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Session Report

Summary:
Test run at: 2020-08-24 14:42:58 GMT
Client Prefix (v4): 83.170.73.x/24
Client AS (v4): 13213 (UK2NET-AS)
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 /26
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 (83.170.73.x/24) can spoof 63 neighboring addresses (within your /26 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
83.170.73.x/24/3113213yes
83.170.73.x/24/3013213yes
83.170.73.x/24/2913213yes
83.170.73.x/24/2813213yes
83.170.73.x/24/2713213yes
83.170.73.x/24/2613213yes
83.170.73.x/24/2513213natblock
83.170.73.x/24/2413213natblock
83.170.72.x/24/2313213natblock
83.170.75.x/24/2213213natblock
83.170.77.x/24/2113213natblock
83.170.65.x/24/2013213natblock
83.170.89.x/24/1913213natblock
83.170.105.x/24/1813213natblock
83.170.9.x/24/1729259natblock
83.170.201.x/24/1612530natblock
83.171.73.x/24/1512389natblock
83.168.73.x/24/1431304natblock
83.174.73.x/24/1329217natblock
83.162.73.x/24/123265natblock
83.186.73.x/24/111257natblock
83.138.73.x/24/1034895natblock
83.234.73.x/24/920485natblock
83.42.73.x/24/83352natblock

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 1 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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