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* netfilter: nft_masq: support port rangePablo Neira Ayuso2016-03-021-1/+3
| | | | | | Complete masquerading support by allowing port range selection. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* netfilter: nf_tables: restrict nat/masq expressions to nat chain typePablo Neira Ayuso2014-10-131-0/+3
| | | | | | | | | | | | | | | | | | This adds the missing validation code to avoid the use of nat/masq from non-nat chains. The validation assumes two possible configuration scenarios: 1) Use of nat from base chain that is not of nat type. Reject this configuration from the nft_*_init() path of the expression. 2) Use of nat from non-base chain. In this case, we have to wait until the non-base chain is referenced by at least one base chain via jump/goto. This is resolved from the nft_*_validate() path which is called from nf_tables_check_loops(). The user gets an -EOPNOTSUPP in both cases. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* netfilter: nf_tables: add new nft_masq expressionArturo Borrero2014-09-091-0/+16
The nft_masq expression is intended to perform NAT in the masquerade flavour. We decided to have the masquerade functionality in a separated expression other than nft_nat. Signed-off-by: Arturo Borrero Gonzalez <arturo.borrero.glez@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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