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Session Report

Summary:
Test run at: 2022-09-02 03:35:18 GMT
Client Prefix (v4): 203.168.29.x/24
Client AS (v4): 137692 (CHINATELECOM-IOT-GUANGDONG-Network)
IPv4 Probes: 60
Client Prefix (v6): 240e:87c:7xx::/40
Client AS (v6): 137692 (CHINATELECOM-IOT-GUANGDONG-Network)
IPv6 Probes: 52
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA rewrittenrewritten
Routable rewrittenrewritten
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 (203.168.29.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
203.168.29.x/24/31137692rewritten
203.168.29.x/24/30137692rewritten
203.168.29.x/24/29137692rewritten
203.168.29.x/24/28137692rewritten
203.168.29.x/24/27137692rewritten
203.168.29.x/24/26137692rewritten
203.168.29.x/24/25137692rewritten
203.168.29.x/24/24137692rewritten
203.168.28.x/24/23137692rewritten
203.168.31.x/24/22137692rewritten
203.168.25.x/24/21137692rewritten
203.168.21.x/24/20137692rewritten
203.168.13.x/24/19137692rewritten
203.168.61.x/24/1824395rewritten
203.168.93.x/24/1718144rewritten
203.168.157.x/24/169513rewritten
203.169.29.x/24/1538315rewritten
203.170.29.x/24/14UNROUTEDrewritten
203.172.29.x/24/137629rewritten
203.160.29.x/24/1224277rewritten
203.184.29.x/24/119790rewritten
203.136.29.x/24/102518rewritten
203.232.29.x/24/94766rewritten
203.40.29.x/24/81221rewritten

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 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
240e:87c:7xx::/40/120137692rewritten
240e:87c:7xx::/40/112137692rewritten
240e:87c:7xx::/40/104137692rewritten
240e:87c:7xx::/40/96137692rewritten
240e:87c:7xx::/40/88137692rewritten
240e:87c:7xx::/40/80137692rewritten
240e:87c:7xx::/40/72137692rewritten
240e:87c:7xx::/40/64137692rewritten
240e:87c:7xx::/40/56137692rewritten
240e:87c:7xx::/40/48137692rewritten
240e:87c:7xx::/40/40137692rewritten
240e:87c:87xx::/40/324134rewritten
240e:8fc:7xx::/40/244134rewritten
240e:887c:7xx::/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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