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Diffstat (limited to 'extensions/libxt_HMARK.man')
| -rw-r--r-- | extensions/libxt_HMARK.man | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/extensions/libxt_HMARK.man b/extensions/libxt_HMARK.man new file mode 100644 index 00000000..2b004b5a --- /dev/null +++ b/extensions/libxt_HMARK.man @@ -0,0 +1,60 @@ +Like MARK, i.e. set the fwmark, but the mark is calculated from hashing +packet selector at choice. You have also to specify the mark range and, +optionally, the offset to start from. ICMP error messages are inspected +and used to calculate the hashing. +.PP +Existing options are: +.TP +\fB\-\-hmark\-tuple\fP tuple\fI\fP +Possible tuple members are: +.B src +meaning source address (IPv4, IPv6 address), +.B dst +meaning destination address (IPv4, IPv6 address), +.B sport +meaning source port (TCP, UDP, UDPlite, SCTP, DCCP), +.B dport +meaning destination port (TCP, UDP, UDPlite, SCTP, DCCP), +.B spi +meaning Security Parameter Index (AH, ESP), and +.B ct +meaning the usage of the conntrack tuple instead of the packet selectors. +.TP +\fB\-\-hmark\-mod\fP \fIvalue (must be > 0)\fP +Modulus for hash calculation (to limit the range of possible marks) +.TP +\fB\-\-hmark\-offset\fP \fIvalue\fP +Offset to start marks from. +.TP +For advanced usage, instead of using \-\-hmark\-tuple, you can specify custom +prefixes and masks: +.TP +\fB\-\-hmark\-src\-prefix\fP \fIcidr\fP +The source address mask in CIDR notation. +.TP +\fB\-\-hmark\-dst\-prefix\fP \fIcidr\fP +The destination address mask in CIDR notation. +.TP +\fB\-\-hmark\-sport\-mask\fP \fIvalue\fP +A 16 bit source port mask in hexadecimal. +.TP +\fB\-\-hmark\-dport\-mask\fP \fIvalue\fP +A 16 bit destination port mask in hexadecimal. +.TP +\fB\-\-hmark\-spi\-mask\fP \fIvalue\fP +A 32 bit field with spi mask. +.TP +\fB\-\-hmark\-proto\-mask\fP \fIvalue\fP +An 8 bit field with layer 4 protocol number. +.TP +\fB\-\-hmark\-rnd\fP \fIvalue\fP +A 32 bit random custom value to feed hash calculation. +.PP +\fIExamples:\fP +.PP +iptables \-t mangle \-A PREROUTING \-m state \-\-state NEW + \-j HMARK \-\-hmark-tuple ct \-\-hmark-offset 10000 \-\-hmark\-mod 10 +\-\-hmark\-rnd 0xfeedcafe +.PP +iptables \-t mangle \-A PREROUTING -j HMARK \-\-hmark\-offset 10000 +\-\-hmark-tuple src,dst,proto \-\-hmark-mod 10 \-\-hmark\-rnd 0xdeafbeef |