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Session Report

Summary:
Test run at: 2022-12-29 17:27:49 GMT
Client Prefix (v4): 177.91.159.x/24
Client AS (v4): 263442
IPv4 Probes: 60
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 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 (177.91.159.x/24) can spoof 63 neighboring addresses (within your /26 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
177.91.159.x/24/31263442natblock
177.91.159.x/24/30263442natblock
177.91.159.x/24/29263442natblock
177.91.159.x/24/28263442natblock
177.91.159.x/24/27263442yes
177.91.159.x/24/26263442yes
177.91.159.x/24/25263442natblock
177.91.159.x/24/24263442natblock
177.91.158.x/24/23263442natblock
177.91.157.x/24/22263442natblock
177.91.155.x/24/21263442natblock
177.91.151.x/24/20263442natblock
177.91.143.x/24/19263295natblock
177.91.191.x/24/1828306natblock
177.91.223.x/24/1752945natblock
177.91.31.x/24/1661895natblock
177.90.159.x/24/1528571natblock
177.89.159.x/24/1428220natblock
177.95.159.x/24/1327699natblock
177.83.159.x/24/1228573natblock
177.75.159.x/24/1128146natblock
177.123.159.x/24/1026615natblock
177.27.159.x/24/926599natblock
177.219.159.x/24/826615natblock

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 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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