[Swan] BAD_PROPOSAL_SYNTAX, PAYLOAD_MALFORMED, KEY_LENGTH attribute

Antonio Scattolini antonio.scattolini at atpesercizio.it
Thu Apr 9 14:14:34 EEST 2015


Hi, I have at end 1:
Linux Openswan 2.4.6 (klips) on 2.6.17.11
and at end 2:
Libreswan 3.12 (klips) on 3.16.0-4-686-pae

ipsec barf at end 1 gives:
#15: STATE_QUICK_R2: IPsec SA established {ESP=>0x61b2c275 <0x4f3bc0f0
xfrm=AES_128-HMAC_SHA1 IPCOMP=x00006747 <0x00009191 NATD=none DPD=none}
#3: ignoring informational payload, type BAD_PROPOSAL_SYNTAX
#3: received and ignored informational message
#7: max number of retransmissions (2) reached STATE_QUICK_I1
#7: starting keying attempt 2 of an unlimited number
#17: initiating Quick Mode RSASIG+ENCRYPT+COMPRESS+TUNNEL+PFS+UP to replace
#7 {using isakmp#14}
#14: next payload type of ISAKMP Hash Payload has an unknown value: 97
#14: malformed payload in packet
#14: sending notification PAYLOAD_MALFORMED to a.b.c.d:500
#14: next payload type of ISAKMP Hash Payload has an unknown value: 62
#14: malformed payload in packet

ipsec barf at end 2 gives:
#21339: transition from state STATE_MAIN_R2 to state STATE_MAIN_R3
#21339: STATE_MAIN_R3: sent MR3, ISAKMP SA established {auth=RSA_SIG
cipher=oakley_3des_cbc_192 integ=5 group=MODP1536}
#20842: the peer proposed: 192.168.5.0/24:0/0 -> 192.168.3.0/24:0/0
#21340: IPsec encryption transform did not specify required KEY_LENGTH
attribute
#21340: sending encrypted notification BAD_PROPOSAL_SYNTAX to
85.44.60.33:500
#20842: Informational Exchange message must be encrypted
#20842: the peer proposed: 192.168.5.0/24:0/0 -> 192.168.3.0/24:0/0
#21346: IPsec encryption transform did not specify required KEY_LENGTH
attribute
#21346: sending encrypted notification BAD_PROPOSAL_SYNTAX to
85.44.60.33:500
#20842: Informational Exchange message must be encrypted

End 1 ipsec.conf:
config setup
	# klipsdebug=none
	# plutodebug="control parsing"
include /etc/ipsec.d/examples/no_oe.conf
conn end1-end2
        auto=start
        compress=yes
        authby=rsasig
        left=a.b.c.d
        leftsubnet=192.168.5.0/24
        leftid=@fw.end2.intranet
        right=%defaultroute
        rightsubnet=192.168.3.0/24
        rightid=@fw.end1.intranet
        leftrsasigkey=0sAQPmt...
	  rightrsasigkey=0sAQN0...

End 2 ipsec.conf:
config setup
	# klipsdebug=none
	# plutodebug="control parsing"
	protostack=klips
	interfaces="ipsec0=eth1"
	# nat_traversal=yes
	oe=off
conn end1-end2
        auto=start
        compress=yes
        authby=rsasig
        left=%defaultroute
        leftsubnet=192.168.5.0/24
        leftid=@fw.end2.intranet
        right=e.f.g.h
        rightsubnet=192.168.3.0/24
        rightid=@fw.end1.intranet
        leftrsasigkey=0sAQPmt...
        rightrsasigkey=0sAQN0...

I don't know how to make them work....

Antonio Scattolini



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