Logo

Session Report

Summary:
Test run at: 2020-01-19 09:24:41 GMT
Client Prefix (v4): 210.128.154.x/24
Client AS (v4): 2497 (IIJ)
IPv4 Probes: 75
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 rewritten
Routable blocked
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 (210.128.154.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
210.128.154.x/24/312497natblock
210.128.154.x/24/302497natblock
210.128.154.x/24/292497natblock
210.128.154.x/24/282497natblock
210.128.154.x/24/272497natblock
210.128.154.x/24/262497natblock
210.128.154.x/24/252497natblock
210.128.154.x/24/242497natblock
210.128.155.x/24/232497natblock
210.128.152.x/24/222497natblock
210.128.158.x/24/212497natblock
210.128.146.x/24/202497natblock
210.128.138.x/24/192497natblock
210.128.186.x/24/182497natblock
210.128.218.x/24/172497natblock
210.128.26.x/24/162497natblock
210.129.154.x/24/154694natblock
210.130.154.x/24/142497natblock
210.132.154.x/24/132527natblock
210.136.154.x/24/122514natblock
210.144.154.x/24/114673natblock
210.160.154.x/24/104713natblock
210.192.154.x/24/99924natblock
210.0.154.x/24/89304natblock

Meaning of status in Received column:

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 2 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