Logo

Session Report

Summary:
Test run at: 2023-12-27 07:53:58 GMT
Client Prefix (v4): 202.65.113.x/24
Client AS (v4): 23951 (CITRA-AS-ID)
IPv4 Probes: 69
Client Prefix (v6): 2401:ee00:10xx::/40
Client AS (v6): 23951 (CITRA-AS-ID)
IPv6 Probes: 60
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA unknownreceived
Routable unknownreceived
Largest spoofable neighbor prefix length none/16
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 (202.65.113.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
202.65.113.x/24/3123951natblock
202.65.113.x/24/3023951natblock
202.65.113.x/24/2923951natblock
202.65.113.x/24/2823951natblock
202.65.113.x/24/2723951natblock
202.65.113.x/24/2623951natblock
202.65.113.x/24/2523951natblock
202.65.113.x/24/2423951natblock
202.65.112.x/24/2323951natblock
202.65.115.x/24/2223951natblock
202.65.117.x/24/2123951natblock
202.65.121.x/24/2023951natblock
202.65.97.x/24/19UNROUTEDnatblock
202.65.81.x/24/1838195natblock
202.65.49.x/24/1710131natblock
202.65.241.x/24/164773natblock
202.64.113.x/24/159381natblock
202.67.113.x/24/149443natblock
202.69.113.x/24/1323798natblock
202.73.113.x/24/12UNROUTEDnatblock
202.81.113.x/24/1158521natblock
202.97.113.x/24/104134natblock
202.1.113.x/24/910100natblock
202.193.113.x/24/824357natblock

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::242yes
2001:4978:1fb:6400::d22001:48d0:101:501::242yes
2001:49aa:111:aa00::112001:48d0:101:501::242yes
fd11:1111:1111::11112001:48d0:101:501::242yes
2001:48d0:101:501::1592001:48d0:101:501::247yes
2001:4978:1fb:6400::d22001:48d0:101:501::247yes
2001:49aa:111:aa00::112001:48d0:101:501::247yes
fd11:1111:1111::11112001:48d0:101:501::247yes
2001:48d0:101:501::1592001:610:510:115:192:42:115:98yes
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:45a6yes
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:acb4yes
2001:4978:1fb:6400::d22001:770:1c:7:225:90ff:fe0c:acb4yes
2001:49aa:111:aa00::112001:770:1c:7:225:90ff:fe0c:acb4yes
fd11:1111:1111::11112001:770:1c:7:225:90ff:fe0c:acb4yes
IPv6 Adjacent Netblock Testing:
Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
2401:ee00:10xx::/40/12023951yes
2401:ee00:10xx::/40/11223951yes
2401:ee00:10xx::/40/10423951yes
2401:ee00:10xx::/40/9623951yes
2401:ee00:10xx::/40/8823951yes
2401:ee00:10xx::/40/8023951yes
2401:ee00:10xx::/40/7223951yes
2401:ee00:10xx::/40/6423951yes
2401:ee00:10xx::/40/5623951yes
2401:ee00:10xx::/40/4823951yes
2401:ee00:10xx::/40/4023951yes
2401:ee00:90xx::/40/3223951yes
2401:ee80:10xx::/40/24UNROUTEDno
2401:6e00:10xx::/40/16UNROUTEDyes

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