Logo

Session Report

Summary:
Test run at: 2018-04-30 09:38:06 GMT
Client Prefix (v4): 217.194.176.x/24
Client AS (v4): 33986 (ASN-REDDER)
IPv4 Probes: 99
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 rewritten
Routable blocked
Largest spoofable neighbor prefix length /20

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 (217.194.176.x/24) can spoof 4095 neighboring addresses (within your /20 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
217.194.176.x/24/3133986yes
217.194.176.x/24/3033986yes
217.194.176.x/24/2933986yes
217.194.176.x/24/2833986yes
217.194.176.x/24/2733986yes
217.194.176.x/24/2633986yes
217.194.176.x/24/2533986yes
217.194.176.x/24/2433986yes
217.194.177.x/24/2333986yes
217.194.178.x/24/2233986yes
217.194.180.x/24/2133986yes
217.194.184.x/24/2033986yes
217.194.160.x/24/195610natblock
217.194.144.x/24/188513natblock
217.194.240.x/24/1733993natblock
217.194.48.x/24/1641622natblock
217.195.176.x/24/1531027natblock
217.192.176.x/24/143303natblock
217.198.176.x/24/1334217natblock
217.202.176.x/24/1216232natblock
217.210.176.x/24/113301natblock
217.226.176.x/24/103320natblock
217.130.176.x/24/912430natblock
217.66.176.x/24/8204332natblock

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.
Last Modified