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Session Report

Summary:
Test run at: 2023-02-13 13:39:47 GMT
Client Prefix (v4): 186.233.4.x/24
Client AS (v4): 270890
IPv4 Probes: 60
Client Prefix (v6): 2804:7304:24xx::/40
Client AS (v6): 270890
IPv6 Probes: 52
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA blockedblocked
Routable receivedblocked
Largest spoofable neighbor prefix length /8/40
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 (186.233.4.x/24) can spoof 16777215 neighboring addresses (within your /8 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
186.233.4.x/24/31270890yes
186.233.4.x/24/30270890yes
186.233.4.x/24/29270890yes
186.233.4.x/24/28270890yes
186.233.4.x/24/27270890yes
186.233.4.x/24/26270890yes
186.233.4.x/24/25270890yes
186.233.4.x/24/24270890yes
186.233.5.x/24/23270890yes
186.233.6.x/24/22270890natblock
186.233.0.x/24/21270755yes
186.233.12.x/24/20263083yes
186.233.20.x/24/19262777yes
186.233.36.x/24/1853201yes
186.233.68.x/24/17262781yes
186.233.132.x/24/16262789yes
186.232.4.x/24/1553183yes
186.235.4.x/24/1453059yes
186.237.4.x/24/13262797yes
186.225.4.x/24/1228343yes
186.249.4.x/24/1128250yes
186.201.4.x/24/1010429yes
186.169.4.x/24/93816yes
186.105.4.x/24/87418yes

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)
natblockSpoofed probe packets appear to be blocked by your local NAT or firewall rather than being rewritten with a public source address.

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::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
2804:7304:24xx::/40/120270890yes
2804:7304:24xx::/40/112270890yes
2804:7304:24xx::/40/104270890yes
2804:7304:24xx::/40/96270890yes
2804:7304:24xx::/40/88270890yes
2804:7304:24xx::/40/80270890yes
2804:7304:24xx::/40/72270890yes
2804:7304:24xx::/40/64270890yes
2804:7304:24xx::/40/56270890yes
2804:7304:24xx::/40/48270890yes
2804:7304:24xx::/40/40270890yes
2804:7304:a4xx::/40/32270890no
2804:7384:24xx::/40/24UNROUTEDno
2804:f304:24xx::/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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