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Session Report

Summary:
Test run at: 2019-09-09 12:07:51 GMT
Client Prefix (v4): 141.226.87.x/24
Client AS (v4): 210290 (Oasis-AS)
IPv4 Probes: 72
Client Prefix (v6): 2001:67c:10xx::/40
Client AS (v6): 210290 (Oasis-AS)
IPv6 Probes: 64
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
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 (141.226.87.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
141.226.87.x/24/31210290natblock
141.226.87.x/24/30210290natblock
141.226.87.x/24/29210290natblock
141.226.87.x/24/28210290natblock
141.226.87.x/24/27210290natblock
141.226.87.x/24/26210290natblock
141.226.87.x/24/25210290natblock
141.226.87.x/24/24210290natblock
141.226.86.x/24/23UNROUTEDnatblock
141.226.85.x/24/22206174natblock
141.226.83.x/24/2151825natblock
141.226.95.x/24/2016116natblock
141.226.71.x/24/1947956natblock
141.226.119.x/24/18206174natblock
141.226.23.x/24/1747956natblock
141.226.215.x/24/1650463natblock
141.227.87.x/24/15UNROUTEDnatblock
141.224.87.x/24/1418454natblock
141.230.87.x/24/13UNROUTEDnatblock
141.234.87.x/24/12721natblock
141.242.87.x/24/11UNROUTEDnatblock
141.194.87.x/24/10UNROUTEDnatblock
141.162.87.x/24/919661natblock
141.98.87.x/24/8202723natblock

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 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 Adjacent Netblock Testing:
Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
2001:67c:10xx::/40/120210290no
2001:67c:10xx::/40/112210290no
2001:67c:10xx::/40/104210290no
2001:67c:10xx::/40/96210290no
2001:67c:10xx::/40/88210290no
2001:67c:10xx::/40/80210290no
2001:67c:10xx::/40/72210290no
2001:67c:10xx::/40/64210290no
2001:67c:10xx::/40/56210290no
2001:67c:10xx::/40/48210290no
2001:67c:10xx::/40/40UNROUTEDno
2001:67c:90xx::/40/32UNROUTEDno
2001:6fc:10xx::/40/24UNROUTEDno
2001:867c:10xx::/40/161221no

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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