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Session Report

Summary:
Test run at: 2021-12-17 08:39:51 GMT
Client Prefix (v4): 92.245.170.x/24
Client AS (v4): 48544 (TECNOADSL-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 /21

Meaning of result status in column:

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 (92.245.170.x/24) can spoof 2047 neighboring addresses (within your /21 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
92.245.170.x/24/3148544yes
92.245.170.x/24/3048544yes
92.245.170.x/24/2948544yes
92.245.170.x/24/2848544natblock
92.245.170.x/24/2748544yes
92.245.170.x/24/2648544yes
92.245.170.x/24/2548544yes
92.245.170.x/24/2448544yes
92.245.171.x/24/2348544yes
92.245.168.x/24/22UNROUTEDnatblock
92.245.174.x/24/2148544yes
92.245.162.x/24/2021086natblock
92.245.186.x/24/1950316natblock
92.245.138.x/24/1848072natblock
92.245.234.x/24/17786natblock
92.245.42.x/24/1628812natblock
92.244.170.x/24/158844natblock
92.247.170.x/24/1429580natblock
92.241.170.x/24/13199420natblock
92.253.170.x/24/1244546natblock
92.229.170.x/24/116805natblock
92.213.170.x/24/103209natblock
92.181.170.x/24/9UNROUTEDnatblock
92.117.170.x/24/88881natblock

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 2 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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