Logo

Session Report

Summary:
Test run at: 2020-10-04 15:13:50 GMT
Client Prefix (v4): 155.4.222.x/24
Client AS (v4): 8473 (BAHNHOF)
IPv4 Probes: 75
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 rewritten
Routable rewritten
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 (155.4.222.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
155.4.222.x/24/318473rewritten
155.4.222.x/24/308473rewritten
155.4.222.x/24/298473rewritten
155.4.222.x/24/288473rewritten
155.4.222.x/24/278473rewritten
155.4.222.x/24/268473rewritten
155.4.222.x/24/258473rewritten
155.4.222.x/24/248473rewritten
155.4.223.x/24/238473rewritten
155.4.220.x/24/228473rewritten
155.4.218.x/24/218473rewritten
155.4.214.x/24/208473rewritten
155.4.206.x/24/198473rewritten
155.4.254.x/24/188473rewritten
155.4.158.x/24/178473rewritten
155.4.94.x/24/168473rewritten
155.5.222.x/24/151637rewritten
155.6.222.x/24/141637rewritten
155.0.222.x/24/1337532rewritten
155.12.222.x/24/12UNROUTEDrewritten
155.20.222.x/24/11UNROUTEDrewritten
155.36.222.x/24/10UNROUTEDrewritten
155.68.222.x/24/931746rewritten
155.132.222.x/24/8UNROUTEDrewritten

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