Slowpath security checks failed

tareken87 — Tue, 12 Mar 2019 04:30:27 GMT

Hi ,

I have the following problem when i apply packet tracer command:

Result of the command: "packet-tracer input internal tcp 192.168.1.13 25 192.168.3.10 smtp"

Phase: 1
Type: ROUTE-LOOKUP
Subtype: input
Result: ALLOW
Config:
Additional Information:
in 192.168.3.0 255.255.255.0 EXTERNAL

Phase: 2
Type: IP-OPTIONS
Subtype:
Result: ALLOW
Config:
Additional Information:

Phase: 3
Type: INSPECT
Subtype: inspect-smtp
Result: ALLOW
Config:
Additional Information:

Phase: 4
Type: NAT
Subtype:
Result: ALLOW
Config:
object network Mail-Server
nat (INTERNAL,EXTERNAL) static 192.168.3.10
Additional Information:
Static translate 192.168.1.13/25 to 192.168.3.10/25

Phase: 5
Type: NAT
Subtype: rpf-check
Result: ALLOW
Config:
nat (INTERNAL,EXTERNAL) after-auto source dynamic OBJ_GENERIC_ALL interface
Additional Information:

Result:
input-interface: INTERNAL
input-status: up
input-line-status: up
output-interface: EXTERNAL
output-status: up
output-line-status: up
Action: drop
Drop-reason: (sp-security-failed) Slowpath security checks failed

#################

Result of the command: "show running-config"

ASA Version 8.4(5)
!

interface Ethernet0/0
nameif INTERNAL
security-level 100
ip address 192.168.1.254 255.255.255.0
!
interface Ethernet0/1
nameif TMG
security-level 90
ip address 192.168.2.2 255.255.255.0
!
interface Ethernet0/2
shutdown
no nameif
no security-level
no ip address
!
interface Ethernet0/3
nameif EXTERNAL
security-level 0
ip address 192.168.3.2 255.255.255.0
!
interface Management0/0
nameif management
security-level 100
ip address 192.168.0.1 255.255.255.0
management-only
!
ftp mode passive
object network OBJ_GENERIC_ALL
subnet 0.0.0.0 0.0.0.0
object network Mail-Server
host 192.168.1.13
access-list EXTERNAL_access extended permit tcp any object Mail-Server eq smtp
pager lines 24
logging asdm informational
mtu INTERNAL 1500
mtu EXTERNAL 1500
mtu management 1500
mtu TMG 1500
icmp unreachable rate-limit 1 burst-size 1
no asdm history enable
arp timeout 14400
no arp permit-nonconnected
!
object network Mail-Server
nat (INTERNAL,EXTERNAL) static 192.168.3.10
!
nat (INTERNAL,EXTERNAL) after-auto source dynamic OBJ_GENERIC_ALL interface
nat (TMG,EXTERNAL) after-auto source dynamic OBJ_GENERIC_ALL interface
access-group EXTERNAL_access in interface EXTERNAL
route EXTERNAL 0.0.0.0 0.0.0.0 192.168.3.1 1
timeout xlate 3:00:00
timeout pat-xlate 0:00:30
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 sip-provisional-media 0:02:00 uauth 0:05:00 absolute
timeout tcp-proxy-reassembly 0:01:00
timeout floating-conn 0:00:00
dynamic-access-policy-record DfltAccessPolicy
user-identity default-domain LOCAL
http server enable
http 192.168.0.0 255.255.255.0 management
http 192.168.1.0 255.255.255.0 INTERNAL
no snmp-server location
no snmp-server contact
snmp-server enable traps snmp authentication linkup linkdown coldstart warmstart
telnet timeout 5
ssh timeout 5
ssh key-exchange group dh-group1-sha1
console timeout 0
dhcpd address 192.168.0.2-192.168.0.254 management
dhcpd enable management
!
threat-detection basic-threat
threat-detection statistics access-list
no threat-detection statistics tcp-intercept
webvpn
!
class-map inspection_default
match default-inspection-traffic
!
!
policy-map type inspect dns preset_dns_map
parameters
message-length maximum client auto
message-length maximum 512
policy-map global_policy
class inspection_default
inspect dns preset_dns_map
inspect ftp
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 ip-options
!
service-policy global_policy global
prompt hostname context
no call-home reporting anonymous
Cryptochecksum:d6ec33d7249eec7c088f95b9d3827d9c
: end

My question is what is "sp-security" and why it drop my packets ??

Hi , Hope you got the

ciscosureshn — Sat, 14 Mar 2015 05:41:21 GMT

Hi ,

Hope you got the issue resolved.

If not please check the asp drops where you can identify the reason for security check drops.

# show asp drops

Most probably SP-Security (Slowpath) will be Session Management path. This path is responsible for

* Performing the access list checks
    * Performing route lookups
    * Allocating NAT translations (xlates)
    * Establishing sessions in the "fast path"

You can also provide the output of show asp drop here.

If issue resolved, please provide the solution here which can be more helpful.

Regards

Suresh

topic Slowpath security checks failed in Network Security

Slowpath security checks failed

Hi , Hope you got the