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Session Report

Summary:
Test run at: 2024-01-31 15:09:17 GMT
Client Prefix (v4): 130.85.59.x/24
Client AS (v4): 11131 (UMBC-AS)
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 /16
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 (130.85.59.x/24) can spoof 65535 neighboring addresses (within your /16 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
130.85.59.x/24/3111131yes
130.85.59.x/24/3011131yes
130.85.59.x/24/2911131yes
130.85.59.x/24/2811131yes
130.85.59.x/24/2711131yes
130.85.59.x/24/2611131yes
130.85.59.x/24/2511131yes
130.85.59.x/24/2411131yes
130.85.58.x/24/2311131yes
130.85.57.x/24/2211131yes
130.85.63.x/24/2111131yes
130.85.51.x/24/2011131yes
130.85.43.x/24/1911131yes
130.85.27.x/24/1811131yes
130.85.123.x/24/1711131yes
130.85.187.x/24/1611131yes
130.84.59.x/24/151303natblock
130.87.59.x/24/142505natblock
130.81.59.x/24/13701natblock
130.93.59.x/24/1225540natblock
130.69.59.x/24/112501natblock
130.117.59.x/24/1034970natblock
130.21.59.x/24/9UNROUTEDnatblock
130.213.59.x/24/8UNROUTEDnatblock

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 4 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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