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Session Report

Summary:
Test run at: 2022-09-28 06:28:54 GMT
Client Prefix (v4): 129.177.196.x/24
Client AS (v4): 224 (UNINETT)
IPv4 Probes: 60
Client Prefix (v6): 2001:700:2xx::/40
Client AS (v6): 224 (UNINETT)
IPv6 Probes: 52
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA blockedblocked
Routable blockedblocked
Largest spoofable neighbor prefix length /9none
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 (129.177.196.x/24) can spoof 8388607 neighboring addresses (within your /9 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
129.177.196.x/24/31224yes
129.177.196.x/24/30224yes
129.177.196.x/24/29224yes
129.177.196.x/24/28224yes
129.177.196.x/24/27224yes
129.177.196.x/24/26224yes
129.177.196.x/24/25224yes
129.177.196.x/24/24224yes
129.177.197.x/24/23224yes
129.177.198.x/24/22224yes
129.177.192.x/24/21224yes
129.177.204.x/24/20224yes
129.177.212.x/24/19224yes
129.177.228.x/24/18224yes
129.177.132.x/24/17224yes
129.177.68.x/24/16224yes
129.176.196.x/24/157973natblock
129.179.196.x/24/1419812natblock
129.181.196.x/24/133215natblock
129.185.196.x/24/123215natblock
129.161.196.x/24/1191natblock
129.145.196.x/24/1043894natblock
129.241.196.x/24/9224yes
129.49.196.x/24/85719natblock

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 5 IP hop(s).
IPv6 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.

  

  
IPv6 probes:
Spoofed source addressDestinationReceived
2001:48d0:101:501::1592001:48d0:101:501::242no
2001:4978:1fb:6400::d22001:48d0:101:501::242no
2001:49aa:111:aa00::112001:48d0:101:501::242no
fd11:1111:1111::11112001:48d0:101:501::242no
2001:48d0:101:501::1592001:48d0:101:501::247no
2001:4978:1fb:6400::d22001:48d0:101:501::247no
2001:49aa:111:aa00::112001:48d0:101:501::247no
fd11:1111:1111::11112001:48d0:101:501::247no
2001:48d0:101:501::1592001:610:510:115:192:42:115:98no
2001:4978:1fb:6400::d22001:610:510:115:192:42:115:98no
2001:49aa:111:aa00::112001:610:510:115:192:42:115:98no
fd11:1111:1111::11112001:610:510:115:192:42:115:98no
2001:48d0:101:501::1592001:630:212:225:225:90ff:fe0c:45a6no
2001:4978:1fb:6400::d22001:630:212:225:225:90ff:fe0c:45a6no
2001:49aa:111:aa00::112001:630:212:225:225:90ff:fe0c:45a6no
fd11:1111:1111::11112001:630:212:225:225:90ff:fe0c:45a6no
2001:48d0:101:501::1592001:770:1c:7:225:90ff:fe0c:acb4no
2001:4978:1fb:6400::d22001:770:1c:7:225:90ff:fe0c:acb4no
2001:49aa:111:aa00::112001:770:1c:7:225:90ff:fe0c:acb4no
fd11:1111:1111::11112001:770:1c:7:225:90ff:fe0c:acb4no
IPv6 Adjacent Netblock Testing:
Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
2001:700:2xx::/40/120224no
2001:700:2xx::/40/112224no
2001:700:2xx::/40/104224no
2001:700:2xx::/40/96224no
2001:700:2xx::/40/88224no
2001:700:2xx::/40/80224no
2001:700:2xx::/40/72224no
2001:700:2xx::/40/64224no
2001:700:2xx::/40/56224no
2001:700:2xx::/40/48224no
2001:700:2xx::/40/40224no
2001:700:82xx::/40/32224no
2001:780:2xx::/40/2412337no
2001:8700:2xx::/40/161221no

Meaning of status in Received column:

noPackets spoofed from adjacent netblock were not received, probably due to blocking
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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