Hi,
We are having problem with behavior of nat statement after upgrading ASA. Here are results of packet tracer in our testing environment:
object network onBK028VRRP
host 1.1.1.111
object network onSIEMServers
host 1.1.1.1
object service osSyslog
service tcp source eq telnet
object-group network ognBK028ClientsOutside
network-object 10.0.0.0 255.0.0.0
nat (inside,outside) source static onBK028VRRP onSIEMServers destination static ognBK028ClientsOutside ognBK028ClientsOutside service osSyslog osSyslog
ASA 8.4.5
packet-tracer input OUTSIDE tcp 10.1.1.1 50000 1.1.1.1 80 detailed
Phase: 1
Type: ROUTE-LOOKUP
Subtype: input
Result: ALLOW
Config:
Additional Information:
in 1.1.1.0 255.255.255.0 inside
Phase: 2
Type: ACCESS-LIST
Subtype: log
Result: ALLOW
Config:
access-group IZOUTSIDE in interface outside
access-list IZOUTSIDE extended permit tcp any any eq www
Additional Information:
Forward Flow based lookup yields rule:
in id=0xce99ccc8, priority=13, domain=permit, deny=false
hits=0, user_data=0xc91bc540, cs_id=0x0, use_real_addr, flags=0x0, protocol=6
src ip/id=0.0.0.0, mask=0.0.0.0, port=0
dst ip/id=0.0.0.0, mask=0.0.0.0, port=80, dscp=0x0
input_ifc=outside, output_ifc=any
Phase: 3
Type: IP-OPTIONS
Subtype:
Result: ALLOW
Config:
Additional Information:
Forward Flow based lookup yields rule:
in id=0xcb53d948, priority=0, domain=inspect-ip-options, deny=true
hits=42, user_data=0x0, cs_id=0x0, reverse, flags=0x0, protocol=0
src ip/id=0.0.0.0, mask=0.0.0.0, port=0
dst ip/id=0.0.0.0, mask=0.0.0.0, port=0, dscp=0x0
input_ifc=outside, output_ifc=any
Phase: 4
Type: IP-OPTIONS
Subtype:
Result: ALLOW
Config:
Additional Information:
Reverse Flow based lookup yields rule:
in id=0xcb561758, priority=0, domain=inspect-ip-options, deny=true
hits=40, user_data=0x0, cs_id=0x0, reverse, flags=0x0, protocol=0
src ip/id=0.0.0.0, mask=0.0.0.0, port=0
dst ip/id=0.0.0.0, mask=0.0.0.0, port=0, dscp=0x0
input_ifc=inside, output_ifc=any
Phase: 5
Type: FLOW-CREATION
Subtype:
Result: ALLOW
Config:
Additional Information:
New flow created with id 43, packet dispatched to next module
Module information for forward flow ...
snp_fp_tracer_drop
snp_fp_inspect_ip_options
snp_fp_tcp_normalizer
snp_fp_translate
snp_fp_adjacency
snp_fp_fragment
snp_ifc_stat
Module information for reverse flow ...
snp_fp_tracer_drop
snp_fp_inspect_ip_options
snp_fp_translate
snp_fp_tcp_normalizer
snp_fp_adjacency
snp_fp_fragment
snp_ifc_stat
Result:
input-interface: outside
input-status: up
input-line-status: up
output-interface: inside
output-status: up
output-line-status: up
Action: allow
ASA 9.1.1
packet-tracer input OUTSIDE tcp 10.1.1.1 50000 1.1.1.1 80 detailed
Phase: 1
Type: ROUTE-LOOKUP
Subtype: input
Result: ALLOW
Config:
Additional Information:
in 1.1.1.0 255.255.255.0 inside
Result:
input-interface: outside
input-status: up
input-line-status: up
output-interface: inside
output-status: up
output-line-status: up
Action: drop
Drop-reason: (no-route) No route to host
Which option change this?
BR, M.
