Linked NAT rules are SNAT rules and are created from firewall rules. Changing or deleting the original NAT rule doesn't affect them. These rules remain independent of the original rule from which they've been created. You can specify loopback and reflexive rules for a destination NAT rule. You can create NAT rules for IPv4 and IPv6 networks. You can create source NAT (SNAT) and destination NAT (DNAT) rules to enable traffic flow between private and public networks by translating non-routable, private IP addresses to routable, public IP addresses. It translates private IP addresses into public IP addresses, allowing private IP networks to connect to the internet and hiding the internal network behind the public IP address. Network Address Translation (NAT) allows you to translate IP addresses and ports for traffic flowing between networks. Your browser doesn’t support copying the link to the clipboard. It will remain unchanged in future help versions. if ((event != NFT_MSG_DELRULE) & (rule->list.Always use the following when referencing this page. Nlh = nlmsg_put(skb, portid, seq, type, sizeof(struct nfgenmsg), -2296,8 +2296,7 static int nf_tables_fill_rule_info(struct sk_buff *skb, struct net *net, U16 type = nfnl_msg_type(NFNL_SUBSYS_NFTABLES, event) +++ -2270,13 +2270,13 static int nf_tables_fill_rule_info(struct sk_buff *skb, struct net *net, Net/netfilter/nf_tables_api.c | 20 +++++++++++-ġ file changed, 11 insertions(+), 9 deletions(-)ĭiff -git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c Pass previous rule as argument, obtained by keeping a pointer toįixes: d9adf22a291883 ("netfilter: nf_tables: use call_rcu in netlink dumps") When deletions are not prevented somehow: list_del_rcu poisonsīefore rcu-conversion this was safe as dump operations did hold Its not possible to fetch previous element in rcu-protected lists We can oops in nf_tables_fill_rule_info(). ` (10 subsequent siblings) 11 siblings, 0 replies 13+ messages in thread 21:35 ` netfilter: nf_queue: fix reinject verdict handling Pablo Neira Ayuso 21:35 Netfilter/IPVS fixes for net Pablo Neira 21:35 ` Pablo Neira Ayuso * netfilter: nf_tables: fix oops during rule dump Tools/testing/selftests/netfilter/nft_nat.sh | 6 +-ġ3 files changed, 375 insertions(+), 63 deletions(-)Ĭreate mode 100755 tools/testing/selftests/netfilter/nft_flowtable.sh Tools/testing/selftests/netfilter/Makefile | 2 +. Net/ipv4/netfilter/nft_fib_ipv4.c | 23 +. Netfilter: nft_fib: Fix existence check support Selftests: netfilter: missing error check when setting up veth interface Netfilter: nf_queue: fix reinject verdict handling Selftests: netfilter: add flowtable test script Netfilter: nft_flow_offload: IPCB is only valid for ipv4 family Netfilter: nft_flow_offload: don't offload when sequence numbers need adjustment Netfilter: nft_flow_offload: set liberal tracking mode for tcp Netfilter: nf_flow_table: ignore DF bit setting Netfilter: nat: fix udp checksum corruption Netfilter: nf_tables: fix oops during rule dump Selftests: netfilter: add flowtable test script ( 10:56:11 +0200) Git:///pub/scm/linux/kernel/git/pablo/nf.git IPv4 DF bit, patch for the flowtable infrastructure from Florian.Ĩ) Set liberal TCP tracking for flows that are placed in theįlowtable, in case they need to go back to classic forwarding path,ĩ) Don't add flow with sequence adjustment to flowtable, from Florian.ġ0) Skip IPv4 options from IPv6 datapath in flowtable, from Florian.ġ1) Add selftest for the flowtable infrastructure, from Florian. The following patchset contains Netfilter/IPVS fixes for your net tree:ġ) Fix crash when dumping rules after conversion to RCU,Ģ) Fix incorrect hook reinjection from nf_queue in case NF_REPEAT,ģ) Fix check for route existence in fib extension, from Phil Sutter.Ĥ) Fix use after free in ip_vs_in() hook, from YueHaibing.ĥ) Check for veth existence from netfilter selftests,Ħ) Checksum corruption in UDP NAT helpers due to typo,ħ) Pass up packets to classic forwarding path regardless of ` (11 more replies) 0 siblings, 12 replies 13+ messages in threadįrom: Pablo Neira Ayuso 21:35 UTC ( / raw) 21:35 ` netfilter: nf_tables: fix oops during rule dump Pablo Neira Ayuso Netfilter/IPVS fixes for net Netdev Archive on help / color / mirror / Atom feed * Netfilter/IPVS fixes for net 21:35 Pablo Neira Ayuso
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