09-18-2013 08:42 AM
Related to my other question, can someone give a glance at this packet-tracer output and tell me if nat translation looks like it could be a problem for getting traffic from 10.100.0.0 across an l2l tunnel to 192.168.0.0? It says ALLOW, but it's not actually getting to the other end so something's not right...
Phase: 1
Type: CAPTURE
Subtype:
Result: ALLOW
Config:
Additional Information:
Forward Flow based lookup yields rule:
in id=0xd8ee0eb8, priority=12, domain=capture, deny=false
hits=191361263511, user_data=0xd8f867c8, cs_id=0x0, l3_type=0x0
src mac=0000.0000.0000, mask=0000.0000.0000
dst mac=0000.0000.0000, mask=0000.0000.0000
Phase: 2
Type: ACCESS-LIST
Subtype:
Result: ALLOW
Config:
Implicit Rule
Additional Information:
Forward Flow based lookup yields rule:
in id=0xd822d430, priority=1, domain=permit, deny=false
hits=118120795075, user_data=0x0, cs_id=0x0, l3_type=0x8
src mac=0000.0000.0000, mask=0000.0000.0000
dst mac=0000.0000.0000, mask=0100.0000.0000
Phase: 3
Type: FLOW-LOOKUP
Subtype:
Result: ALLOW
Config:
Additional Information:
Found no matching flow, creating a new flow
Phase: 4
Type: ROUTE-LOOKUP
Subtype: input
Result: ALLOW
Config:
Additional Information:
in 0.0.0.0 0.0.0.0 outside
Phase: 5
Type: IP-OPTIONS
Subtype:
Result: ALLOW
Config:
Additional Information:
Forward Flow based lookup yields rule:
in id=0xd822fb68, priority=0, domain=inspect-ip-options, deny=true
hits=581686914, user_data=0x0, cs_id=0x0, reverse, flags=0x0, protocol=0
src ip=0.0.0.0, mask=0.0.0.0, port=0
dst ip=0.0.0.0, mask=0.0.0.0, port=0, dscp=0x0
Phase: 6
Type: FOVER
Subtype: standby-update
Result: ALLOW
Config:
Additional Information:
Forward Flow based lookup yields rule:
in id=0xd82a4ce0, priority=21, domain=lu, deny=true
hits=22423067, user_data=0x0, cs_id=0x0, flags=0x0, protocol=6
src ip=0.0.0.0, mask=0.0.0.0, port=0
dst ip=0.0.0.0, mask=0.0.0.0, port=80, dscp=0x0
Phase: 7
Type: NAT-EXEMPT
Subtype:
Result: ALLOW
Config:
match ip inside 10.100.0.0 255.255.0.0 outside 192.168.0.0 255.255.0.0
NAT exempt
translate_hits = 45611518, untranslate_hits = 112889788
Additional Information:
Forward Flow based lookup yields rule:
in id=0xd82f45b0, priority=6, domain=nat-exempt, deny=false
hits=48955726, user_data=0xd82f44f0, cs_id=0x0, use_real_addr, flags=0x0, protocol=0
src ip=10.100.0.0, mask=255.255.0.0, port=0
dst ip=192.168.0.0, mask=255.255.0.0, port=0, dscp=0x0
Phase: 8
Type: NAT
Subtype:
Result: ALLOW
Config:
nat (inside) 1 10.100.0.0 255.255.0.0
match ip inside 10.100.0.0 255.255.0.0 outside any
dynamic translation to pool 1 (13.13.13.13 [Interface PAT])
translate_hits = 305268954, untranslate_hits = 93680730
Additional Information:
Forward Flow based lookup yields rule:
in id=0xd82f98f0, priority=1, domain=nat, deny=false
hits=417343285, user_data=0xd82f9830, cs_id=0x0, flags=0x0, protocol=0
src ip=10.100.0.0, mask=255.255.0.0, port=0
dst ip=0.0.0.0, mask=0.0.0.0, port=0, dscp=0x0
Phase: 9
Type: NAT
Subtype: host-limits
Result: ALLOW
Config:
nat (inside) 1 10.100.0.0 255.255.0.0
match ip inside 10.100.0.0 255.255.0.0 inside any
dynamic translation to pool 1 (No matching global)
translate_hits = 10, untranslate_hits = 0
Additional Information:
Forward Flow based lookup yields rule:
in id=0xd82f9440, priority=1, domain=host, deny=false
hits=543577845, user_data=0xd82f9028, cs_id=0x0, reverse, flags=0x0, protocol=0
src ip=10.100.0.0, mask=255.255.0.0, port=0
dst ip=0.0.0.0, mask=0.0.0.0, port=0, dscp=0x0
Phase: 10
Type: VPN
Subtype: encrypt
Result: ALLOW
Config:
Additional Information:
Forward Flow based lookup yields rule:
out id=0xd92b8a28, priority=70, domain=encrypt, deny=false
hits=962699, user_data=0x132ad1a4, cs_id=0xd8bb7488, reverse, flags=0x0, protocol=0
src ip=10.100.0.0, mask=255.255.0.0, port=0
dst ip=192.168.0.0, mask=255.255.0.0, port=0, dscp=0x0
Phase: 11
Type: VPN
Subtype: ipsec-tunnel-flow
Result: ALLOW
Config:
Additional Information:
Reverse Flow based lookup yields rule:
in id=0xdaac6160, priority=69, domain=ipsec-tunnel-flow, deny=false
hits=62623, user_data=0x15fb133c, cs_id=0x0, reverse, flags=0x0, protocol=0
src ip=192.168.0.0, mask=255.255.0.0, port=0
dst ip=10.100.0.0, mask=255.255.0.0, port=0, dscp=0x0
Phase: 12
Type: IP-OPTIONS
Subtype:
Result: ALLOW
Config:
Additional Information:
Reverse Flow based lookup yields rule:
in id=0xd827e798, priority=0, domain=inspect-ip-options, deny=true
hits=669582282, user_data=0x0, cs_id=0x0, reverse, flags=0x0, protocol=0
src ip=0.0.0.0, mask=0.0.0.0, port=0
dst ip=0.0.0.0, mask=0.0.0.0, port=0, dscp=0x0
Phase: 13
Type: FLOW-CREATION
Subtype:
Result: ALLOW
Config:
Additional Information:
New flow created with id 590217043, 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_encrypt
snp_fp_fragment
snp_ifc_stat
Module information for reverse flow ...
snp_fp_tracer_drop
snp_fp_inspect_ip_options
snp_fp_ipsec_tunnel_flow
snp_fp_translate
snp_fp_tcp_normalizer
snp_fp_adjacency
snp_fp_fragment
snp_ifc_stat
Result:
input-interface: inside
input-status: up
input-line-status: up
output-interface: outside
output-status: up
output-line-status: up
Action: allow
09-18-2013 08:50 PM
Hi,
As per the packet tracer, the NAT which was used is the NAT exempt:
Phase: 7
Type: NAT-EXEMPT
Subtype:
Result: ALLOW
Config:
match ip inside 10.100.0.0 255.255.0.0 outside 192.168.0.0 255.255.0.0
NAT exempt
translate_hits = 45611518, untranslate_hits = 112889788
Additional Information:
Forward Flow based lookup yields rule:
in id=0xd82f45b0, priority=6, domain=nat-exempt, deny=false
hits=48955726, user_data=0xd82f44f0, cs_id=0x0, use_real_addr, flags=0x0, protocol=0
src ip=10.100.0.0, mask=255.255.0.0, port=0
dst ip=192.168.0.0, mask=255.255.0.0, port=0, dscp=0x0
And until and unless you needed a translation for this traffic this packet tracer is looking good.
In case if you needed a translation then make sure you remove the interesting traffic from the NAT exempt.
in case if you have any further query please feel free to email me.
Thanks
Jeet Kumar
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