Logo

Session Report

Summary:
Test run at: 2020-01-24 20:26:20 GMT
Client Prefix (v4): 37.49.226.x/24
Client AS (v4): 208666
IPv4 Probes: 75
Client Prefix (v6): 2a0d:a740:xx::/40
Client AS (v6): 209299
IPv6 Probes: 72
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA blockedreceived
Routable blockedreceived
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 Adjacent Netblock Testing:

Your host (37.49.226.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
37.49.226.x/24/31208666no
37.49.226.x/24/30208666no
37.49.226.x/24/29208666no
37.49.226.x/24/28208666no
37.49.226.x/24/27208666no
37.49.226.x/24/26208666no
37.49.226.x/24/25208666no
37.49.226.x/24/24208666no
37.49.227.x/24/23208666no
37.49.224.x/24/22208666no
37.49.230.x/24/21208666no
37.49.234.x/24/2057734no
37.49.242.x/24/1950572no
37.49.194.x/24/1821127no
37.49.162.x/24/1712688no
37.49.98.x/24/166830no
37.48.226.x/24/15206347no
37.51.226.x/24/143320no
37.53.226.x/24/136849no
37.57.226.x/24/1213188no
37.33.226.x/24/1116086no
37.17.226.x/24/1044066no
37.113.226.x/24/951035no
37.177.226.x/24/830722no

Meaning of status in Received column:

noPackets spoofed from adjacent netblock were not received, probably due to blocking

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 probes:
Spoofed source addressDestinationReceived
2001:48d0:101:501::1592001:40b0:7500:280::5458:517ayes
2001:4978:1fb:6400::d22001:40b0:7500:280::5458:517ayes
2001:49aa:111:aa00::112001:40b0:7500:280::5458:517ayes
fd11:1111:1111::11112001:40b0:7500:280::5458:517ayes
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::1592001:770:18:7:225:90ff:fe0c:acb4yes
2001:4978:1fb:6400::d22001:770:18:7:225:90ff:fe0c:acb4yes
2001:49aa:111:aa00::112001:770:18:7:225:90ff:fe0c:acb4yes
fd11:1111:1111::11112001:770:18:7:225:90ff:fe0c:acb4yes
2001:48d0:101:501::1592001:df0:4:800:21c:c0ff:feb2:ad5fyes
2001:4978:1fb:6400::d22001:df0:4:800:21c:c0ff:feb2:ad5fyes
2001:49aa:111:aa00::112001:df0:4:800:21c:c0ff:feb2:ad5fyes
fd11:1111:1111::11112001:df0:4:800:21c:c0ff:feb2:ad5fyes
2001:48d0:101:501::1592607:f278:2:13:ba27:ebff:fe3f:b21eyes
2001:4978:1fb:6400::d22607:f278:2:13:ba27:ebff:fe3f:b21eyes
2001:49aa:111:aa00::112607:f278:2:13:ba27:ebff:fe3f:b21eyes
fd11:1111:1111::11112607:f278:2:13:ba27:ebff:fe3f:b21eyes
IPv6 Adjacent Netblock Testing:
Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
2a0d:a740:xx::/40/120209299yes
2a0d:a740:xx::/40/112209299yes
2a0d:a740:xx::/40/104209299yes
2a0d:a740:xx::/40/96209299yes
2a0d:a740:xx::/40/88209299yes
2a0d:a740:xx::/40/80209299yes
2a0d:a740:xx::/40/72209299yes
2a0d:a740:xx::/40/64209299yes
2a0d:a740:xx::/40/56209299yes
2a0d:a740:xx::/40/48209299yes
2a0d:a740:xx::/40/40UNROUTEDyes
2a0d:a740:80xx::/40/32UNROUTEDyes
2a0d:a7c0:xx::/40/24UNROUTEDyes
2a0d:2740:xx::/40/16UNROUTEDyes

Meaning of status in Received column:

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