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ntuple for blocking by ttl

OYILM1
Beginner
1,073 Views

Hello,

Is it possible to use ntuple for blocking packets by ttl value in the ethernet?

I am curious about User-defined field shown in Filters.

Regards,

Filter: 2045

Rule Type: TCP over IPv4

Src IP addr: 0.0.0.0 mask: 255.255.255.255

Dest IP addr: 213.232.170.33 mask: 0.0.0.0

TOS: 0x0 mask: 0xff

Src port: 0 mask: 0xffff

Dest port: 81 mask: 0x0

VLAN EtherType: 0x0 mask: 0xffff

VLAN: 0x0 mask: 0xffff

User-defined: 0x0 mask: 0xffffffffffffffff

Action: Drop

ethtool -N|-U|--config-nfc|--config-ntuple DEVNAME Configure Rx network flow classification options or rulesrx-flow-hash tcp4|udp4|ah4|esp4|sctp4|tcp6|udp6|ah6|esp6|sctp6 m|v|t|s|d|f|n|r... |flow-type ether|ip4|tcp4|udp4|sctp4|ah4|esp4[ src %x:%x:%x:%x:%x:%x [m %x:%x:%x:%x:%x:%x] ][ dst %x:%x:%x:%x:%x:%x [m %x:%x:%x:%x:%x:%x] ][ proto %d [m %x] ][ src-ip %d.%d.%d.%d [m %d.%d.%d.%d] ][ dst-ip %d.%d.%d.%d [m %d.%d.%d.%d] ][ tos %d [m %x] ][ l4proto %d [m %x] ][ src-port %d [m %x] ][ dst-port %d [m %x] ][ spi %d [m %x] ][ vlan-etype %x [m %x] ][ vlan %x [m %x] ][ user-def %x [m %x] ][ dst-mac %x:%x:%x:%x:%x:%x [m %x:%x:%x:%x:%x:%x] ][ action %d ][ loc %d]] |delete %d
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1 Reply
st4
New Contributor III
229 Views

Hi labrisnetworks,

Can you help provide what is the network adapter model used here? What is the exact Linux version?

rgds,

wb

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