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Session Report

Summary:
Test run at: 2017-11-07 18:55:15 GMT
Client Prefix (v4): 41.188.162.x/24
Client AS (v4): 37084 (simbanet-tz)
IPv4 Probes: 105
Client Prefix (v6): 2001:4258:xx::/40
Client AS (v6): 37084 (simbanet-tz)
IPv6 Probes: 71
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA unknownblocked
Routable unknownblocked
Largest spoofable neighbor prefix length /30/48
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.
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 (41.188.162.x/24) can spoof 3 neighboring addresses (within your /30 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
41.188.162.x/24/3137084yes
41.188.162.x/24/3037084yes
41.188.162.x/24/2937084natblock
41.188.162.x/24/2837084natblock
41.188.162.x/24/2737084natblock
41.188.162.x/24/2637084natblock
41.188.162.x/24/2537084natblock
41.188.162.x/24/2437084natblock
41.188.163.x/24/2337084natblock
41.188.160.x/24/2237084natblock
41.188.166.x/24/2137084natblock
41.188.170.x/24/2037084natblock
41.188.178.x/24/1937084natblock
41.188.130.x/24/1837084natblock
41.188.226.x/24/172018natblock
41.188.34.x/24/1637054natblock
41.189.162.x/24/1530986natblock
41.190.162.x/24/14UNROUTEDnatblock
41.184.162.x/24/1329091natblock
41.180.162.x/24/12UNROUTEDnatblock
41.172.162.x/24/1136937natblock
41.156.162.x/24/1037168natblock
41.252.162.x/24/921003natblock
41.60.162.x/24/830844natblock

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 unable to spoof routable, non-adjacent source addresses through even the first IP hop.
IPv6 probes:
Spoofed source addressDestinationReceived
IPv6 Adjacent Netblock Testing:
Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
2001:4258:xx::/40/12037084yes
2001:4258:xx::/40/11237084yes
2001:4258:xx::/40/10437084yes
2001:4258:xx::/40/9637084yes
2001:4258:xx::/40/8837084yes
2001:4258:xx::/40/8037084yes
2001:4258:xx::/40/7237084yes
2001:4258:xx::/40/6437084yes
2001:4258:xx::/40/5637084yes
2001:4258:xx::/40/4837084yes
2001:4258:xx::/40/4037084natblock
2001:4258:80xx::/40/3237084natblock
2001:42d8:xx::/40/24UNROUTEDnatblock
2001:c258:xx::/40/16UNROUTEDnatblock

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.
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.
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