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linux-stable/net/netfilter
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Marcelo Leitner e37ad9fd63 netfilter: nf_conntrack: allow server to become a client in TW handling 
When a port that was used to listen for inbound connections gets closed
and reused for outgoing connections (like rsh ends up doing for stderr
flow), current we may reject the SYN/ACK packet for the new connection
because tcp_conntracks states forbirds a port to become a client while
there is still a TIME_WAIT entry in there for it.

As TCP may expire the TIME_WAIT socket in 60s and conntrack's timeout
for it is 120s, there is a ~60s window that the application can end up
opening a port that conntrack will end up blocking.

This patch fixes this by simply allowing such state transition: if we
see a SYN, in TIME_WAIT state, on REPLY direction, move it to sSS. Note
that the rest of the code already handles this situation, more
specificly in tcp_packet(), first switch clause.

Signed-off-by: Marcelo Ricardo Leitner <mleitner@redhat.com>
Acked-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2014-10-22 14:12:50 +02:00
..
ipset
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
2014-10-08 21:40:54 -04:00
ipvs
netfilter: replace strnicmp with strncasecmp
2014-10-14 02:18:24 +02:00
core.c
netfilter: HAVE_JUMP_LABEL instead of CONFIG_JUMP_LABEL
2014-08-25 10:45:28 +02:00
Kconfig
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2014-10-02 11:25:43 -07:00
Makefile
Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next
2014-09-10 12:46:32 -07:00
nf_conntrack_acct.c
netfilter: introduce nf_conn_acct structure
2013-11-03 21:48:49 +01:00
nf_conntrack_amanda.c
netfilter: add my copyright statements
2013-04-18 20:27:55 +02:00
nf_conntrack_broadcast.c
netfilter: nf_conntrack: nf_conntrack snmp helper
2011-01-18 18:12:24 +01:00
nf_conntrack_core.c
net: use reciprocal_scale() helper
2014-08-23 12:21:21 -07:00
nf_conntrack_ecache.c
netfilter: conntrack: remove timer from ecache extension
2014-06-25 19:15:38 +02:00
nf_conntrack_expect.c
net: use reciprocal_scale() helper
2014-08-23 12:21:21 -07:00
nf_conntrack_extend.c
netfilter: nf_ct_ext: support variable length extensions
2012-06-16 15:08:49 +02:00
nf_conntrack_ftp.c
netfilter: replace strnicmp with strncasecmp
2014-10-14 02:18:24 +02:00
nf_conntrack_h323_asn1.c
netfilter: h323: bug in parsing of ASN1 SEQOF field
2011-04-04 15:21:02 +02:00
nf_conntrack_h323_main.c
netfilter: conntrack: seperate expect locking from nf_conntrack_lock
2014-03-07 11:41:01 +01:00
nf_conntrack_h323_types.c
[NETFILTER]: nf_conntrack_h323: constify and annotate H.323 helper
2008-01-31 19:28:07 -08:00
nf_conntrack_helper.c
netfilter: conntrack: remove central spinlock nf_conntrack_lock
2014-03-07 11:41:13 +01:00
nf_conntrack_irc.c
netfilter: add my copyright statements
2013-04-18 20:27:55 +02:00
nf_conntrack_l3proto_generic.c
[NETFILTER]: nf_conntrack: use bool type in struct nf_conntrack_l3proto
2008-04-14 11:15:52 +02:00
nf_conntrack_labels.c
netfilter: connlabels: remove unneeded includes
2013-07-31 16:39:18 +02:00
nf_conntrack_netbios_ns.c
netfilter: nf_conntrack: nf_conntrack snmp helper
2011-01-18 18:12:24 +01:00
nf_conntrack_netlink.c
net: use ktime_get_ns() and ktime_get_real_ns() helpers
2014-08-22 19:57:23 -07:00
nf_conntrack_pptp.c
netfilter: nf_conntrack: flush net_gre->keymap_list only from gre helper
2014-04-08 10:56:12 +02:00
nf_conntrack_proto_dccp.c
netfilter: nf_conntrack_dccp: fix skb_header_pointer API usages
2014-01-06 17:40:02 +01:00
nf_conntrack_proto_generic.c
netfilter: conntrack: disable generic tracking for known protocols
2014-09-29 12:17:49 +02:00
nf_conntrack_proto_gre.c
netfilter: nf_conntrack: flush net_gre->keymap_list only from gre helper
2014-04-08 10:56:12 +02:00
nf_conntrack_proto_sctp.c
netfilter: add my copyright statements
2013-04-18 20:27:55 +02:00
nf_conntrack_proto_tcp.c
netfilter: nf_conntrack: allow server to become a client in TW handling
2014-10-22 14:12:50 +02:00
nf_conntrack_proto_udp.c
netfilter: add my copyright statements
2013-04-18 20:27:55 +02:00
nf_conntrack_proto_udplite.c
netfilter: nf_log: prepare net namespace support for loggers
2013-04-05 20:12:54 +02:00
nf_conntrack_proto.c
netfilter: nf_conntrack: remove dead code
2014-01-03 23:41:37 +01:00
nf_conntrack_sane.c
netfilter: nf_ct_helper: better logging for dropped packets
2013-02-19 02:48:05 +01:00
nf_conntrack_seqadj.c
netfilter: only warn once on wrong seqadj usage
2014-01-06 14:23:17 +01:00
nf_conntrack_sip.c
netfilter: replace strnicmp with strncasecmp
2014-10-14 02:18:24 +02:00
nf_conntrack_snmp.c
netfilter: nf_ct_snmp: add include file
2013-01-18 00:28:18 +01:00
nf_conntrack_standalone.c
net: use ktime_get_ns() and ktime_get_real_ns() helpers
2014-08-22 19:57:23 -07:00
nf_conntrack_tftp.c
netfilter: add my copyright statements
2013-04-18 20:27:55 +02:00
nf_conntrack_timeout.c
netfilter: nf_ct_timeout: move initialization out of pernet_operations
2013-01-23 12:56:02 +01:00
nf_conntrack_timestamp.c
netfilter: nf_ct_timestamp: Fix BUG_ON after netns deletion
2013-12-20 14:58:29 +01:00
nf_internals.h
net: misc: Remove extern from function prototypes
2013-10-19 19:12:11 -04:00
nf_log_common.c
netfilter: use IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
2014-10-02 18:30:54 +02:00
nf_log.c
netfilter: replace strnicmp with strncasecmp
2014-10-14 02:18:24 +02:00
nf_nat_amanda.c
netfilter: add my copyright statements
2013-04-18 20:27:55 +02:00
nf_nat_core.c
net: use reciprocal_scale() helper
2014-08-23 12:21:21 -07:00
nf_nat_ftp.c
netfilter: nf_ct_helper: better logging for dropped packets
2013-02-19 02:48:05 +01:00
nf_nat_helper.c
netfilter: nf_conntrack: make sequence number adjustments usuable without NAT
2013-08-28 00:26:48 +02:00
nf_nat_irc.c
netfilter: nf_nat: fix access to uninitialized buffer in IRC NAT helper
2014-01-06 14:17:17 +01:00
nf_nat_proto_common.c
netfilter: use IS_ENABLED() macro
2014-06-30 11:38:03 +02:00
nf_nat_proto_dccp.c
netfilter: use IS_ENABLED() macro
2014-06-30 11:38:03 +02:00
nf_nat_proto_sctp.c
netfilter: use IS_ENABLED() macro
2014-06-30 11:38:03 +02:00
nf_nat_proto_tcp.c
netfilter: use IS_ENABLED() macro
2014-06-30 11:38:03 +02:00
nf_nat_proto_udp.c
netfilter: use IS_ENABLED() macro
2014-06-30 11:38:03 +02:00
nf_nat_proto_udplite.c
netfilter: use IS_ENABLED() macro
2014-06-30 11:38:03 +02:00
nf_nat_proto_unknown.c
netfilter: add protocol independent NAT core
2012-08-30 03:00:14 +02:00
nf_nat_sip.c
netfilter: replace strnicmp with strncasecmp
2014-10-14 02:18:24 +02:00
nf_nat_tftp.c
netfilter: nf_ct_helper: better logging for dropped packets
2013-02-19 02:48:05 +01:00
nf_queue.c
netfilter: use IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
2014-10-02 18:30:54 +02:00
nf_sockopt.c
netfilter: don't use mutex_lock_interruptible()
2014-08-08 16:47:23 +02:00
nf_synproxy_core.c
netfilter: nf_conntrack: don't release a conntrack with non-zero refcnt
2014-02-05 17:46:06 +01:00
nf_tables_api.c
netfilter: nf_tables: restrict nat/masq expressions to nat chain type
2014-10-13 20:42:00 +02:00
nf_tables_core.c
netfilter: nf_tables: 64bit stats need some extra synchronization
2014-07-14 12:00:17 +02:00
nf_tables_inet.c
netfilter: nf_tables: fix error path in the init functions
2014-01-09 23:25:48 +01:00
nfnetlink_acct.c
netfilter: nfnetlink_acct: add filter support to nfacct counter list/reset
2014-08-26 21:36:19 +02:00
nfnetlink_cthelper.c
netfilter: check return code from nla_parse_tested
2013-06-20 11:20:13 +02:00
nfnetlink_cttimeout.c
netfilter: cttimeout: allow to set/get default protocol timeouts
2013-10-01 13:17:39 +02:00
nfnetlink_log.c
netfilter: use IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
2014-10-02 18:30:54 +02:00
nfnetlink_queue_core.c
net: make skb_gso_segment error handling more robust
2014-10-20 12:38:13 -04:00
nfnetlink_queue_ct.c
netfilter: nf_conntrack: make sequence number adjustments usuable without NAT
2013-08-28 00:26:48 +02:00
nfnetlink.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2014-10-02 11:25:43 -07:00
nft_bitwise.c
netfilter: nf_tables: expression ops overloading
2013-10-14 17:16:08 +02:00
nft_byteorder.c
netfilter: nf_tables: expression ops overloading
2013-10-14 17:16:08 +02:00
nft_cmp.c
netfilter: nf_tables: fix nft_cmp_fast failure on big endian for size < 4
2014-04-14 10:38:02 +02:00
nft_compat.c
netfilter: nft_compat: validate chain type in match/target
2014-10-18 14:14:07 +02:00
nft_counter.c
netfilter: nf_tables: expression ops overloading
2013-10-14 17:16:08 +02:00
nft_ct.c
netfilter: nft_ct: split nft_ct_init() into two functions for get/set
2014-04-02 21:29:45 +02:00
nft_expr_template.c
netfilter: nf_tables: expression ops overloading
2013-10-14 17:16:08 +02:00
nft_exthdr.c
netfilter: nft_exthdr: call ipv6_find_hdr() with explicitly initialized offset
2013-12-20 11:25:10 +01:00
nft_hash.c
netfilter: nft_hash: no need for rcu in the hash set destroy path
2014-09-03 10:57:06 +02:00
nft_immediate.c
netfilter: nf_tables: restore context for expression destructors
2014-03-08 12:35:17 +01:00
nft_limit.c
netfilter: nf_tables: expression ops overloading
2013-10-14 17:16:08 +02:00
nft_log.c
netfilter: nft_log: fix coccinelle warnings
2014-06-29 13:55:08 +02:00
nft_lookup.c
netfilter: nf_tables: use new transaction infrastructure to handle sets
2014-05-19 12:06:10 +02:00
nft_masq.c
netfilter: nf_tables: restrict nat/masq expressions to nat chain type
2014-10-13 20:42:00 +02:00
nft_meta.c
netfilter: nf_tables: add devgroup support in meta expresion
2014-09-09 16:31:23 +02:00
nft_nat.c
netfilter: nft_nat: dump attributes if they are set
2014-10-18 14:16:13 +02:00
nft_payload.c
netfilter: nf_tables: check if payload length is a power of 2
2014-02-17 11:21:17 +01:00
nft_queue.c
netfilter: nf_tables: fix log/queue expressions for NFPROTO_INET
2014-02-06 11:41:38 +01:00
nft_rbtree.c
netfilter: nft_rbtree: no need for spinlock from set destroy path
2014-09-03 10:57:08 +02:00
nft_reject_inet.c
netfilter: nft_reject: introduce icmp code abstraction for inet and bridge
2014-10-02 18:29:57 +02:00
nft_reject.c
netfilter: fix wrong arithmetics regarding NFT_REJECT_ICMPX_MAX
2014-10-07 20:16:31 +02:00
x_tables.c
net/netfilter/x_tables.c: use __seq_open_private()
2014-09-26 18:42:29 +02:00
xt_addrtype.c
netfilter: xt_addrtype: fix trivial typo
2013-07-31 16:36:25 +02:00
xt_AUDIT.c
netfilter: Convert uses of __constant_<foo> to <foo>
2014-03-13 14:13:19 +01:00
xt_bpf.c
net: filter: split 'struct sk_filter' into socket and bpf parts
2014-08-02 15:03:58 -07:00
xt_cgroup.c
netfilter: x_tables: allow to use default cgroup match
2014-08-19 21:38:55 +02:00
xt_CHECKSUM.c
netfilter: add CHECKSUM target
2010-07-15 17:20:46 +02:00
xt_CLASSIFY.c
netfilter: xt_CLASSIFY: add ARP support, allow CLASSIFY target on any table
2010-11-15 13:57:56 +01:00
xt_cluster.c
net: use reciprocal_scale() helper
2014-08-23 12:21:21 -07:00
xt_comment.c
netfilter: xtables: deconstify struct xt_action_param for matches
2010-05-11 18:33:37 +02:00
xt_connbytes.c
netfilter: Convert pr_warning to pr_warn
2014-09-10 12:40:10 -07:00
xt_connlabel.c
netfilter: add connlabel conntrack extension
2013-01-18 00:28:15 +01:00
xt_connlimit.c
netfilter: connlimit: move lock array out of struct connlimit_data
2014-04-03 23:52:13 +02:00
xt_connmark.c
netfilter: Fix FSF address in file headers
2013-12-06 12:37:57 -05:00
xt_CONNSECMARK.c
netfilter: xtables: substitute temporary defines by final name
2010-05-11 18:31:17 +02:00
xt_conntrack.c
netfilter: add my copyright statements
2013-04-18 20:27:55 +02:00
xt_cpu.c
netfilter: xtables: add missing aliases for autoloading via iptables
2011-01-18 06:33:54 +01:00
xt_CT.c
netfilter: nf_conntrack: don't release a conntrack with non-zero refcnt
2014-02-05 17:46:06 +01:00
xt_dccp.c
netfilter: xtables: change hotdrop pointer to direct modification
2010-05-11 18:35:27 +02:00
xt_devgroup.c
netfilter: xtables: add device group match
2011-02-03 00:05:43 +01:00
xt_dscp.c
netfilter: xtables: deconstify struct xt_action_param for matches
2010-05-11 18:33:37 +02:00
xt_DSCP.c
netfilter: IPv6: fix DSCP mangle code
2011-05-10 10:00:21 +02:00
xt_ecn.c
netfilter: xtables: collapse conditions in xt_ecn
2011-12-27 20:45:25 +01:00
xt_esp.c
netfilter: xtables: change hotdrop pointer to direct modification
2010-05-11 18:35:27 +02:00
xt_hashlimit.c
netfilter: Convert pr_warning to pr_warn
2014-09-10 12:40:10 -07:00
xt_helper.c
netfilter: xtables: deconstify struct xt_action_param for matches
2010-05-11 18:33:37 +02:00
xt_hl.c
netfilter: Reduce switch/case indent
2011-07-01 16:11:15 -07:00
xt_HL.c
netfilter: Reduce switch/case indent
2011-07-01 16:11:15 -07:00
xt_HMARK.c
net: use reciprocal_scale() helper
2014-08-23 12:21:21 -07:00
xt_IDLETIMER.c
netfilter: Remove unnecessary OOM logging messages
2011-11-01 09:19:49 +01:00
xt_ipcomp.c
netfilter: xt_ipcomp: Use ntohs to ease sparse warning
2014-02-19 11:41:25 +01:00
xt_iprange.c
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
2011-02-04 14:28:58 -08:00
xt_ipvs.c
ipvs: API change to avoid rescan of IPv6 exthdr
2012-09-28 11:34:33 +09:00
xt_l2tp.c
netfilter: introduce l2tp match extension
2014-01-09 21:36:39 +01:00
xt_LED.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2014-08-05 18:46:26 -07:00
xt_length.c
netfilter: xtables: deconstify struct xt_action_param for matches
2010-05-11 18:33:37 +02:00
xt_limit.c
netfilter: add my copyright statements
2013-04-18 20:27:55 +02:00
xt_LOG.c
netfilter: xt_LOG: add missing string format in nf_log_packet()
2014-06-28 18:50:35 +02:00
xt_mac.c
netfilter: Convert compare_ether_addr to ether_addr_equal
2012-05-09 20:49:18 -04:00
xt_mark.c
netfilter: xtables: deconstify struct xt_action_param for matches
2010-05-11 18:33:37 +02:00
xt_multiport.c
netfilter: xtables: change hotdrop pointer to direct modification
2010-05-11 18:35:27 +02:00
xt_nat.c
netfilter: xt_nat: fix incorrect hooks for SNAT and DNAT targets
2012-10-15 13:39:12 +02:00
xt_NETMAP.c
netfilter: combine ipt_NETMAP and ip6t_NETMAP
2012-09-21 12:11:08 +02:00
xt_nfacct.c
netfilter: nfnetlink_acct: Adding quota support to accounting framework
2014-04-29 18:25:14 +02:00
xt_NFLOG.c
netfilter: log: netns NULL ptr bug when calling from conntrack
2013-05-15 14:11:07 +02:00
xt_NFQUEUE.c
netfilter: xt_NFQUEUE: separate reusable code
2013-12-07 23:20:45 +01:00
xt_osf.c
netfilter: Add {ipt,ip6t}_osf aliases for xt_osf
2014-04-03 23:52:22 +02:00
xt_owner.c
userns: xt_owner: Add basic user namespace support.
2012-08-14 21:55:30 -07:00
xt_physdev.c
netfilter: explicit module dependency between br_netfilter and physdev
2014-10-02 18:30:57 +02:00
xt_pkttype.c
netfilter: xtables: deconstify struct xt_action_param for matches
2010-05-11 18:33:37 +02:00
xt_policy.c
netfilter: xtables: deconstify struct xt_action_param for matches
2010-05-11 18:33:37 +02:00
xt_quota.c
net: Fix files explicitly needing to include module.h
2011-10-31 19:30:28 -04:00
xt_rateest.c
net_sched: add 64bit rate estimators
2013-06-11 02:51:03 -07:00
xt_RATEEST.c
net: sched: make bstats per cpu and estimator RCU safe
2014-09-30 01:02:26 -04:00
xt_realm.c
netfilter: xtables: deconstify struct xt_action_param for matches
2010-05-11 18:33:37 +02:00
xt_recent.c
net: use the new API kvfree()
2014-06-05 00:49:51 -07:00
xt_REDIRECT.c
netfilter: combine ipt_REDIRECT and ip6t_REDIRECT
2012-09-21 12:12:05 +02:00
xt_repldata.h
net: netfilter: LLVMLinux: vlais-netfilter
2014-06-07 11:44:39 -07:00
xt_sctp.c
netfilter: xt_sctp: use WORD_ROUND macro to calculate length of multiple of 4 bytes
2010-06-09 14:47:40 +02:00
xt_SECMARK.c
secmark: make secmark object handling generic
2010-10-21 10:12:48 +11:00
xt_set.c
netfilter: ipset: Add skbinfo extension support to SET target.
2014-09-15 22:20:21 +02:00
xt_socket.c
netfilter: xt_socket: use sock_gen_put()
2013-10-17 10:27:25 +02:00
xt_state.c
netfilter: nf_conntrack: IPS_UNTRACKED bit
2010-06-08 16:09:52 +02:00
xt_statistic.c
net: replace macros net_random and net_srandom with direct calls to prandom
2014-01-14 15:15:25 -08:00
xt_string.c
netfilter: xt_string: Remove unnecessary initialization of struct ts_state
2014-09-09 16:31:25 +02:00
xt_tcpmss.c
netfilter: xtables: change hotdrop pointer to direct modification
2010-05-11 18:35:27 +02:00
xt_TCPMSS.c
netfilter: xt_TCPMSS: lookup route from proper net namespace
2013-09-27 16:18:23 +02:00
xt_TCPOPTSTRIP.c
netfilter: xt_TCPOPTSTRIP: fix possible off by one access
2013-08-01 11:45:15 +02:00
xt_tcpudp.c
netfilter: xtables: change hotdrop pointer to direct modification
2010-05-11 18:35:27 +02:00
xt_TEE.c
net: pass info struct via netdevice notifier
2013-05-28 13:11:01 -07:00
xt_time.c
netfilter: xt_time: add support to ignore day transition
2012-09-24 14:29:01 +02:00
xt_TPROXY.c
ipv6: make lookups simpler and faster
2013-10-09 00:01:25 -04:00
xt_TRACE.c
netfilter: xtables: substitute temporary defines by final name
2010-05-11 18:31:17 +02:00
xt_u32.c
netfilter: xtables: deconstify struct xt_action_param for matches
2010-05-11 18:33:37 +02:00