Logo

Session Report

Summary:
Test run at: 2023-09-27 15:15:20 GMT
Client Prefix (v4): 45.238.74.x/24
Client AS (v4): 268328
IPv4 Probes: 69
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 rewritten
Routable received
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 (45.238.74.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
45.238.74.x/24/31268328rewritten
45.238.74.x/24/30268328rewritten
45.238.74.x/24/29268328rewritten
45.238.74.x/24/28268328rewritten
45.238.74.x/24/27268328rewritten
45.238.74.x/24/26268328rewritten
45.238.74.x/24/25268328rewritten
45.238.74.x/24/24268328rewritten
45.238.75.x/24/23268328rewritten
45.238.72.x/24/22268328rewritten
45.238.78.x/24/21268319rewritten
45.238.66.x/24/20268321rewritten
45.238.90.x/24/19268318rewritten
45.238.106.x/24/18264758rewritten
45.238.10.x/24/17266825rewritten
45.238.202.x/24/16268360rewritten
45.239.74.x/24/15268355rewritten
45.236.74.x/24/14268225rewritten
45.234.74.x/24/13267364rewritten
45.230.74.x/24/12264857rewritten
45.254.74.x/24/1123724rewritten
45.206.74.x/24/10984rewritten
45.174.74.x/24/928433rewritten
45.110.74.x/24/837069rewritten

Meaning of status in Received column:

rewrittenThe source address of the probe packets we received differs from the spoofed address. It appears that an intermediate device is rewriting your packet headers.

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