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Session Report

Summary:
Test run at: 2024-07-22 17:25:57 GMT
Client Prefix (v4): 196.49.5.x/24
Client AS (v4): 327844 (TISPA-TIX-MANAGEMENT)
IPv4 Probes: 69
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 blocked
Routable blocked
Largest spoofable neighbor prefix length /30
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 (196.49.5.x/24) can spoof 3 neighboring addresses (within your /30 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
196.49.5.x/24/31327844yes
196.49.5.x/24/30327844yes
196.49.5.x/24/29327844natblock
196.49.5.x/24/28327844natblock
196.49.5.x/24/27327844natblock
196.49.5.x/24/26327844natblock
196.49.5.x/24/25327844natblock
196.49.5.x/24/24327844natblock
196.49.4.x/24/23UNROUTEDnatblock
196.49.7.x/24/22328014natblock
196.49.1.x/24/21UNROUTEDnatblock
196.49.13.x/24/20UNROUTEDnatblock
196.49.21.x/24/19UNROUTEDnatblock
196.49.37.x/24/18UNROUTEDnatblock
196.49.69.x/24/17328452natblock
196.49.133.x/24/16UNROUTEDnatblock
196.48.5.x/24/1537518natblock
196.51.5.x/24/14400463natblock
196.53.5.x/24/13UNROUTEDnatblock
196.57.5.x/24/1237518natblock
196.33.5.x/24/113741natblock
196.17.5.x/24/10UNROUTEDnatblock
196.113.5.x/24/936925natblock
196.177.5.x/24/837693natblock

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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