Logo

Session Report

Summary:
Test run at: 2021-07-26 16:23:54 GMT
Client Prefix (v4): 195.133.201.x/24
Client AS (v4): 48347 (MTW-AS)
IPv4 Probes: 66
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 rewritten
Routable rewritten
Largest spoofable neighbor prefix length none

Meaning of result status in column:

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


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
195.133.201.x/24/3148347rewritten
195.133.201.x/24/3048347rewritten
195.133.201.x/24/2948347rewritten
195.133.201.x/24/2848347rewritten
195.133.201.x/24/2748347rewritten
195.133.201.x/24/2648347rewritten
195.133.201.x/24/2548347rewritten
195.133.201.x/24/2448347rewritten
195.133.200.x/24/2329076rewritten
195.133.203.x/24/22209706rewritten
195.133.205.x/24/2142666rewritten
195.133.193.x/24/2040676rewritten
195.133.217.x/24/1929226rewritten
195.133.233.x/24/18196695rewritten
195.133.137.x/24/1718106rewritten
195.133.73.x/24/16UNROUTEDrewritten
195.132.201.x/24/1515557rewritten
195.135.201.x/24/1444936rewritten
195.129.201.x/24/13702rewritten
195.141.201.x/24/126730rewritten
195.149.201.x/24/1129407rewritten
195.165.201.x/24/101759rewritten
195.197.201.x/24/9719rewritten
195.5.201.x/24/860032rewritten

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