Logo

Session Report

Summary:
Test run at: 2022-03-03 12:10:36 GMT
Client Prefix (v4): 152.255.101.x/24
Client AS (v4): 26599
IPv4 Probes: 60
Client Prefix (v6): 2804:18:40xx::/40
Client AS (v6): 26599
IPv6 Probes: 56
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA unknownunknown
Routable unknownunknown
Largest spoofable neighbor prefix length nonenone
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 (152.255.101.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
152.255.101.x/24/3126599sendto
152.255.101.x/24/3026599sendto
152.255.101.x/24/2926599sendto
152.255.101.x/24/2826599sendto
152.255.101.x/24/2726599sendto
152.255.101.x/24/2626599sendto
152.255.101.x/24/2526599sendto
152.255.101.x/24/2426599sendto
152.255.100.x/24/2326599sendto
152.255.103.x/24/2226599sendto
152.255.97.x/24/2126599sendto
152.255.109.x/24/2026599sendto
152.255.117.x/24/1926599sendto
152.255.69.x/24/1826599sendto
152.255.37.x/24/1726599sendto
152.255.229.x/24/1626599sendto
152.254.101.x/24/1526599natblock
152.253.101.x/24/1426599sendto
152.251.101.x/24/1326599sendto
152.247.101.x/24/1210429sendto
152.239.101.x/24/117738sendto
152.223.101.x/24/10UNROUTEDsendto
152.191.101.x/24/9701sendto
152.127.101.x/24/8UNROUTEDsendto

Meaning of status in Received column:

natblockSpoofed probe packets appear to be blocked by your local NAT or firewall rather than being rewritten with a public source address.
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.
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
2804:18:40xx::/40/12026599sendto
2804:18:40xx::/40/11226599sendto
2804:18:40xx::/40/10426599sendto
2804:18:40xx::/40/9626599sendto
2804:18:40xx::/40/8826599sendto
2804:18:40xx::/40/8026599sendto
2804:18:40xx::/40/7226599sendto
2804:18:40xx::/40/6426599sendto
2804:18:40xx::/40/5626599sendto
2804:18:40xx::/40/4826599sendto
2804:18:40xx::/40/4026599sendto
2804:18:c0xx::/40/32UNROUTEDsendto
2804:98:40xx::/40/24UNROUTEDsendto
2804:8018:40xx::/40/16271729sendto

Meaning of status in Received column:

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