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Session Report

Summary:
Test run at: 2020-04-09 13:15:58 GMT
Client Prefix (v4): 187.114.112.x/24
Client AS (v4): 18881
IPv4 Probes: 75
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 blocked
Routable received
Largest spoofable neighbor prefix length /8
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 (187.114.112.x/24) can spoof 16777215 neighboring addresses (within your /8 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
187.114.112.x/24/3118881yes
187.114.112.x/24/3018881yes
187.114.112.x/24/2918881yes
187.114.112.x/24/2818881yes
187.114.112.x/24/2718881yes
187.114.112.x/24/2618881yes
187.114.112.x/24/2518881yes
187.114.112.x/24/2418881yes
187.114.113.x/24/2318881yes
187.114.114.x/24/2218881yes
187.114.116.x/24/2118881natblock
187.114.120.x/24/2018881yes
187.114.96.x/24/1918881natblock
187.114.80.x/24/1810429yes
187.114.48.x/24/1718881yes
187.114.240.x/24/1618881yes
187.115.112.x/24/1510429yes
187.112.112.x/24/1418881yes
187.118.112.x/24/1326599yes
187.122.112.x/24/1228573yes
187.98.112.x/24/1126615yes
187.82.112.x/24/1026615yes
187.50.112.x/24/910429yes
187.242.112.x/24/813999yes

Meaning of status in Received column:

yesPackets spoofed from adjacent netblock were received
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 10 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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