07-21-2011 07:56 AM - edited 03-11-2019 02:01 PM
Hi all,
I can't receive mails from some customers, asa 5505 log get the message: "ASA_Outside|Deny TCP (no connection) from X.X.X.X/35702 to ASA_Outside/25 flags ACK on interface outside".
Anybody can help me?
Thanks in advance.
Solved! Go to Solution.
07-21-2011 08:50 AM
Could you just try removing the inspect esmtp and try again, to see if there arer any drops???
policy-map global_policy
class inspection_default
no inspect esmtp
Just chcek if it works without it.
Thanks,
Varun
07-21-2011 08:01 AM
Hi Diego,
Could you check the idle timeout values for connection? PLease provide the "sh run" from your firewall.
Regards,
Anu
07-21-2011 08:33 AM
Hi,
: Saved
:
ASA Version 7.2(2)
!
hostname fw01
domain-name domaincontrol.local
enable password 8Ry2YjIyt7RRXU24 encrypted
names
name 10.234.1.4 INT-AD1 description AD / RADIUS
name 10.254.0.1 R881G_Outside description Router 881 - Int Inside
name 10.254.0.2 ASA_Outside description ASA - Int Outside
name 10.234.0.1 ASA_Inside description ASA - Int Inside
!
interface Vlan1
nameif inside
security-level 100
ip address ASA_Inside 255.255.248.0
!
interface Vlan2
nameif outside
security-level 0
ip address ASA_Outside 255.255.255.0
!
interface Vlan3
no forward interface Vlan1
nameif DMZ
security-level 50
ip address 11.0.0.254 255.0.0.0
!
interface Ethernet0/0
switchport access vlan 2
!
interface Ethernet0/1
!
interface Ethernet0/2
!
interface Ethernet0/3
!
interface Ethernet0/4
!
interface Ethernet0/5
switchport access vlan 3
!
interface Ethernet0/6
!
interface Ethernet0/7
!
passwd 2KFQnbNIdI.2KYOU encrypted
banner login Domain Control
no ftp mode passive
clock timezone CEST 1
clock summer-time CEDT recurring last Sun Mar 2:00 last Sun Oct 3:00
dns domain-lookup inside
dns server-group DefaultDNS
name-server INT-AD1
domain-name domaincontrol.local
same-security-traffic permit inter-interface
access-list VPN- splitTunnelAcl standard permit 10.234.0.0 255.255.0.0
access-list VPN- splitTunnelAcl standard permit 10.254.0.0 255.255.255.0
access-list outside extended permit tcp any interface outside eq ftp
access-list outside extended permit tcp any interface outside eq ftp-data
access-list outside extended permit tcp any interface outside eq www
access-list outside extended permit tcp any interface outside eq 4434
access-list outside extended permit icmp any any echo-reply inactive
access-list outside extended permit ah any any
access-list outside extended permit esp any any
access-list outside extended permit udp any any eq isakmp
access-list outside extended permit udp any any eq 4500
access-list outside extended permit tcp any interface outside eq smtp
access-list outside extended permit tcp any interface outside eq https
access-list outside extended permit tcp any eq 3101 interface outside eq 3101
access-list inside_nat0_outbound extended permit ip 10.234.0.0 255.255.248.0 192.168.200.0 255.255.255.224
access-list inside_nat0_outbound extended permit ip 10.234.0.0 255.255.248.0 11.0.0.0 255.0.0.0
pager lines 24
logging enable
logging asdm debugging
logging class vpn asdm debugging
mtu inside 1500
mtu outside 1500
mtu DMZ 1500
ip local pool VPN-POOL 192.168.200.1-192.168.200.20 mask 255.255.255.0
ip verify reverse-path interface outside
icmp unreachable rate-limit 1 burst-size 1
asdm image disk0:/asdm-522.bin
no asdm history enable
arp timeout 14400
global (outside) 1 interface
nat (inside) 0 access-list inside_nat0_outbound
nat (inside) 1 10.234.0.0 255.255.248.0
static (inside,outside) tcp interface ftp 10.234.1.17 ftp netmask 255.255.255.255
static (inside,outside) tcp interface ftp-data 10.234.1.17 ftp-data netmask 255.255.255.255
static (inside,outside) tcp interface www 10.234.1.6 www netmask 255.255.255.255
static (inside,outside) tcp interface 4434 10.234.1.6 4434 netmask 255.255.255.255
static (inside,outside) tcp interface https 10.234.1.6 https netmask 255.255.255.255
static (inside,outside) tcp interface smtp 10.234.1.6 smtp netmask 255.255.255.255
static (inside,outside) tcp interface 3101 10.234.1.6 3101 netmask 255.255.255.255
access-group outside in interface outside
route outside 0.0.0.0 0.0.0.0 R881G_Outside 1
timeout xlate 3:00:00
timeout conn 1:00:00 half-closed 0:10:00 udp 0:02:00 icmp 0:00:02
timeout sunrpc 0:10:00 h323 0:05:00 h225 1:00:00 mgcp 0:05:00 mgcp-pat 0:05:00
timeout sip 0:30:00 sip_media 0:02:00 sip-invite 0:03:00 sip-disconnect 0:02:00
timeout uauth 0:05:00 absolute
aaa-server RADIUS-SRV protocol radius
aaa-server RADIUS-SRV host INT-AD1
key Jj3Gyxk@p8MBbtp8TNRXo0mdH3^BgASVyi4w4LNCLGyM8YfROV!MUvfdIEIbDe8I
authentication-port 1812
accounting-port 1813
radius-common-pw Jj3Gyxk@p8MBbtp8TNRXo0mdH3^BgASVyi4w4LNCLGyM8YfROV!MUvfdIEIbDe8I
group-policy DfltGrpPolicy attributes
banner none
wins-server none
dns-server value 10.234.1.4
dhcp-network-scope none
vpn-access-hours none
vpn-simultaneous-logins 3
vpn-idle-timeout 30
vpn-session-timeout none
vpn-filter none
vpn-tunnel-protocol IPSec l2tp-ipsec webvpn
password-storage disable
ip-comp disable
re-xauth disable
group-lock none
pfs disable
ipsec-udp disable
ipsec-udp-port 10000
split-tunnel-policy tunnelall
split-tunnel-network-list none
default-domain none
split-dns none
intercept-dhcp 255.255.255.255 disable
secure-unit-authentication disable
user-authentication disable
user-authentication-idle-timeout 30
ip-phone-bypass disable
leap-bypass disable
nem disable
backup-servers keep-client-config
msie-proxy server none
msie-proxy method no-modify
msie-proxy except-list none
msie-proxy local-bypass disable
nac disable
nac-sq-period 300
nac-reval-period 36000
nac-default-acl none
address-pools none
client-firewall none
client-access-rule none
webvpn
functions url-entry file-access file-entry file-browsing mapi
html-content-filter none
homepage none
keep-alive-ignore 4
http-comp gzip
filter none
url-list value DOMAIN
customization value DfltCustomization
port-forward none
port-forward-name value Application Access
sso-server none
deny-message value Login was successful, but because certain criteria have not been met or due to some specific group policy, you do not have permission to use any of the VPN features. Contact your IT administrator for more information
svc none
svc keep-installer installed
svc keepalive none
svc rekey time none
svc rekey method none
svc dpd-interval client none
svc dpd-interval gateway none
svc compression deflate
group-policy VPN-DOMAIN internal
group-policy VPN-DOMAIN attributes
dns-server value 10.234.1.4
vpn-tunnel-protocol IPSec
split-tunnel-policy tunnelspecified
split-tunnel-network-list value VPN-splitTunnelAcl
default-domain value domain.local
username administrador password LxjqnCD0ffjLzeVB encrypted privilege 15
username vpndomain password 2RA3lIqXEXs6fU.B encrypted privilege 0
username vpndomain attributes
vpn-group-policy DfltGrpPolicy
username securegate password Pb7YMWNJ2A2.rdcF encrypted privilege 15
aaa authentication enable console LOCAL
aaa authentication http console LOCAL
aaa authentication ssh console LOCAL
aaa authentication telnet console LOCAL
http server enable 4443
http 10.234.0.0 255.255.248.0 inside
snmp-server location Terrassa
snmp-server contact Domain
snmp-server community SnmpDomain
snmp-server enable traps snmp authentication linkup linkdown coldstart
crypto ipsec transform-set ESP-3DES-SHA esp-3des esp-sha-hmac
crypto dynamic-map outside_dyn_map 20 set pfs
crypto dynamic-map outside_dyn_map 20 set transform-set ESP-3DES-SHA
crypto map outside_map 65535 ipsec-isakmp dynamic outside_dyn_map
crypto map outside_map interface outside
crypto isakmp enable outside
crypto isakmp policy 10
authentication pre-share
encryption 3des
hash sha
group 2
lifetime 86400
crypto isakmp nat-traversal 20
tunnel-group DefaultWEBVPNGroup general-attributes
authentication-server-group RADIUS-SRV
tunnel-group DefaultWEBVPNGroup webvpn-attributes
nbns-server INT-AD1 master timeout 2 retry 2
tunnel-group VPN-DOMAIN type ipsec-ra
tunnel-group VPN-DOMAIN general-attributes
address-pool VPN-POOL
authentication-server-group RADIUS-SRV LOCAL
default-group-policy VPN-DOMAIN
tunnel-group VPN-DOMAIN ipsec-attributes
pre-shared-key *
telnet 10.234.0.0 255.255.248.0 inside
telnet timeout 5
ssh 10.234.0.0 255.255.248.0 inside
ssh timeout 5
console timeout 0
dhcpd address 10.254.0.50-10.254.0.150 outside
dhcpd dns 10.254.0.4 interface outside
dhcpd option 3 ip 10.254.0.4 interface outside
dhcpd enable outside
!
!
class-map inspection_default
match default-inspection-traffic
!
!
policy-map type inspect dns preset_dns_map
parameters
message-length maximum 512
policy-map global_policy
class inspection_default
inspect h323 h225
inspect h323 ras
inspect rsh
inspect rtsp
inspect esmtp
inspect sqlnet
inspect skinny
inspect sunrpc
inspect xdmcp
inspect sip
inspect netbios
inspect tftp
inspect pptp
inspect ftp
inspect dns
inspect ipsec-pass-thru
inspect icmp
inspect icmp error
inspect http
policy-map asa_global_fw_policy
class inspection_default
inspect ftp
!
service-policy global_policy global
ntp server INT-AD1 source inside
webvpn
port 4433
enable outside
customization DfltCustomization
title text WebVPN Domain Control
username-prompt text USUARIO :
password-prompt text PASSWORD :
group-prompt text DOMINIO::
clear-button text Cancel.lar
login-title text Login Intranet Domain Control
login-message text Introducir usuario y password de dominio
logout-message text Sesion cerrada
logo file disk0:/LogoDomainControl.png
url-list DOMAIN "Produccion" cifs://10.234.1.2/d03-produc 5
url-list DOMAIN "Formacion" cifs://10.234.1.2/d05-forma 6
url-list DOMAIN "It" cifs://10.234.1.2/d06-it 7
url-list DOMAIN "Administracion" cifs://10.234.1.2/d01-admi 8
url-list DOMAIN "Comercial" cifs://10.234.1.2/d02-comer 9
url-list DOMAIN "wftp" cifs://10.234.1.2/r05-wftp 10
prompt hostname context
Cryptochecksum:445883abdec27b227c0eaad967e75250
: end
Thank you.
07-21-2011 08:50 AM
Could you just try removing the inspect esmtp and try again, to see if there arer any drops???
policy-map global_policy
class inspection_default
no inspect esmtp
Just chcek if it works without it.
Thanks,
Varun
07-21-2011 09:13 AM
Thank you, it worked!
What is the reason? SMTP don't work with ESMTP?
07-21-2011 09:18 AM
Hey thats great, there are ceratin commands that the mail servers and clients push which are not recognized by the esmtp inspection, due to which it drops the connection, kindly go through this doc:
http://www.cisco.com/en/US/customer/docs/security/asa/asa82/command/reference/i2.html#wp1742723
Thanks,
Varun
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