Logo

Session Report

Summary:
Test run at: 2023-12-28 22:47:13 GMT
Client Prefix (v4): 84.194.18.x/24
Client AS (v4): 6848 (TELENET-AS)
IPv4 Probes: 69
Client Prefix (v6): 2a02:1810:9cxx::/40
Client AS (v6): 6848 (TELENET-AS)
IPv6 Probes: 60
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 none/72
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 (84.194.18.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
84.194.18.x/24/316848natblock
84.194.18.x/24/306848natblock
84.194.18.x/24/296848natblock
84.194.18.x/24/286848natblock
84.194.18.x/24/276848natblock
84.194.18.x/24/266848natblock
84.194.18.x/24/256848natblock
84.194.18.x/24/246848natblock
84.194.19.x/24/236848natblock
84.194.16.x/24/226848natblock
84.194.22.x/24/216848natblock
84.194.26.x/24/206848natblock
84.194.2.x/24/196848natblock
84.194.50.x/24/186848natblock
84.194.82.x/24/176848natblock
84.194.146.x/24/166848natblock
84.195.18.x/24/156848natblock
84.192.18.x/24/146848natblock
84.198.18.x/24/136848natblock
84.202.18.x/24/122119natblock
84.210.18.x/24/1141164natblock
84.226.18.x/24/106730natblock
84.130.18.x/24/93320natblock
84.66.18.x/24/85378natblock

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.

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
2a02:1810:9cxx::/40/1206848yes
2a02:1810:9cxx::/40/1126848yes
2a02:1810:9cxx::/40/1046848yes
2a02:1810:9cxx::/40/966848yes
2a02:1810:9cxx::/40/886848yes
2a02:1810:9cxx::/40/806848yes
2a02:1810:9cxx::/40/726848yes
2a02:1810:9cxx::/40/646848no
2a02:1810:9cxx::/40/566848no
2a02:1810:9cxx::/40/486848no
2a02:1810:9cxx::/40/406848no
2a02:1810:1cxx::/40/326848no
2a02:1890:9cxx::/40/246848rewritten
2a02:9810:9cxx::/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)
rewrittenThe source address of the probe packets we received differs from the spoofed address. It appears that an intermediate device is rewriting your packet headers.
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