Logo

Session Report

Summary:
Test run at: 2021-10-19 19:33:44 GMT
Client Prefix (v4): 58.200.241.x/24
Client AS (v4): 4538 (ERX-CERNET-BKB)
IPv4 Probes: 66
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 unknown
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 (58.200.241.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
58.200.241.x/24/314538sendto
58.200.241.x/24/304538sendto
58.200.241.x/24/294538sendto
58.200.241.x/24/284538sendto
58.200.241.x/24/274538sendto
58.200.241.x/24/264538sendto
58.200.241.x/24/254538sendto
58.200.241.x/24/244538sendto
58.200.240.x/24/234538sendto
58.200.243.x/24/224538sendto
58.200.245.x/24/214538sendto
58.200.249.x/24/204538sendto
58.200.225.x/24/194538sendto
58.200.209.x/24/184538sendto
58.200.177.x/24/174538sendto
58.200.113.x/24/164538sendto
58.201.241.x/24/154538sendto
58.202.241.x/24/144538sendto
58.204.241.x/24/134538sendto
58.192.241.x/24/124538sendto
58.216.241.x/24/114134sendto
58.232.241.x/24/109318sendto
58.136.241.x/24/945430sendto
58.72.241.x/24/83786sendto

Meaning of status in Received column:

sendtoThe spoofer client was unable to send spoofed headers due to an operating system restriction.

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