Meaning of status in Received column:

rewrittenThe source address of the probe packets we received differs from the spoofed address. It appears that an intermediate device is rewriting your packet headers.

IPv4 Outbound Filtering Depth:

The tracefilter test found your host able to spoof routable, non-adjacent source addresses through the first 3 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::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:10xx::/40/120211501yes
2001:67c:10xx::/40/112211501yes
2001:67c:10xx::/40/104211501yes
2001:67c:10xx::/40/96211501yes
2001:67c:10xx::/40/88211501yes
2001:67c:10xx::/40/80211501yes
2001:67c:10xx::/40/72211501yes
2001:67c:10xx::/40/64211501yes
2001:67c:10xx::/40/56211501yes
2001:67c:10xx::/40/48211501yes
2001:67c:10xx::/40/4050345no
2001:67c:90xx::/40/32UNROUTEDno
2001:6fc:10xx::/40/24UNROUTEDno
2001:867c:10xx::/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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