| lh | 9ed821d | 2023-04-07 01:36:19 -0700 | [diff] [blame] | 1 | This module matches on the bridge port input and output devices enslaved |
| 2 | to a bridge device. This module is a part of the infrastructure that enables |
| 3 | a transparent bridging IP firewall and is only useful for kernel versions |
| 4 | above version 2.5.44. |
| 5 | .TP |
| 6 | [\fB!\fP] \fB\-\-physdev\-in\fP \fIname\fP |
| 7 | Name of a bridge port via which a packet is received (only for |
| 8 | packets entering the |
| 9 | .BR INPUT , |
| 10 | .B FORWARD |
| 11 | and |
| 12 | .B PREROUTING |
| 13 | chains). If the interface name ends in a "+", then any |
| 14 | interface which begins with this name will match. If the packet didn't arrive |
| 15 | through a bridge device, this packet won't match this option, unless '!' is used. |
| 16 | .TP |
| 17 | [\fB!\fP] \fB\-\-physdev\-out\fP \fIname\fP |
| 18 | Name of a bridge port via which a packet is going to be sent (for packets |
| 19 | entering the |
| 20 | .BR FORWARD , |
| 21 | .B OUTPUT |
| 22 | and |
| 23 | .B POSTROUTING |
| 24 | chains). If the interface name ends in a "+", then any |
| 25 | interface which begins with this name will match. Note that in the |
| 26 | .BR nat " and " mangle |
| 27 | .B OUTPUT |
| 28 | chains one cannot match on the bridge output port, however one can in the |
| 29 | .B "filter OUTPUT" |
| 30 | chain. If the packet won't leave by a bridge device or if it is yet unknown what |
| 31 | the output device will be, then the packet won't match this option, |
| 32 | unless '!' is used. |
| 33 | .TP |
| 34 | [\fB!\fP] \fB\-\-physdev\-is\-in\fP |
| 35 | Matches if the packet has entered through a bridge interface. |
| 36 | .TP |
| 37 | [\fB!\fP] \fB\-\-physdev\-is\-out\fP |
| 38 | Matches if the packet will leave through a bridge interface. |
| 39 | .TP |
| 40 | [\fB!\fP] \fB\-\-physdev\-is\-bridged\fP |
| 41 | Matches if the packet is being bridged and therefore is not being routed. |
| 42 | This is only useful in the FORWARD and POSTROUTING chains. |