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Session Report

Summary:
Test run at: 2021-12-09 13:10:59 GMT
Client Prefix (v4): 203.129.26.x/24
Client AS (v4): 4764 (WIDEBAND-AS-AP)
IPv4 Probes: 66
Client Prefix (v6): 2403:5800:71xx::/40
Client AS (v6): 4764 (WIDEBAND-AS-AP)
IPv6 Probes: 56
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA unknownunknown
Routable unknownunknown
Largest spoofable neighbor prefix length nonenone

Meaning of result status in column:

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


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
203.129.26.x/24/314764natblock
203.129.26.x/24/304764natblock
203.129.26.x/24/294764natblock
203.129.26.x/24/284764natblock
203.129.26.x/24/274764natblock
203.129.26.x/24/264764natblock
203.129.26.x/24/254764natblock
203.129.26.x/24/244764natblock
203.129.27.x/24/234764natblock
203.129.24.x/24/224764natblock
203.129.30.x/24/214764natblock
203.129.18.x/24/204764natblock
203.129.10.x/24/194809natblock
203.129.58.x/24/187545natblock
203.129.90.x/24/1710032natblock
203.129.154.x/24/164826natblock
203.128.26.x/24/1517911natblock
203.131.26.x/24/14UNROUTEDnatblock
203.133.26.x/24/139416natblock
203.137.26.x/24/122554natblock
203.145.26.x/24/11UNROUTEDnatblock
203.161.26.x/24/10138823natblock
203.193.26.x/24/924304natblock
203.1.26.x/24/8UNROUTEDnatblock

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.

IPv4 Outbound Filtering Depth:

The tracefilter test found your host able to spoof routable, non-adjacent source addresses through the first 1 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 Adjacent Netblock Testing:
Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
2403:5800:71xx::/40/1204764no
2403:5800:71xx::/40/1124764no
2403:5800:71xx::/40/1044764no
2403:5800:71xx::/40/964764no
2403:5800:71xx::/40/884764no
2403:5800:71xx::/40/804764no
2403:5800:71xx::/40/724764no
2403:5800:71xx::/40/644764no
2403:5800:71xx::/40/564764no
2403:5800:71xx::/40/484764no
2403:5800:71xx::/40/404764no
2403:5800:f1xx::/40/324764no
2403:5880:71xx::/40/24UNROUTEDno
2403:d800:71xx::/40/16UNROUTEDno

Meaning of status in Received column:

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