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Session Report

Summary:
Test run at: 2023-04-02 09:50:01 GMT
Client Prefix (v4): 103.167.135.x/24
Client AS (v4): 38136 (AKARI-NETWORKS-AS-AP)
IPv4 Probes: 60
Client Prefix (v6): 2407:cdc0:afxx::/40
Client AS (v6): 38136 (AKARI-NETWORKS-AS-AP)
IPv6 Probes: 52
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA unknownrewritten
Routable unknownreceived
Largest spoofable neighbor prefix length nonenone
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 (103.167.135.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
103.167.135.x/24/3138136no
103.167.135.x/24/3038136no
103.167.135.x/24/2938136no
103.167.135.x/24/2838136no
103.167.135.x/24/2738136no
103.167.135.x/24/2638136no
103.167.135.x/24/2538136no
103.167.135.x/24/2438136no
103.167.134.x/24/2338136no
103.167.133.x/24/22139456no
103.167.131.x/24/21137127no
103.167.143.x/24/209875no
103.167.151.x/24/1963473no
103.167.167.x/24/18141984no
103.167.199.x/24/17140833no
103.167.7.x/24/16UNROUTEDno
103.166.135.x/24/15142114no
103.165.135.x/24/1417995no
103.163.135.x/24/13141902no
103.175.135.x/24/12UNROUTEDno
103.183.135.x/24/11133296no
103.135.135.x/24/1058689no
103.231.135.x/24/959361no
103.39.135.x/24/8133694no

Meaning of status in Received column:

noPackets spoofed from adjacent netblock were not received, probably due to blocking

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
IPv6 Adjacent Netblock Testing:
Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
2407:cdc0:afxx::/40/12038136rewritten
2407:cdc0:afxx::/40/11238136rewritten
2407:cdc0:afxx::/40/10438136rewritten
2407:cdc0:afxx::/40/9638136rewritten
2407:cdc0:afxx::/40/8838136rewritten
2407:cdc0:afxx::/40/8038136rewritten
2407:cdc0:afxx::/40/7238136rewritten
2407:cdc0:afxx::/40/6438136rewritten
2407:cdc0:afxx::/40/5638136rewritten
2407:cdc0:afxx::/40/4838136rewritten
2407:cdc0:afxx::/40/4038136rewritten
2407:cdc0:2fxx::/40/32UNROUTEDrewritten
2407:cd40:afxx::/40/24UNROUTEDrewritten
2407:4dc0:afxx::/40/16UNROUTEDrewritten

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.
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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