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Session Report

Summary:
Test run at: 2022-01-14 18:32:30 GMT
Client Prefix (v4): 175.118.138.x/24
Client AS (v4): 9318 (SKB-AS)
IPv4 Probes: 63
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 blocked
Routable blocked
Largest spoofable neighbor prefix length /24
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.
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 (175.118.138.x/24) can spoof 255 neighboring addresses (within your /24 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
175.118.138.x/24/319318yes
175.118.138.x/24/309318yes
175.118.138.x/24/299318yes
175.118.138.x/24/289318yes
175.118.138.x/24/279318yes
175.118.138.x/24/269318yes
175.118.138.x/24/259318yes
175.118.138.x/24/249318yes
175.118.139.x/24/239318natblock
175.118.136.x/24/229318natblock
175.118.142.x/24/219318natblock
175.118.130.x/24/209318natblock
175.118.154.x/24/199318natblock
175.118.170.x/24/189318natblock
175.118.202.x/24/179318natblock
175.118.10.x/24/169318natblock
175.119.138.x/24/159318natblock
175.116.138.x/24/149318natblock
175.114.138.x/24/139318natblock
175.126.138.x/24/129318natblock
175.102.138.x/24/11UNROUTEDnatblock
175.86.138.x/24/109394natblock
175.54.138.x/24/99394natblock
175.246.138.x/24/84766natblock

Meaning of status in Received column:

yesPackets spoofed from adjacent netblock were received (but that netblock is within the source AS)
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 3 IP hop(s).
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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