Session Report
Summary:
Test run at: 2016-05-17 17:45:24 GMT
Client Prefix (v4): 195.149.218.x/24
Client AS (v4): 34347 (CITYNET-AT-AS)
IPv4 Probes: 86
Client Prefix (v6): 2001:0:9dxx::/40
Client AS (v6): 6939 (HURRICANE)
Outbound spoofing summary (from the client to our server) |
Source address type |
IPv4 |
Private -
RFC1918 |
blocked |
Routable |
blocked |
Largest spoofable neighbor prefix length |
/21 |
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 Adjacent Netblock Testing:
Your host (195.149.218.x/24) can spoof 2047 neighboring addresses (within your /21 prefix)
Spoofed source address (anon) | Prefix Length | ASN of spoofed source address | Received |
195.149.218.x/24 | /31 | 34347 | yes |
195.149.218.x/24 | /30 | 34347 | yes |
195.149.218.x/24 | /29 | 34347 | yes |
195.149.218.x/24 | /28 | 34347 | yes |
195.149.218.x/24 | /27 | 34347 | yes |
195.149.218.x/24 | /26 | 34347 | yes |
195.149.218.x/24 | /25 | 34347 | yes |
195.149.218.x/24 | /24 | 34347 | yes |
195.149.219.x/24 | /23 | 34347 | yes |
195.149.216.x/24 | /22 | 34347 | yes |
195.149.222.x/24 | /21 | 34347 | yes |
195.149.210.x/24 | /20 | 2134 | natblock |
195.149.202.x/24 | /19 | 29407 | natblock |
195.149.250.x/24 | /18 | 8717 | natblock |
195.149.154.x/24 | /17 | 8928 | natblock |
195.149.90.x/24 | /16 | UNROUTED | natblock |
195.148.218.x/24 | /15 | 1741 | natblock |
195.151.218.x/24 | /14 | 2854 | natblock |
195.145.218.x/24 | /13 | 3320 | natblock |
195.157.218.x/24 | /12 | 8426 | natblock |
195.133.218.x/24 | /11 | 29226 | natblock |
195.181.218.x/24 | /10 | 3292 | natblock |
195.213.218.x/24 | /9 | UNROUTED | natblock |
195.21.218.x/24 | /8 | 8928 | natblock |
Meaning of status in Received column:
yes | Packets spoofed from adjacent netblock were received (but that netblock is within the source AS) |
natblock | Spoofed 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
able to spoof routable, non-adjacent source addresses through the
first 2 IP hop(s).
Summary:
The results from all tests are aggregated to produce a summary
"State of IP Spoofing" report.
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