Logo

Session Report

Summary:
Test run at: 2023-06-10 22:31:52 GMT
Client Prefix (v4): 191.253.18.x/24
Client AS (v4): 262773
IPv4 Probes: 60
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 unknown
Routable unknown
Largest spoofable neighbor prefix length none
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.

Warnings:

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 (191.253.18.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
191.253.18.x/24/31262773sendto
191.253.18.x/24/30262773sendto
191.253.18.x/24/29262773sendto
191.253.18.x/24/28262773sendto
191.253.18.x/24/27262773sendto
191.253.18.x/24/26262773sendto
191.253.18.x/24/25262773sendto
191.253.18.x/24/24262773sendto
191.253.19.x/24/23262773sendto
191.253.16.x/24/22262773sendto
191.253.22.x/24/21263526sendto
191.253.26.x/24/20263524sendto
191.253.2.x/24/1953080sendto
191.253.50.x/24/18272539sendto
191.253.82.x/24/1752768sendto
191.253.146.x/24/1611338sendto
191.252.18.x/24/1527715sendto
191.255.18.x/24/1427699sendto
191.249.18.x/24/1318881sendto
191.245.18.x/24/1222085sendto
191.237.18.x/24/118075sendto
191.221.18.x/24/108167sendto
191.189.18.x/24/928573sendto
191.125.18.x/24/87418sendto

Meaning of status in Received column:

sendtoThe spoofer client was unable to send spoofed headers due to an operating system restriction.

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.
Last Modified