Книга: Iptables Tutorial 1.2.2
Packet type match
Packet type match
The packet type match is used to match packets based on their type. I.e., are they destined to a specific person, to everyone or to a specific group of machines or users. These three groups are generally called unicast, broadcast and multicast, as discussed in the TCP/IP repetition chapter. The match is loaded by using -m pkttype.
Table 10-25. Packet type match options
| Match | --pkt-type |
| Kernel | 2.3, 2.4, 2.5 and 2.6 |
| Example | iptables -A OUTPUT -m pkttype --pkt-type unicast |
| Explanation | The --pkt-type match is used to tell the packet type match which packet type to match. It can either take unicast , broadcast or multicast as an argument, as in the example. It can also be inverted by using a ! like this: -m pkttype --pkt-type ! broadcast, which will match all other packet types. |
Оглавление книги
Оглавление статьи/книги
- Addrtype match
- AH/ESP match
- Comment match
- Connmark match
- Conntrack match
- Dscp match
- Ecn match
- Hashlimit match
- Helper match
- IP range match
- Length match
- Limit match
- Mac match
- Mark match
- Multiport match
- Owner match
- Packet type match
- Realm match
- Recent match
- State match
- Tcpmss match
- Tos match
- Ttl match
- Unclean match