diff options
| author | Shivani Bhardwaj <shivanib134@gmail.com> | 2016-03-02 15:27:49 +0530 |
|---|---|---|
| committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2016-03-02 12:53:28 +0100 |
| commit | 18ec6c3e55dc698646a1e006180aa614f5198a08 (patch) | |
| tree | 57b04d23e3bc9315fdb1f8392062ddc5cbb80c6c /extensions | |
| parent | 4f75601d37349c5a983a969d46c1ff0604991b5c (diff) | |
extensions: libipt_MASQUERADE: Add translation to nft
Add translation for masquerade to nftables.
Examples:
$ sudo iptables-translate -t nat -A POSTROUTING -j MASQUERADE
nft add rule ip nat POSTROUTING counter masquerade
$ sudo iptables-translate -t nat -A POSTROUTING -p tcp -j MASQUERADE --to-ports 10
nft add rule ip nat POSTROUTING ip protocol tcp counter masquerade to :10
$ sudo iptables-translate -t nat -A POSTROUTING -p tcp -j MASQUERADE --to-ports 10-20 --random
nft add rule ip nat POSTROUTING ip protocol tcp counter masquerade to :10-20 random
Signed-off-by: Shivani Bhardwaj <shivanib134@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'extensions')
| -rw-r--r-- | extensions/libipt_MASQUERADE.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/extensions/libipt_MASQUERADE.c b/extensions/libipt_MASQUERADE.c index ea074454..d1393c11 100644 --- a/extensions/libipt_MASQUERADE.c +++ b/extensions/libipt_MASQUERADE.c @@ -134,6 +134,29 @@ 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_ipv4_multi_range_compat *mr = + (const void *)target->data; + const struct nf_nat_ipv4_range *r = &mr->range[0]; + + xt_xlate_add(xl, "masquerade"); + + if (r->flags & NF_NAT_RANGE_PROTO_SPECIFIED) { + xt_xlate_add(xl, " to :%hu", ntohs(r->min.tcp.port)); + if (r->max.tcp.port != r->min.tcp.port) + xt_xlate_add(xl, "-%hu", ntohs(r->max.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, @@ -146,6 +169,7 @@ static struct xtables_target masquerade_tg_reg = { .print = MASQUERADE_print, .save = MASQUERADE_save, .x6_options = MASQUERADE_opts, + .xlate = MASQUERADE_xlate, }; void _init(void) |