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Session Report

Summary:
Test run at: 2021-04-21 12:24:15 GMT
Client Prefix (v4): 189.90.104.x/24
Client AS (v4): 28634
IPv4 Probes: 66
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 blocked
Routable blocked
Largest spoofable neighbor prefix length /20

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 (189.90.104.x/24) can spoof 4095 neighboring addresses (within your /20 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
189.90.104.x/24/3128634yes
189.90.104.x/24/3028634yes
189.90.104.x/24/2928634yes
189.90.104.x/24/2828634yes
189.90.104.x/24/2728634yes
189.90.104.x/24/2628634yes
189.90.104.x/24/2528634yes
189.90.104.x/24/2428634yes
189.90.105.x/24/2328634yes
189.90.106.x/24/2228634yes
189.90.108.x/24/2128634yes
189.90.96.x/24/2028634yes
189.90.120.x/24/19262808natblock
189.90.72.x/24/1828193natblock
189.90.40.x/24/1728191natblock
189.90.232.x/24/16270679natblock
189.91.104.x/24/15262589natblock
189.88.104.x/24/144230natblock
189.94.104.x/24/1322085natblock
189.82.104.x/24/127738natblock
189.74.104.x/24/118167natblock
189.122.104.x/24/1028573natblock
189.26.104.x/24/918881natblock
189.218.104.x/24/811888natblock

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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