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Session Report

Summary:
Test run at: 2022-07-11 01:25:37 GMT
Client Prefix (v4): 45.4.241.x/24
Client AS (v4): 266076
IPv4 Probes: 60
Client Prefix (v6): 2804:3a30:80xx::/40
Client AS (v6): 266076
IPv6 Probes: 56
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA rewrittenreceived
Routable receivedreceived
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 (45.4.241.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
45.4.241.x/24/31266076rewritten
45.4.241.x/24/30266076rewritten
45.4.241.x/24/29266076natblock
45.4.241.x/24/28266076rewritten
45.4.241.x/24/27266076rewritten
45.4.241.x/24/26266076rewritten
45.4.241.x/24/25266076rewritten
45.4.241.x/24/24266076rewritten
45.4.240.x/24/23266076rewritten
45.4.243.x/24/22266076rewritten
45.4.245.x/24/21266065natblock
45.4.249.x/24/20266064natblock
45.4.225.x/24/19266060rewritten
45.4.209.x/24/18266086rewritten
45.4.177.x/24/17266097natblock
45.4.113.x/24/16266070natblock
45.5.241.x/24/15266124rewritten
45.6.241.x/24/14UNROUTEDrewritten
45.0.241.x/24/13UNROUTEDrewritten
45.12.241.x/24/12202596rewritten
45.20.241.x/24/117018rewritten
45.36.241.x/24/1011426rewritten
45.68.241.x/24/9UNROUTEDrewritten
45.132.241.x/24/847583rewritten

Meaning of status in Received column:

natblockSpoofed probe packets appear to be blocked by your local NAT or firewall rather than being rewritten with a public source address.
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 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::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
2804:3a30:80xx::/40/120266076yes
2804:3a30:80xx::/40/112266076yes
2804:3a30:80xx::/40/104266076yes
2804:3a30:80xx::/40/96266076yes
2804:3a30:80xx::/40/88266076yes
2804:3a30:80xx::/40/80266076yes
2804:3a30:80xx::/40/72266076yes
2804:3a30:80xx::/40/64266076yes
2804:3a30:80xx::/40/56266076yes
2804:3a30:80xx::/40/48266076yes
2804:3a30:80xx::/40/40266076yes
2804:3a30:xx::/40/32266076yes
2804:3ab0:80xx::/40/24266103yes
2804:ba30:80xx::/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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