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linux/net/ipv4/netfilter
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David S. Miller 6e5714eaf7 net: Compute protocol sequence numbers and fragment IDs using MD5. 
Computers have become a lot faster since we compromised on the
partial MD4 hash which we use currently for performance reasons.

MD5 is a much safer choice, and is inline with both RFC1948 and
other ISS generators (OpenBSD, Solaris, etc.)

Furthermore, only having 24-bits of the sequence number be truly
unpredictable is a very serious limitation.  So the periodic
regeneration and 8-bit counter have been removed.  We compute and
use a full 32-bit sequence number.

For ipv6, DCCP was found to use a 32-bit truncated initial sequence
number (it needs 43-bits) and that is fixed here as well.

Reported-by: Dan Kaminsky <dan@doxpara.com>
Tested-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-08-06 18:33:19 -07:00
..
arp_tables.c Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/kaber/nf-next-2.6 2011-04-19 11:24:06 -07:00
arpt_mangle.c netfilter: arpt_mangle: fix return values of checkentry 2011-02-01 16:03:46 +01:00
arptable_filter.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
ip_queue.c netfilter: fix looped (broad|multi)cast's MAC handling 2011-06-16 17:27:04 +02:00
ip_tables.c netfilter: ip_tables: fix compile with debug 2011-06-16 17:16:37 +02:00
ipt_ah.c netfilter: xtables: change hotdrop pointer to direct modification 2010-05-11 18:35:27 +02:00
ipt_CLUSTERIP.c netfilter: Reduce switch/case indent 2011-07-01 16:11:15 -07:00
ipt_ecn.c netfilter: ipt_ecn: fix inversion for IP header ECN match 2011-06-16 17:24:55 +02:00
ipt_ECN.c netfilter: xtables: substitute temporary defines by final name 2010-05-11 18:31:17 +02:00
ipt_LOG.c netfilter: xt_LOG: do print MAC header on FORWARD 2010-11-15 11:23:06 +01:00
ipt_MASQUERADE.c netfilter: add more values to enum ip_conntrack_info 2011-06-06 01:35:10 +02:00
ipt_NETMAP.c netfilter: nf_nat: support user-specified SNAT rules in LOCAL_IN 2010-06-17 06:12:26 +02:00
ipt_REDIRECT.c netfilter: xtables: substitute temporary defines by final name 2010-05-11 18:31:17 +02:00
ipt_REJECT.c netfilter: Fix ip_route_me_harder triggering ip_rt_bug 2011-06-29 05:47:32 -07:00
ipt_ULOG.c netfilter: xtables: substitute temporary defines by final name 2010-05-11 18:31:17 +02:00
iptable_filter.c netfilter: cleanup printk messages 2010-05-13 15:02:08 +02:00
iptable_mangle.c netfilter: do not omit re-route check on NF_QUEUE verdict 2011-01-20 10:23:26 +01:00
iptable_raw.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
iptable_security.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
Kconfig netfilter: ipt_addrtype: rename to xt_addrtype 2011-03-15 20:16:20 +01:00
Makefile netfilter: ipt_addrtype: rename to xt_addrtype 2011-03-15 20:16:20 +01:00
nf_conntrack_l3proto_ipv4_compat.c Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6 into HEAD 2011-01-13 10:29:21 +09:00
nf_conntrack_l3proto_ipv4.c netfilter: nf_nat: avoid double seq_adjust for loopback 2011-06-16 17:29:22 +02:00
nf_conntrack_proto_icmp.c netfilter: nf_conntrack: fix ct refcount leak in l4proto->error() 2011-06-06 01:37:02 +02:00
nf_defrag_ipv4.c ip: introduce ip_is_fragment helper inline function 2011-06-21 20:33:34 -07:00
nf_nat_amanda.c netfilter: nf_nat_amanda: rename a variable 2010-11-15 18:45:12 +01:00
nf_nat_core.c netfilter: add more values to enum ip_conntrack_info 2011-06-06 01:35:10 +02:00
nf_nat_ftp.c netfilter: nf_nat: better error handling of nf_ct_expect_related() in helpers 2010-09-22 08:34:12 +02:00
nf_nat_h323.c netfilter: nf_nat: better error handling of nf_ct_expect_related() in helpers 2010-09-22 08:34:12 +02:00
nf_nat_helper.c netfilter: nf_nat: fix crash in nf_nat_csum 2011-06-06 01:36:46 +02:00
nf_nat_irc.c netfilter: nf_nat: better error handling of nf_ct_expect_related() in helpers 2010-09-22 08:34:12 +02:00
nf_nat_pptp.c netfilter: nf_conntrack: add support for "conntrack zones" 2010-02-15 18:13:33 +01:00
nf_nat_proto_common.c net: Compute protocol sequence numbers and fragment IDs using MD5. 2011-08-06 18:33:19 -07:00
nf_nat_proto_dccp.c netfilter: nf_nat: make unique_tuple return void 2010-08-02 17:20:54 +02:00
nf_nat_proto_gre.c netfilter: nf_nat: don't check if the tuple is unique when there isn't any other choice 2010-08-02 17:35:49 +02:00
nf_nat_proto_icmp.c netfilter: nf_nat: don't check if the tuple is unique when there isn't any other choice 2010-08-02 17:35:49 +02:00
nf_nat_proto_sctp.c netfilter: nf_nat: make unique_tuple return void 2010-08-02 17:20:54 +02:00
nf_nat_proto_tcp.c netfilter: nf_nat: make unique_tuple return void 2010-08-02 17:20:54 +02:00
nf_nat_proto_udp.c netfilter: nf_nat: make unique_tuple return void 2010-08-02 17:20:54 +02:00
nf_nat_proto_udplite.c netfilter: nf_nat: make unique_tuple return void 2010-08-02 17:20:54 +02:00
nf_nat_proto_unknown.c netfilter: nf_nat: make unique_tuple return void 2010-08-02 17:20:54 +02:00
nf_nat_rule.c netfilter: add more values to enum ip_conntrack_info 2011-06-06 01:35:10 +02:00
nf_nat_sip.c netfilter: nf_nat: better error handling of nf_ct_expect_related() in helpers 2010-09-22 08:34:12 +02:00
nf_nat_snmp_basic.c netfilter: Reduce switch/case indent 2011-07-01 16:11:15 -07:00
nf_nat_standalone.c ip: introduce ip_is_fragment helper inline function 2011-06-21 20:33:34 -07:00
nf_nat_tftp.c netfilter: fix some coding styles and remove moduleparam.h 2010-04-13 11:25:41 +02:00