Logo

Session Report

Summary:
Test run at: 2021-12-13 15:21:46 GMT
Client Prefix (v4): 191.243.120.x/24
Client AS (v4): 53135
IPv4 Probes: 66
Client Prefix (v6): 2804:1054:eexx::/40
Client AS (v6): 53135
IPv6 Probes: 56
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 /20/32
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 (191.243.120.x/24) can spoof 4095 neighboring addresses (within your /20 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
191.243.120.x/24/3153135yes
191.243.120.x/24/3053135yes
191.243.120.x/24/2953135yes
191.243.120.x/24/2853135yes
191.243.120.x/24/2753135yes
191.243.120.x/24/2653135yes
191.243.120.x/24/2553135yes
191.243.120.x/24/2453135yes
191.243.121.x/24/2353135yes
191.243.122.x/24/2253135yes
191.243.124.x/24/2153135yes
191.243.112.x/24/2053135yes
191.243.104.x/24/19263501no
191.243.88.x/24/1828210no
191.243.56.x/24/17263496no
191.243.248.x/24/1652980no
191.242.120.x/24/15262851no
191.241.120.x/24/14263034no
191.247.120.x/24/1322085no
191.251.120.x/24/1218881no
191.227.120.x/24/1126615no
191.211.120.x/24/1026599no
191.179.120.x/24/928573no
191.115.120.x/24/87418no

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)

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 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
2804:1054:eexx::/40/12053135yes
2804:1054:eexx::/40/11253135yes
2804:1054:eexx::/40/10453135yes
2804:1054:eexx::/40/9653135yes
2804:1054:eexx::/40/8853135yes
2804:1054:eexx::/40/8053135yes
2804:1054:eexx::/40/7253135yes
2804:1054:eexx::/40/6453135yes
2804:1054:eexx::/40/5653135yes
2804:1054:eexx::/40/4853135yes
2804:1054:eexx::/40/4053135yes
2804:1054:6exx::/40/3253135yes
2804:10d4:eexx::/40/24262376no
2804:9054:eexx::/40/16UNROUTEDno

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.
Last Modified