F5-asm and ace forward and reverse traffic

Hi all,
In our datacentre setup , we have f5 asm & ace- cisco for loadbalancing
in which f5 is configured with  self ip& below the selfip,the  nodeip is there which is inturn the
virtual ip for Ace t2 context
the incoming traffic on f5 is like
Publicip:xx--> f5.selfip:80-->Ace virtualip:yy
for the ace request handling is of below
Ace.virtualip:yy-->Rserver:xx
but here the issue is that reverse http response flow is some what not analogous
rserver:xx-->f5.selfip:80 & back to the Public ip
myquery is that why the reply back from the rserver is not given back to ace virtual ip, but to the
selfip of f5

Good morning,
You need to configure your routing in a way that the return traffic goes through the ACE. If you don't,  you may end up in the situation you are seeing
Daniel

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    JK
    (Certified LabVIEW Developer)
    Give Kudos for Good Answers, and Mark it a solution if your problem is solved.
    Attachments:
    Smoothing Filter Coefficients.vi ‏21 KB

  • %ASA-5-305013: Asymmetric NAT rules matched for forward and reverse flows; Connection for tcp src outside:10.159.159.3/49204 dst tru777:10.1.34.19/3389 denied due to NAT reverse path failure

    Hi,
    I have an ASA5510 running version 8.2(5). I have set up a new network on interface Ethernet0/1.777 of the fwl. The firewall works perfectly with remote access VPNs but has now given me the error with the new network that has been set up:
    %ASA-5-305013: Asymmetric NAT rules matched for forward and reverse flows; Connection for tcp src outside:10.159.159.3/49204 dst tru777:10.1.34.19/3389 denied due to NAT reverse path failure
    The difference between the other networks and the new one that I have set up is that this is the first one using a private addressing scheme. I understand that NAT is not allowing something along the way but I cant figure out what needs to change in order to get it to work. My config is as follows:
    interface Ethernet0/1.777
    description TRU 777
    vlan 777
    nameif tru777
    security-level 50
    ip address 10.1.34.17 255.255.255.240 standby 10.1.34.18
    access-list acl_tru777 remark * ALLOW ALL OUTBOUND *
    access-list acl_tru777 extended permit ip any any
    access-list RA-VPN extended permit ip 10.1.34.16 255.255.255.240 10.159.159.0 255.255.255.0
    access-list acl_no-nat extended permit ip 10.1.34.0 255.255.255.0 10.0.0.0 255.0.0.0
    access-list acl_no-nat extended permit ip 10.1.34.0 255.255.255.0 172.16.0.0 255.240.0.0
    access-list acl_no-nat extended permit ip 10.1.34.0 255.255.255.0 192.168.0.0 255.255.0.0
    access-list acl_ra-lock-tru777 extended permit ip 10.1.34.16 255.255.255.240 10.159.159.0 255.255.255.0
    access-list acl_ra-lock-tru777 extended permit ip 10.159.159.0 255.255.255.0 10.1.34.16 255.255.255.240
    ip local pool ra-pool 10.159.159.0-10.159.159.254 mask 255.255.255.0
    nat (tru777) 4 access-list acl_no-nat
    nat (tru777) 2 10.1.34.16 255.255.255.240
    global (outside) 2 x.x.x.x
    crypto isakmp nat-traversal 20
    I think that is everything you should need, if not please just ask.
    Thank you very much in advance,
    Chris

    Hi Julio,
    Here you go:
    FWL01# sh nameif
    Interface                Name                     Security
    Ethernet0/0              outside                    0
    Ethernet0/1              CLIENTS                 50
    Ethernet0/1.314        tru01                      50
    Ethernet0/1.313        dmz01                    50
    Ethernet0/1.316        tru02                      50
    Ethernet0/1.776        dmz776                  50
    Ethernet0/1.777        tru777                     50
    Management0/0       management           100
    FWL01#  sh run nat
    nat (tru02) 1 192.168.3.0 255.255.255.240
    nat (tru777) 4 access-list acl_no-nat
    nat (tru777) 2 10.1.34.16 255.255.255.240
    FWL01#    sh run glob
    global (outside) 1 interface
    global (outside) 2 x.x.x.x
    Thanks,
    Chris

  • Asymmetric NAT rules matched for forward and reverse flows

    Hi! I don't know why this comes up in the logs when I have configured my vpn like so:
    crypto dynamic-map L2L_MAP 50 set reverse-route
    crypto dynamic-map OUTSIDE_dyn_map 20 set transform-set ESP-3DES-SHA
    crypto dynamic-map OUTSIDE_dyn_map 40 set pfs
    crypto dynamic-map OUTSIDE_dyn_map 40 set transform-set ESP-3DES-SHA
    crypto dynamic-map OUTSIDE_dyn_map 60 set pfs
    crypto dynamic-map OUTSIDE_dyn_map 60 set transform-set ESP-3DES-SHA
    crypto dynamic-map OUTSIDE_dyn_map 65535 set transform-set ESP-3DES-SHA
    crypto dynamic-map OUTSIDE_dyn_map 65535 set security-association lifetime seconds 288000
    crypto dynamic-map OUTSIDE_dyn_map 65535 set security-association lifetime kilobytes 4608000
    crypto dynamic-map INSIDE_dyn_map 20 set transform-set ESP-3DES-SHA
    crypto map L2L_MAP 20 match address IDP_VPN
    crypto map L2L_MAP 20 set peer x.x.x.x
    crypto map L2L_MAP 20 set transform-set ESP-3DES-SHA
    crypto map L2L_MAP 40 match address cp_l2l_map_40
    crypto map L2L_MAP 40 set peer x.x.x.x
    crypto map L2L_MAP 40 set transform-set ESP-3DES-SHA
    crypto map L2L_MAP 60 match address bwi_l2l
    crypto map L2L_MAP 60 set peer x.x.x.x
    crypto map L2L_MAP 60 set transform-set ESP-3DES-SHA
    crypto map L2L_MAP 80 match address outside_80_cryptomap
    crypto map L2L_MAP 80 set peer x.x.x.x
    crypto map L2L_MAP 80 set transform-set ESP-3DES-SHA
    crypto map L2L_MAP 65535 ipsec-isakmp dynamic OUTSIDE_dyn_map
    crypto map L2L_MAP interface outside
    crypto map INSIDE_map 65535 ipsec-isakmp dynamic INSIDE_dyn_map
    crypto map INSIDE_map interface inside
    I am able to connect successfully via vpn client.  Its just that i cant reach the internal servers...  Any ideas?
    i get this error:
    Oct 18 2012 00:52:37: %ASA-5-305013: Asymmetric NAT rules matched for forward and reverse flows; Connection for udp src outside:10.10.13.221/137 dst inside:10.10.13.255/137 denied

    I put in the important configs:
    interface GigabitEthernet0/0
    nameif outside
    security-level 0
    ip address x.x.x.x 255.255.255.0 standby x.x.x.x
    ospf cost 10
    interface GigabitEthernet0/1
    nameif inside
    security-level 100
    ip address 10.10.13.5 255.255.255.0 standby 10.10.13.6
    ospf cost 10
    interface GigabitEthernet0/2
    nameif dmz
    security-level 50
    no ip address
    ospf cost 10
    interface GigabitEthernet0/2.720
    vlan 720
    nameif dmz-vsp
    security-level 50
    ip address 172.24.0.1 255.255.255.0 standby 172.24.0.2
    ospf cost 10
    interface GigabitEthernet0/2.724
    vlan 724
    nameif dmz-dbz
    security-level 75
    ip address 172.24.4.1 255.255.255.0 standby 172.24.4.2
    ospf cost 10
    interface GigabitEthernet0/2.725
    vlan 725
    nameif dmz-smtp
    security-level 50
    ip address 172.24.5.1 255.255.255.0 standby 172.24.5.2
    ospf cost 10
    dns domain-lookup outside
    dns domain-lookup inside
    dns server-group DefaultDNS
    name-server 10.10.10.50
    domain-name xxxx.local
    access-list nonatacl extended permit ip 10.10.0.0 255.255.0.0 10.40.4.0 255.255.255.0
    access-list nonatacl extended permit ip 172.16.0.0 255.255.0.0 10.40.4.0 255.255.255.0
    access-list nonatacl extended permit ip 192.168.2.0 255.255.255.0 10.40.4.0 255.255.255.0
    access-list nonatacl extended permit ip 192.168.3.0 255.255.255.0 10.40.4.0 255.255.255.0
    access-list nonatacl extended permit ip 10.10.0.0 255.255.0.0 10.40.14.0 255.255.255.0
    access-list nonatacl extended permit ip 10.10.13.0 255.255.255.0 10.10.10.0 255.255.255.0
    access-list nonatacl extended permit ip 10.10.10.0 255.255.255.0 10.10.13.0 255.255.255.0
    access-list nonatacl extended permit ip 10.10.13.0 255.255.255.0 192.168.6.0 255.255.255.0
    access-list nonatacl extended permit ip 192.168.6.0 255.255.255.0 10.10.13.0 255.255.255.0
    ip local pool inshse-vpn-pool2 192.168.6.220-192.168.6.230 mask 255.255.255.0
    global (outside) 201 192.168.16.1-192.168.16.250
    global (outside) 202 10.201.5.145-10.201.5.158
    global (outside) 4 10.10.13.180-10.10.13.189 netmask 255.0.0.0
    global (outside) 101 interface
    global (outside) 1 x.x.x.x netmask 255.0.0.0
    global (inside) 204 10.10.13.70-10.10.13.79 netmask 255.0.0.0
    nat (inside) 0 access-list nonatacl
    nat (inside) 201 access-list NAT_TO_IDP
    nat (inside) 202 access-list inside2-vsp_nat_outbound
    nat (inside) 101 0.0.0.0 0.0.0.0
    nat (dmz-vsp) 202 access-list dmz-vsp_nat_outbound
    nat (dmz-vsp) 101 0.0.0.0 0.0.0.0
    route outside 0.0.0.0 0.0.0.0 x.x.x.x 1
    route inside 10.0.0.0 255.240.0.0 10.10.13.1 1
    route inside 10.40.1.0 255.255.255.0 10.10.13.1 1
    route inside 10.40.2.0 255.255.255.0 10.10.13.1 1
    route inside 10.40.3.0 255.255.255.0 10.10.13.1 1
    route inside 10.40.4.0 255.255.255.0 10.10.13.1 1
    route inside 10.40.13.0 255.255.255.0 10.10.13.1 1
    route inside 10.40.254.0 255.255.255.0 10.10.13.1 1
    route inside 172.16.0.0 255.255.0.0 10.10.13.1 1
    route inside 192.168.2.0 255.255.255.0 10.10.13.1 1
    dynamic-access-policy-record DfltAccessPolicy
    aaa-server VPN_Auth protocol radius
    aaa-server VPN_Auth (inside) host 10.10.2.20
    timeout 5
    key *****
    no mschapv2-capable
    crypto ipsec transform-set ESP-3DES-SHA esp-3des esp-sha-hmac
    crypto ipsec security-association lifetime seconds 28800
    crypto ipsec security-association lifetime kilobytes 4608000
    crypto dynamic-map L2L_MAP 50 set reverse-route
    crypto dynamic-map OUTSIDE_dyn_map 20 set transform-set ESP-3DES-SHA
    crypto dynamic-map OUTSIDE_dyn_map 40 set pfs
    crypto dynamic-map OUTSIDE_dyn_map 40 set transform-set ESP-3DES-SHA
    crypto dynamic-map OUTSIDE_dyn_map 60 set pfs
    crypto dynamic-map OUTSIDE_dyn_map 60 set transform-set ESP-3DES-SHA
    crypto dynamic-map OUTSIDE_dyn_map 65535 set transform-set ESP-3DES-SHA
    crypto dynamic-map OUTSIDE_dyn_map 65535 set security-association lifetime seconds 288000
    crypto dynamic-map OUTSIDE_dyn_map 65535 set security-association lifetime kilobytes 4608000
    crypto dynamic-map INSIDE_dyn_map 20 set transform-set ESP-3DES-SHA
    crypto map L2L_MAP 20 match address IDP_VPN
    crypto map L2L_MAP 20 set peer x.x.x.x
    crypto map L2L_MAP 20 set transform-set ESP-3DES-SHA
    crypto map L2L_MAP 40 match address cp_l2l_map_40
    crypto map L2L_MAP 40 set peer x.x.x.x
    crypto map L2L_MAP 40 set transform-set ESP-3DES-SHA
    crypto map L2L_MAP 60 match address nonatacl
    crypto map L2L_MAP 60 set peer x.x.x.x
    crypto map L2L_MAP 60 set transform-set ESP-3DES-SHA
    crypto map L2L_MAP 80 match address outside_80_cryptomap
    crypto map L2L_MAP 80 set peer x.x.x.x
    crypto map L2L_MAP 80 set transform-set ESP-3DES-SHA
    crypto map L2L_MAP 65535 ipsec-isakmp dynamic OUTSIDE_dyn_map
    crypto map L2L_MAP interface outside
    crypto map INSIDE_map 65535 ipsec-isakmp dynamic INSIDE_dyn_map
    crypto map INSIDE_map interface inside
    crypto isakmp enable outside
    crypto isakmp enable inside
    crypto isakmp enable dmz
    crypto isakmp enable dmz-vsp
    crypto isakmp policy 20
    authentication pre-share
    encryption 3des
    hash sha
    group 2
    lifetime 86400
    crypto isakmp policy 65535
    authentication pre-share
    encryption 3des
    hash sha
    group 2
    lifetime 86400
    no vpn-addr-assign aaa
    no vpn-addr-assign dhcp
    group-policy ihasavpn2_gp internal
    group-policy ihasavpn2_gp attributes
    dns-server value 10.10.10.52
    vpn-tunnel-protocol IPSec
    default-domain value xxxx.local
    tunnel-group ihasavpn2 type remote-access
    tunnel-group ihasavpn2 general-attributes
    address-pool inshse-vpn-pool2
    authentication-server-group VPN_Auth
    authentication-server-group (inside) VPN_Auth
    default-group-policy ihasavpn2_gp
    tunnel-group ihasavpn2 ipsec-attributes
    pre-shared-key *****
    tunnel-group ihasavpn2 ppp-attributes
    authentication ms-chap-v2

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