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Session Report

Summary:
Test run at: 2022-06-16 20:10:39 GMT
Client Prefix (v4): 187.189.50.x/24
Client AS (v4): 17072
IPv4 Probes: 60
Client Prefix (v6): 2806:2f0:81xx::/40
Client AS (v6): 17072
IPv6 Probes: 56
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA rewrittenreceived
Routable rewrittenreceived
Largest spoofable neighbor prefix length none/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.

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


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
187.189.50.x/24/3117072rewritten
187.189.50.x/24/3017072rewritten
187.189.50.x/24/2917072rewritten
187.189.50.x/24/2817072rewritten
187.189.50.x/24/2717072rewritten
187.189.50.x/24/2617072rewritten
187.189.50.x/24/2517072rewritten
187.189.50.x/24/2417072rewritten
187.189.51.x/24/2322884rewritten
187.189.48.x/24/2222884rewritten
187.189.54.x/24/2122884rewritten
187.189.58.x/24/2017072rewritten
187.189.34.x/24/1917072rewritten
187.189.18.x/24/1822884rewritten
187.189.114.x/24/1717072rewritten
187.189.178.x/24/1622884rewritten
187.188.50.x/24/1522884rewritten
187.191.50.x/24/1422884rewritten
187.185.50.x/24/13UNROUTEDrewritten
187.181.50.x/24/1228573rewritten
187.173.50.x/24/11UNROUTEDrewritten
187.157.50.x/24/108151rewritten
187.253.50.x/24/9UNROUTEDrewritten
187.61.50.x/24/818479rewritten

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 unable to spoof routable, non-adjacent source addresses through even the first IP hop.
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::242yes
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::247yes
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:acb4yes
IPv6 Adjacent Netblock Testing:
Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
2806:2f0:81xx::/40/12017072yes
2806:2f0:81xx::/40/11217072yes
2806:2f0:81xx::/40/10417072yes
2806:2f0:81xx::/40/9617072yes
2806:2f0:81xx::/40/8817072yes
2806:2f0:81xx::/40/8017072yes
2806:2f0:81xx::/40/7217072yes
2806:2f0:81xx::/40/6417072yes
2806:2f0:81xx::/40/5617072yes
2806:2f0:81xx::/40/4817072yes
2806:2f0:81xx::/40/4017072yes
2806:2f0:1xx::/40/32UNROUTEDyes
2806:270:81xx::/40/2419373yes
2806:82f0:81xx::/40/16UNROUTEDyes

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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