<![CDATA[Cisco PIX disconnect issue.]]>First I would like to say wonderful software guys, great job.

In my deployment, I have around 15 remote sites all connected with IPSEC vpn tunnels "in a star fashion" the hub being a PfSense box. Two of the clients also use pfsense and are working beautifully. The rest are all Cisco PIX 501's. All but 4 of those work fine.

I followed the monowall guide in setting up these pix's and pfsense.

Those 4 pix's connect but will never stay connected. I must disable and renenable the trunk. I have a pingable address in "Automatically ping host", "86400" in lifetime and have tried switching between "2" and "off" on "PFS key group", all with no luck.

Here is a sample output of my ipsec log.

May 8 12:17:11 racoon: [BoothEnergy]: ERROR: X.X.X.X give up to get IPsec-SA due to time up to wait.
May 8 12:17:11 racoon: ERROR: not acceptable Identity Protection mode
May 8 12:17:10 racoon: [VPN to Inez]: INFO: initiate new phase 2 negotiation: X.X.X.X[0]<=>X.X.X.X[0]
May 8 12:17:10 last message repeated 2 times
May 8 12:17:06 racoon: ERROR: not acceptable Identity Protection mode
May 8 12:17:04 racoon: [Argus]: INFO: initiate new phase 2 negotiation: X.X.X.X[0]<=>X.X.X.X[0]
May 8 12:17:03 last message repeated 4 times
May 8 12:16:56 racoon: ERROR: not acceptable Identity Protection mode
May 8 12:16:54 racoon: [Marco]: ERROR: 65.82.252.245 give up to get IPsec-SA due to time up to wait.
May 8 12:16:53 racoon: ERROR: not acceptable Identity Protection mode
May 8 12:16:51 racoon: ERROR: not acceptable Identity Protection mode
May 8 12:16:50 racoon: [Argus]: ERROR: X.X.X.X give up to get IPsec-SA due to time up to wait.
May 8 12:16:48 racoon: ERROR: not acceptable Identity Protection mode
May 8 12:16:46 racoon: ERROR: not acceptable Identity Protection mode
May 8 12:16:43 racoon: [VPN to Inez]: ERROR: X.X.X.X give up to get IPsec-SA due to time up to wait.
May 8 12:16:43 last message repeated 2 times
May 8 12:16:41 racoon: ERROR: not acceptable Identity Protection mode
May 8 12:16:41 racoon: [BoothEnergy]: INFO: initiate new phase 2 negotiation: X.X.X.X[0]<=>X.X.X.X[0]
May 8 12:16:36 racoon: ERROR: not acceptable Identity Protection mode
May 8 12:16:31 racoon: ERROR: not acceptable Identity Protection mode
May 8 12:16:29 racoon: [Wright Management]: ERROR: X.X.X.X give up to get IPsec-SA due to time up to wait.
May 8 12:16:27 racoon: ERROR: not acceptable Identity Protection mode
May 8 12:16:26 racoon: ERROR: not acceptable Identity Protection mode
May 8 12:16:26 racoon: [Catletsburg]: INFO: IPsec-SA established: ESP/Tunnel X.X.X.X[0]->X.X.X.X[0] spi=1062033960(0x3f4d5a28)
May 8 12:16:26 racoon: [Catletsburg]: INFO: IPsec-SA established: ESP/Tunnel X.X.X.X[0]->X.X.X.X[0] spi=123063969(0x755cea1)
May 8 12:16:26 racoon: WARNING: attribute has been modified.
May 8 12:16:26 racoon: WARNING: ignore RESPONDER-LIFETIME notification.
May 8 12:16:26 racoon: [Catletsburg]: INFO: initiate new phase 2 negotiation: X.X.X.X[500]<=>X.X.X.X[500]
May 8 12:16:26 racoon: ERROR: not acceptable Identity Protection mode
May 8 12:16:25 racoon: INFO: purging spi=120073764.
May 8 12:16:25 racoon: [Catletsburg]: INFO: ISAKMP-SA established X.X.X.X[500]-X.X.X.X[500] spi:ff6cf9f0cd73451e:525ad03944c99436
May 8 12:16:25 racoon: NOTIFY: couldn't find the proper pskey, try to get one by the peer's address.
May 8 12:16:25 racoon: WARNING: port 62465 expected, but 0
May 8 12:16:25 racoon: INFO: received Vendor ID: CISCO-UNITY
May 8 12:16:25 racoon: INFO: received Vendor ID: DPD
May 8 12:16:25 racoon: INFO: received Vendor ID: draft-ietf-ipsra-isakmp-xauth-06.txt
May 8 12:16:24 racoon: [Marco]: INFO: initiate new phase 2 negotiation: X.X.X.X[0]<=>65.82.252.245[0]
May 8 12:16:24 racoon: INFO: begin Aggressive mode.
May 8 12:16:24 racoon: [Catletsburg]: INFO: initiate new phase 1 negotiation: X.X.X.X[500]<=>X.X.X.X[500]
May 8 12:16:24 racoon: [Catletsburg]: INFO: IPsec-SA request for X.X.X.X queued due to no phase1 found.
May 8 12:16:21 racoon: ERROR: not acceptable Identity Protection mode
May 8 12:16:21 racoon: ERROR: not acceptable Identity Protection mode
May 8 12:16:20 racoon: [Argus]: INFO: initiate new phase 2 negotiation: X.X.X.X[0]<=>X.X.X.X[0]
May 8 12:16:16 racoon: ERROR: not acceptable Identity Protection mode
May 8 12:16:16 racoon: ERROR: not acceptable Identity Protection mode
May 8 12:16:13 racoon: [Catletsburg]: INFO: ISAKMP-SA deleted X.X.X.X[500]-X.X.X.X[500] spi:7015b2e593734fd4:525ad03955769ff8
May 8 12:16:13 racoon: [VPN to Inez]: INFO: initiate new phase 2 negotiation: X.X.X.X[0]<=>X.X.X.X[0]
May 8 12:16:12 racoon: ERROR: phase2 negotiation failed due to phase1 expired. 7015b2e593734fd4:525ad03955769ff8:0000be31
May 8 12:16:11 last message repeated 2 times
May 8 12:16:06 racoon: ERROR: not acceptable Identity Protection mode

]]>https://forum.netgate.com/topic/8808/cisco-pix-disconnect-issueRSS for NodeWed, 12 Aug 2026 03:13:05 GMTThu, 08 May 2008 12:22:51 GMT60<![CDATA[Reply to Cisco PIX disconnect issue. on Tue, 15 Jul 2008 12:41:09 GMT]]>I've found a confirmation of what heiko said about the identification mode with a preshared key, in the source code
ipsec_doi.c
/* In main mode with pre-shared key, only address type can be used. */

]]>https://forum.netgate.com/post/177369https://forum.netgate.com/post/177369Tue, 15 Jul 2008 12:41:09 GMT<![CDATA[Reply to Cisco PIX disconnect issue. on Wed, 14 May 2008 22:42:36 GMT]]>FWIW, I've had success connecting to PIX's without using no-xauth and no-config-mode
eg-
isakmp key ******** address x.x.x.x netmask 255.255.255.255

I also didn't have
isakmp identity address
isakmp nat-traversal 20
in my config. Otherwise similar- 6.3(5) on a 506

]]>https://forum.netgate.com/post/173713https://forum.netgate.com/post/173713Wed, 14 May 2008 22:42:36 GMT<![CDATA[Reply to Cisco PIX disconnect issue. on Wed, 14 May 2008 19:25:21 GMT]]>If you have on both sides static ip´s please test this as the  last slight hope, sorry but I haven´t a pix at the moment to duplicate your test

]]>https://forum.netgate.com/post/173693https://forum.netgate.com/post/173693Wed, 14 May 2008 19:25:21 GMT<![CDATA[Reply to Cisco PIX disconnect issue. on Wed, 14 May 2008 15:15:10 GMT]]>I choose all of the following because that is what was required by the monowall instructions.

]]>https://forum.netgate.com/post/173673https://forum.netgate.com/post/173673Wed, 14 May 2008 15:15:10 GMT<![CDATA[Reply to Cisco PIX disconnect issue. on Wed, 14 May 2008 12:12:43 GMT]]>it looks OK, why do you choose "aggressive" mode and not main mode, did you try for phase 1 a lifetime "28800" and phase 2 "86400"?
Do you have tested it with SHA not MD5 and what errors shows the pix log?

]]>https://forum.netgate.com/post/173659https://forum.netgate.com/post/173659Wed, 14 May 2008 12:12:43 GMT<![CDATA[Reply to Cisco PIX disconnect issue. on Wed, 14 May 2008 11:48:35 GMT]]>Heres the config of my tunnel.

config.JPG
config.JPG_thumb

]]>https://forum.netgate.com/post/173657https://forum.netgate.com/post/173657Wed, 14 May 2008 11:48:35 GMT<![CDATA[Reply to Cisco PIX disconnect issue. on Wed, 14 May 2008 08:20:07 GMT]]>can you post your ipsec tunnel config from pfsense-side, are both sides static?

racoon: ERROR: not acceptable Identity Protection mode –> maybe an MD5 or SHA problem in your config?

]]>https://forum.netgate.com/post/173634https://forum.netgate.com/post/173634Wed, 14 May 2008 08:20:07 GMT<![CDATA[Reply to Cisco PIX disconnect issue. on Wed, 14 May 2008 01:44:54 GMT]]>I already do. Here is the config of one of my PIX's.

Building configuration…
: Saved
:
PIX Version 6.3(4)
interface ethernet0 auto
interface ethernet1 100full
nameif ethernet0 outside security0
nameif ethernet1 inside security100
enable password lAUX2PI8tpE7r9bA encrypted
passwd lAUX2PI8tpE7r9bA encrypted
hostname pixcat
domain-name ANY.COM
fixup protocol dns maximum-length 512
fixup protocol ftp 21
fixup protocol h323 h225 1720
fixup protocol h323 ras 1718-1719
fixup protocol http 80
fixup protocol rsh 514
fixup protocol rtsp 554
fixup protocol sip 5060
fixup protocol sip udp 5060
fixup protocol skinny 2000
fixup protocol smtp 25
fixup protocol sqlnet 1521
fixup protocol tftp 69
names
name 192.168.145.0 VPN_Client
name 192.0.1.0 Lexington
object-group service port-RTP-tcp tcp
  port-object range 10000 20000
object-group service port-RTP-udp udp
  port-object range 10000 20000
object-group service port-SIP-tcp tcp
  port-object range 5004 5082
object-group service port-SIP-udp udp
  port-object range 5004 5082
access-list outside_access_in permit icmp any any echo-reply
access-list outside_access_in permit ip host Clark any
access-list outside_access_in permit tcp any any eq 10000
access-list outside_access_in permit udp any any eq 10000
access-list inside_outbound_nat0_acl permit ip 192.168.6.0 255.255.255.0 Lexington 255.255.255.0
access-list inside_outbound_nat0_acl permit ip 192.168.6.0 255.255.255.0 VPN_Client 255.255.255.0
access-list inside_outbound_nat0_acl permit ip 192.168.6.0 255.255.255.0 192.168.1.0 255.255.255.0
access-list outside_cryptomap_21 permit ip 192.168.6.0 255.255.255.0 Lexington 255.255.255.0
access-list outside_cryptomap_21 permit ip 192.168.6.0 255.255.255.0 192.168.1.0 255.255.255.0
access-list MyVoip permit tcp host 192.168.6.164 host X.X.X.X1 object-group port-RTP-tcp
access-list MyVoip permit tcp host 192.168.6.164 host X.X.X.X1 object-group port-SIP-tcp
access-list MyVoip permit udp host 192.168.6.164 host X.X.X.X1 object-group port-RTP-udp
access-list MyVoip permit udp host 192.168.6.164 host X.X.X.X1 object-group port-SIP-udp
access-list MyVoip permit tcp host 192.168.6.164 host X.X.X.X1 eq 2727
pager lines 24
mtu outside 1500
mtu inside 1500
ip address outside pppoe setroute
ip address inside 192.168.6.1 255.255.255.0
ip audit info action alarm
ip audit attack action alarm
ip local pool vpnpool 192.168.145.1-192.168.145.5 mask 255.255.255.0
pdm location Lexington 255.255.255.0 outside
pdm location VPN_Client 255.255.255.0 outside
pdm location Clark 255.255.255.255 outside
pdm location 192.168.4.154 255.255.255.255 inside
pdm location 192.168.6.156 255.255.255.255 inside
pdm location 192.168.1.0 255.255.255.0 outside
pdm location 192.168.6.164 255.255.255.255 outside
pdm location 192.168.1.0 255.255.255.0 inside
pdm logging informational 100
pdm history enable
arp timeout 14400
global (outside) 1 interface
nat (inside) 0 access-list inside_outbound_nat0_acl
nat (inside) 1 0.0.0.0 0.0.0.0 0 0
static (inside,outside) tcp interface 10000 192.168.6.156 10000 netmask 255.255.255.255 0 0
static (inside,outside) udp interface 10000 192.168.6.156 10000 netmask 255.255.255.255 0 0
access-group MyVoip in interface outside
timeout xlate 0:05:00
timeout conn 1:00:00 half-closed 0:10:00 udp 0:02:00 rpc 0:10:00 h225 1:00:00
timeout h323 0:05:00 mgcp 0:05:00 sip 0:30:00 sip_media 0:02:00
timeout uauth 0:05:00 absolute
aaa-server TACACS+ protocol tacacs+
aaa-server TACACS+ max-failed-attempts 3
aaa-server TACACS+ deadtime 10
aaa-server RADIUS protocol radius
aaa-server RADIUS max-failed-attempts 3
aaa-server RADIUS deadtime 10
aaa-server LOCAL protocol local
http server enable
http 192.168.6.0 255.255.255.0 inside
no snmp-server location
no snmp-server contact
snmp-server community public
no snmp-server enable traps
floodguard enable
sysopt connection permit-ipsec
crypto ipsec transform-set myset esp-3des esp-md5-hmac
crypto dynamic-map outside_dyn_map 10 set transform-set myset
crypto map outside_map 21 ipsec-isakmp
crypto map outside_map 21 match address outside_cryptomap_21
crypto map outside_map 21 set peer x.x.x.x
crypto map outside_map 21 set transform-set myset
crypto map outside_map 65535 ipsec-isakmp dynamic outside_dyn_map
crypto map outside_map interface outside
isakmp enable outside
isakmp key ******** address x.x.x.x netmask 255.255.255.255 no-xauth no-config-mode
isakmp identity address
isakmp nat-traversal 20
isakmp policy 10 authentication pre-share
isakmp policy 10 encryption 3des
isakmp policy 10 hash md5
isakmp policy 10 group 2
isakmp policy 10 lifetime 86400
vpngroup eavpn1 address-pool vpnpool
vpngroup eavpn1 dns-server 192.0.1.31
vpngroup eavpn1 wins-server 192.0.1.31
vpngroup eavpn1 default-domain any.com
vpngroup eavpn1 idle-time 1800
vpngroup eavpn1 password ********
telnet 0.0.0.0 0.0.0.0 outside
telnet 192.168.6.0 255.255.255.0 inside
telnet timeout 5
ssh Clark 255.255.255.255 outside
ssh 0.0.0.0 0.0.0.0 outside
ssh 0.0.0.0 0.0.0.0 inside
ssh timeout 5
management-access inside
console timeout 0
vpdn group PPPOEX request dialout pppoe
vpdn group PPPOEX localname eliteky
vpdn group PPPOEX ppp authentication pap
vpdn username eliteky password *********
dhcpd address 192.168.6.30-192.168.6.50 inside
dhcpd dns 192.168.1.3
dhcpd wins 192.0.1.31
dhcpd lease 3600
dhcpd ping_timeout 750
dhcpd auto_config outside
dhcpd enable inside
terminal width 80
Cryptochecksum:485a43c0741d54b44b74016ab728e644
: end
[OK]

]]>https://forum.netgate.com/post/173622https://forum.netgate.com/post/173622Wed, 14 May 2008 01:44:54 GMT<![CDATA[Reply to Cisco PIX disconnect issue. on Tue, 13 May 2008 14:21:01 GMT]]>Hello,

Racoon really doesn’t want to recieve a FQDN when it’s trying to create a connection with a shared key.
Make sure the Cisco has the line

  • isakmp identity address in it’s config.

Don’t forget to set your DH and PFS number at the same number as the Cisco.
In the past i have had problems between pfsense and "cisco´s" with DPD.

Regards
Heiko

]]>https://forum.netgate.com/post/173591https://forum.netgate.com/post/173591Tue, 13 May 2008 14:21:01 GMT<![CDATA[Reply to Cisco PIX disconnect issue. on Tue, 13 May 2008 13:53:23 GMT]]>Still no replies from anyone but I am still attempting to help myself so here is what I'm doing and here are my results.

One of the trunks that keeps going down is a cisco PIX. So I remove the 86400 lifetime from SA 2. and kept group on 2 "I also tried off".

I get the exact same results.

I will try tonight adding the lifetime back and removing the first lifetime.

]]>https://forum.netgate.com/post/173586https://forum.netgate.com/post/173586Tue, 13 May 2008 13:53:23 GMT<![CDATA[Reply to Cisco PIX disconnect issue. on Fri, 09 May 2008 15:33:46 GMT]]>No help at all?

]]>https://forum.netgate.com/post/173353https://forum.netgate.com/post/173353Fri, 09 May 2008 15:33:46 GMT