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Session Report

Summary:
Test run at: 2020-08-25 16:40:27 GMT
Client Prefix (v4): 138.219.42.x/24
Client AS (v4): 27823
IPv4 Probes: 75
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 blocked
Routable blocked
Largest spoofable neighbor prefix length none
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 Adjacent Netblock Testing:

Your host (138.219.42.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
138.219.42.x/24/3127823natblock
138.219.42.x/24/3027823natblock
138.219.42.x/24/2927823natblock
138.219.42.x/24/2827823natblock
138.219.42.x/24/2727823natblock
138.219.42.x/24/2627823natblock
138.219.42.x/24/2527823natblock
138.219.42.x/24/2427823natblock
138.219.43.x/24/2327823natblock
138.219.40.x/24/2227823natblock
138.219.46.x/24/21263939natblock
138.219.34.x/24/20263927natblock
138.219.58.x/24/1952510natblock
138.219.10.x/24/18263813natblock
138.219.106.x/24/17263925natblock
138.219.170.x/24/16264017natblock
138.218.42.x/24/15808natblock
138.217.42.x/24/141221natblock
138.223.42.x/24/133303natblock
138.211.42.x/24/12UNROUTEDnatblock
138.203.42.x/24/115488natblock
138.251.42.x/24/10786natblock
138.155.42.x/24/9721natblock
138.91.42.x/24/88075natblock

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.
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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