Session Report

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| Data: Stats Summary Recent Tests Remediation Results by AS Results by Country Results by Provider |

Summary:

Test run at: 2024-02-24 10:54:47 GMT
Client Prefix (v4): 170.233.236.x/24
Client AS (v4): 265098
IPv4 Probes: 66
Client Prefix (v6): 2804:32cc:18xx::/40
Client AS (v6): 265098
IPv6 Probes: 56

Outbound spoofing summary (from the client to our server)

Source address type IPv4 IPv6

Private - RFC1918 or ULA blocked received

Routable ✔ blocked received

Largest spoofable neighbor prefix length none /16

Spoof status key
received Spoofed packet was received. ✔ Pattern of tests from this IP block indicates a switch from allowing spoofing to blocking it.
rewritten Spoofed packet was received, but the source address was changed en route.
blocked Spoofed packet was not received, but unspoofed packet was.
unknown Neither spoofed nor unspoofed packet was received.

Outbound spoofing summary (from the client to our server)
Source address type	IPv4	IPv6
Private - RFC1918 or ULA	blocked	received
Routable	✔	blocked	received
Largest spoofable neighbor prefix length	none	/16

Spoof status key
received	Spoofed packet was received.	✔	Pattern of tests from this IP block indicates a switch from allowing spoofing to blocking it.
rewritten	Spoofed packet was received, but the source address was changed en route.
blocked	Spoofed packet was not received, but unspoofed packet was.
unknown	Neither 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 (170.233.236.x/24) can spoof 0 neighboring addresses

Spoofed source address (anon) Prefix
Length ASN of spoofed
source address Received

170.233.236.x/24 /31 265098 natblock

170.233.236.x/24 /30 265098 natblock

170.233.236.x/24 /29 265098 natblock

170.233.236.x/24 /28 265098 natblock

170.233.236.x/24 /27 265098 natblock

170.233.236.x/24 /26 265098 natblock

170.233.236.x/24 /25 265098 natblock

170.233.236.x/24 /24 265098 natblock

170.233.237.x/24 /23 265098 natblock

170.233.238.x/24 /22 265098 natblock

170.233.232.x/24 /21 264741 natblock

170.233.228.x/24 /20 265198 natblock

170.233.252.x/24 /19 265097 natblock

170.233.204.x/24 /18 263321 natblock

170.233.172.x/24 /17 264281 natblock

170.233.108.x/24 /16 265090 natblock

170.232.236.x/24 /15 21833 natblock

170.235.236.x/24 /14 11534 natblock

170.237.236.x/24 /13 UNROUTED natblock

170.225.236.x/24 /12 UNROUTED natblock

170.249.236.x/24 /11 63410 natblock

170.201.236.x/24 /10 10995 natblock

170.169.236.x/24 /9 2134 natblock

170.105.236.x/24 /8 UNROUTED natblock

Meaning of status in Received column:

natblock Spoofed probe packets appear to be blocked by your local NAT or firewall rather than being rewritten with a public source address.

Spoofed source address (anon)	Prefix Length	ASN of spoofed source address	Received
170.233.236.x/24	/31	265098	natblock
170.233.236.x/24	/30	265098	natblock
170.233.236.x/24	/29	265098	natblock
170.233.236.x/24	/28	265098	natblock
170.233.236.x/24	/27	265098	natblock
170.233.236.x/24	/26	265098	natblock
170.233.236.x/24	/25	265098	natblock
170.233.236.x/24	/24	265098	natblock
170.233.237.x/24	/23	265098	natblock
170.233.238.x/24	/22	265098	natblock
170.233.232.x/24	/21	264741	natblock
170.233.228.x/24	/20	265198	natblock
170.233.252.x/24	/19	265097	natblock
170.233.204.x/24	/18	263321	natblock
170.233.172.x/24	/17	264281	natblock
170.233.108.x/24	/16	265090	natblock
170.232.236.x/24	/15	21833	natblock
170.235.236.x/24	/14	11534	natblock
170.237.236.x/24	/13	UNROUTED	natblock
170.225.236.x/24	/12	UNROUTED	natblock
170.249.236.x/24	/11	63410	natblock
170.201.236.x/24	/10	10995	natblock
170.169.236.x/24	/9	2134	natblock
170.105.236.x/24	/8	UNROUTED	natblock

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 address Destination Received
2001:48d0:101:501::159 2001:48d0:101:501::242 yes
2001:4978:1fb:6400::d2 2001:48d0:101:501::242 yes
2001:49aa:111:aa00::11 2001:48d0:101:501::242 yes
fd11:1111:1111::1111 2001:48d0:101:501::242 no
2001:48d0:101:501::159 2001:48d0:101:501::247 yes
2001:4978:1fb:6400::d2 2001:48d0:101:501::247 yes
2001:49aa:111:aa00::11 2001:48d0:101:501::247 yes
fd11:1111:1111::1111 2001:48d0:101:501::247 no
2001:48d0:101:501::159 2001:610:510:115:192:42:115:98 yes
2001:4978:1fb:6400::d2 2001:610:510:115:192:42:115:98 no
2001:49aa:111:aa00::11 2001:610:510:115:192:42:115:98 no
fd11:1111:1111::1111 2001:610:510:115:192:42:115:98 no
2001:48d0:101:501::159 2001:630:212:225:225:90ff:fe0c:45a6 yes
2001:4978:1fb:6400::d2 2001:630:212:225:225:90ff:fe0c:45a6 no
2001:49aa:111:aa00::11 2001:630:212:225:225:90ff:fe0c:45a6 no
fd11:1111:1111::1111 2001:630:212:225:225:90ff:fe0c:45a6 no
2001:48d0:101:501::159 2001:638:902:2000:ba27:ebff:fe86:2c51 yes
2001:4978:1fb:6400::d2 2001:638:902:2000:ba27:ebff:fe86:2c51 no
2001:49aa:111:aa00::11 2001:638:902:2000:ba27:ebff:fe86:2c51 no
fd11:1111:1111::1111 2001:638:902:2000:ba27:ebff:fe86:2c51 no
2001:48d0:101:501::159 2001:770:1c:7:225:90ff:fe0c:acb4 yes
2001:4978:1fb:6400::d2 2001:770:1c:7:225:90ff:fe0c:acb4 yes
2001:49aa:111:aa00::11 2001:770:1c:7:225:90ff:fe0c:acb4 yes
fd11:1111:1111::1111 2001:770:1c:7:225:90ff:fe0c:acb4 yes
2001:48d0:101:501::159 2607:8400:2880:4::80df:9d0d yes
2001:4978:1fb:6400::d2 2607:8400:2880:4::80df:9d0d yes
2001:49aa:111:aa00::11 2607:8400:2880:4::80df:9d0d yes
fd11:1111:1111::1111 2607:8400:2880:4::80df:9d0d no
2001:48d0:101:501::159 2607:f278:2:13:da3a:ddff:fe30:ce14 yes
2001:4978:1fb:6400::d2 2607:f278:2:13:da3a:ddff:fe30:ce14 yes
2001:49aa:111:aa00::11 2607:f278:2:13:da3a:ddff:fe30:ce14 yes
fd11:1111:1111::1111 2607:f278:2:13:da3a:ddff:fe30:ce14 no

Spoofed source address	Destination	Received
2001:48d0:101:501::159	2001:48d0:101:501::242	yes
2001:4978:1fb:6400::d2	2001:48d0:101:501::242	yes
2001:49aa:111:aa00::11	2001:48d0:101:501::242	yes
fd11:1111:1111::1111	2001:48d0:101:501::242	no
2001:48d0:101:501::159	2001:48d0:101:501::247	yes
2001:4978:1fb:6400::d2	2001:48d0:101:501::247	yes
2001:49aa:111:aa00::11	2001:48d0:101:501::247	yes
fd11:1111:1111::1111	2001:48d0:101:501::247	no
2001:48d0:101:501::159	2001:610:510:115:192:42:115:98	yes
2001:4978:1fb:6400::d2	2001:610:510:115:192:42:115:98	no
2001:49aa:111:aa00::11	2001:610:510:115:192:42:115:98	no
fd11:1111:1111::1111	2001:610:510:115:192:42:115:98	no
2001:48d0:101:501::159	2001:630:212:225:225:90ff:fe0c:45a6	yes
2001:4978:1fb:6400::d2	2001:630:212:225:225:90ff:fe0c:45a6	no
2001:49aa:111:aa00::11	2001:630:212:225:225:90ff:fe0c:45a6	no
fd11:1111:1111::1111	2001:630:212:225:225:90ff:fe0c:45a6	no
2001:48d0:101:501::159	2001:638:902:2000:ba27:ebff:fe86:2c51	yes
2001:4978:1fb:6400::d2	2001:638:902:2000:ba27:ebff:fe86:2c51	no
2001:49aa:111:aa00::11	2001:638:902:2000:ba27:ebff:fe86:2c51	no
fd11:1111:1111::1111	2001:638:902:2000:ba27:ebff:fe86:2c51	no
2001:48d0:101:501::159	2001:770:1c:7:225:90ff:fe0c:acb4	yes
2001:4978:1fb:6400::d2	2001:770:1c:7:225:90ff:fe0c:acb4	yes
2001:49aa:111:aa00::11	2001:770:1c:7:225:90ff:fe0c:acb4	yes
fd11:1111:1111::1111	2001:770:1c:7:225:90ff:fe0c:acb4	yes
2001:48d0:101:501::159	2607:8400:2880:4::80df:9d0d	yes
2001:4978:1fb:6400::d2	2607:8400:2880:4::80df:9d0d	yes
2001:49aa:111:aa00::11	2607:8400:2880:4::80df:9d0d	yes
fd11:1111:1111::1111	2607:8400:2880:4::80df:9d0d	no
2001:48d0:101:501::159	2607:f278:2:13:da3a:ddff:fe30:ce14	yes
2001:4978:1fb:6400::d2	2607:f278:2:13:da3a:ddff:fe30:ce14	yes
2001:49aa:111:aa00::11	2607:f278:2:13:da3a:ddff:fe30:ce14	yes
fd11:1111:1111::1111	2607:f278:2:13:da3a:ddff:fe30:ce14	no

IPv6 Adjacent Netblock Testing:

Spoofed source address (anon) Prefix
Length ASN of spoofed
source address Received

2804:32cc:18xx::/40 /120 265098 yes

2804:32cc:18xx::/40 /112 265098 yes

2804:32cc:18xx::/40 /104 265098 yes

2804:32cc:18xx::/40 /96 265098 yes

2804:32cc:18xx::/40 /88 265098 yes

2804:32cc:18xx::/40 /80 265098 yes

2804:32cc:18xx::/40 /72 265098 yes

2804:32cc:18xx::/40 /64 265098 yes

2804:32cc:18xx::/40 /56 265098 yes

2804:32cc:18xx::/40 /48 265098 yes

2804:32cc:18xx::/40 /40 265098 yes

2804:32cc:98xx::/40 /32 265098 yes

2804:324c:18xx::/40 /24 UNROUTED yes

2804:b2cc:18xx::/40 /16 UNROUTED yes

Meaning of status in Received column:

yes Packets spoofed from adjacent netblock were received (but that netblock is within the source AS)

Spoofed source address (anon)	Prefix Length	ASN of spoofed source address	Received
2804:32cc:18xx::/40	/120	265098	yes
2804:32cc:18xx::/40	/112	265098	yes
2804:32cc:18xx::/40	/104	265098	yes
2804:32cc:18xx::/40	/96	265098	yes
2804:32cc:18xx::/40	/88	265098	yes
2804:32cc:18xx::/40	/80	265098	yes
2804:32cc:18xx::/40	/72	265098	yes
2804:32cc:18xx::/40	/64	265098	yes
2804:32cc:18xx::/40	/56	265098	yes
2804:32cc:18xx::/40	/48	265098	yes
2804:32cc:18xx::/40	/40	265098	yes
2804:32cc:98xx::/40	/32	265098	yes
2804:324c:18xx::/40	/24	UNROUTED	yes
2804:b2cc:18xx::/40	/16	UNROUTED	yes

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.