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Session Report

Summary:
Test run at: 2017-05-17 13:40:56 GMT
Client Prefix (v4): 147.229.207.x/24
Client AS (v4): 197451 (VUTBR-AS)
IPv4 Probes: 117
Client Prefix (v6): 2001:67c:12xx::/40
Client AS (v6): 197451 (VUTBR-AS)
IPv6 Probes: 77
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 /14/48
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 (147.229.207.x/24) can spoof 262143 neighboring addresses (within your /14 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
147.229.207.x/24/31197451yes
147.229.207.x/24/30197451yes
147.229.207.x/24/29197451yes
147.229.207.x/24/28197451yes
147.229.207.x/24/27197451yes
147.229.207.x/24/26197451yes
147.229.207.x/24/25197451yes
147.229.207.x/24/24197451no
147.229.206.x/24/23197451yes
147.229.205.x/24/22197451yes
147.229.203.x/24/21197451yes
147.229.199.x/24/20197451yes
147.229.223.x/24/19197451yes
147.229.239.x/24/18197451yes
147.229.143.x/24/17197451yes
147.229.79.x/24/16197451yes
147.228.207.x/24/152852no
147.231.207.x/24/142852yes
147.225.207.x/24/13701no
147.237.207.x/24/128867no
147.245.207.x/24/11UNROUTEDno
147.197.207.x/24/10786no
147.165.207.x/24/91482no
147.101.207.x/24/8UNROUTEDno

Meaning of status in Received column:

noPackets spoofed from adjacent netblock were not received, probably due to blocking
yesPackets spoofed from adjacent netblock were received
yesPackets spoofed from adjacent netblock were received (but that netblock is within the source AS)

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).
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
2001:4978:1fb:6400::d22001:388:1:5001:21c:c0ff:fea2:4a3ano
2001:49aa:111:aa00::112001:388:1:5001:21c:c0ff:fea2:4a3ano
fd11:1111:1111::11112001:388:1:5001:21c:c0ff:fea2:4a3ano
2001:4978:1fb:6400::d22001:410:102:1::78no
2001:49aa:111:aa00::112001:410:102:1::78no
fd11:1111:1111::11112001:410:102:1::78no
2001:4978:1fb:6400::d22001:410:90ff::5no
2001:49aa:111:aa00::112001:410:90ff::5no
fd11:1111:1111::11112001:410:90ff::5no
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
2001:4978:1fb:6400::d22001:48d0:101:501::247no
2001:49aa:111:aa00::112001:48d0:101:501::247no
fd11:1111:1111::11112001:48d0:101:501::247no
2001:4978:1fb: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
2001:4978:1fb: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
2001:4978:1fb:6400::d22001:708:40:2001:21c:c0ff:fea2:4c5cno
2001:49aa:111:aa00::112001:708:40:2001:21c:c0ff:fea2:4c5cno
fd11:1111:1111::11112001:708:40:2001:21c:c0ff:fea2:4c5cno
2001:4978:1fb:6400::d22001:770:18:7:225:90ff:fe0c:acb4no
2001:49aa:111:aa00::112001:770:18:7:225:90ff:fe0c:acb4no
fd11:1111:1111::11112001:770:18:7:225:90ff:fe0c:acb4no
IPv6 Adjacent Netblock Testing:
Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
2001:67c:12xx::/40/120197451yes
2001:67c:12xx::/40/112197451yes
2001:67c:12xx::/40/104197451yes
2001:67c:12xx::/40/96197451yes
2001:67c:12xx::/40/88197451yes
2001:67c:12xx::/40/80197451yes
2001:67c:12xx::/40/72197451yes
2001:67c:12xx::/40/64197451yes
2001:67c:12xx::/40/56197451yes
2001:67c:12xx::/40/48197451yes
2001:67c:12xx::/40/4041108no
2001:67c:92xx::/40/32UNROUTEDno
2001:6fc:12xx::/40/24UNROUTEDno
2001:867c:12xx::/40/161221no

Meaning of status in Received column:

noPackets spoofed from adjacent netblock were not received, probably due to blocking
yesPackets spoofed from adjacent netblock were received (but that netblock is within the source AS)
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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