Session Report
Summary:
Test run at: 2017-08-15 20:02:59 GMT
Client Prefix (v4): 177.36.237.x/24
Client AS (v4): 53070
IPv4 Probes: 131
Outbound spoofing summary (from the client to our server) |
Source address type |
IPv4 |
Private -
RFC1918 |
blocked |
Routable |
✔ | blocked |
Largest spoofable neighbor prefix length |
/24 |
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 (177.36.237.x/24) can spoof 255 neighboring addresses (within your /24 prefix)
Spoofed source address (anon) | Prefix Length | ASN of spoofed source address | Received |
177.36.237.x/24 | /31 | 53070 | yes |
177.36.237.x/24 | /30 | 53070 | yes |
177.36.237.x/24 | /29 | 53070 | yes |
177.36.237.x/24 | /28 | 53070 | yes |
177.36.237.x/24 | /27 | 53070 | yes |
177.36.237.x/24 | /26 | 53070 | yes |
177.36.237.x/24 | /25 | 53070 | yes |
177.36.237.x/24 | /24 | 53070 | yes |
177.36.236.x/24 | /23 | 53070 | natblock |
177.36.239.x/24 | /22 | 53070 | natblock |
177.36.233.x/24 | /21 | 53070 | natblock |
177.36.229.x/24 | /20 | 53070 | natblock |
177.36.253.x/24 | /19 | 262404 | natblock |
177.36.205.x/24 | /18 | 52967 | natblock |
177.36.173.x/24 | /17 | 53122 | natblock |
177.36.109.x/24 | /16 | 52972 | natblock |
177.37.237.x/24 | /15 | 28126 | natblock |
177.38.237.x/24 | /14 | 52760 | natblock |
177.32.237.x/24 | /13 | 28573 | natblock |
177.44.237.x/24 | /12 | 52982 | natblock |
177.52.237.x/24 | /11 | 52839 | natblock |
177.4.237.x/24 | /10 | 8167 | natblock |
177.100.237.x/24 | /9 | 28573 | natblock |
177.164.237.x/24 | /8 | 26615 | 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
unable to spoof routable, non-adjacent source addresses through
even the first IP hop.
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.