Add translation for masquerade to nftables. Examples:
$ sudo ip6tables-translate -t nat -A POSTROUTING -j MASQUERADE nft add rule ip6 nat POSTROUTING counter masquerade $ sudo ip6tables-translate -t nat -A POSTROUTING -p tcp -j MASQUERADE --to-ports 10 nft add rule ip6 nat POSTROUTING ip6 nexthdr tcp counter masquerade to :10 $ sudo ip6tables-translate -t nat -A POSTROUTING -p tcp -j MASQUERADE --to-ports 10-20 --random nft add rule ip6 nat POSTROUTING ip6 nexthdr tcp counter masquerade to :10-20 random Signed-off-by: Shivani Bhardwaj <[email protected]> --- Changes in v2: Add code for masquerading port range selection extensions/libip6t_MASQUERADE.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/extensions/libip6t_MASQUERADE.c b/extensions/libip6t_MASQUERADE.c index eb9213e..5a309ac 100644 --- a/extensions/libip6t_MASQUERADE.c +++ b/extensions/libip6t_MASQUERADE.c @@ -131,6 +131,27 @@ MASQUERADE_save(const void *ip, const struct xt_entry_target *target) printf(" --random"); } +static int +MASQUERADE_xlate(const struct xt_entry_target *target, + struct xt_xlate *xl, int numeric) +{ + const struct nf_nat_range *r = (const void *)target->data; + + xt_xlate_add(xl, "masquerade"); + + if (r->flags & NF_NAT_RANGE_PROTO_SPECIFIED) { + xt_xlate_add(xl, " to :%hu", ntohs(r->min_proto.tcp.port)); + if (r->max_proto.tcp.port != r->min_proto.tcp.port) + xt_xlate_add(xl, "-%hu", ntohs(r->max_proto.tcp.port)); + } + + xt_xlate_add(xl, " "); + if (r->flags & NF_NAT_RANGE_PROTO_RANDOM) + xt_xlate_add(xl, "random "); + + return 1; +} + static struct xtables_target masquerade_tg_reg = { .name = "MASQUERADE", .version = XTABLES_VERSION, @@ -142,6 +163,7 @@ static struct xtables_target masquerade_tg_reg = { .print = MASQUERADE_print, .save = MASQUERADE_save, .x6_options = MASQUERADE_opts, + .xlate = MASQUERADE_xlate, }; void _init(void) -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe netfilter-devel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
