Solved

Allow Cisco Any-Connect VPN traffic through Firewall to Internal Network?

Posted on 2011-03-18
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3,205 Views
Last Modified: 2012-05-11
We have a Cisco 1811 Integrated Router running Cisco Any-Connect VPN.  I can connect just fine, and as long as no firewall policies are applied to the interfaces I can connect to local intranet recoures (through RDP, SMB, ICMP, etc.).  However, the second I enable the firewall (wether via ACLs or the current zone-member policy) I can no longer access intranet resources.  I can still connect to VPN, and ping and SSH into the router's inside interface...but I can no longer ping past the routers inside interface or access intranet resoruces via RDP, SMB, SSH, ICMP, etc.

I have placed a rule to allow all traffic from the VPN subnet to the Intranet subnet, but it seems to be ignoring this.  I know it's not a routing issue since traffic works fine when the Firewall is removed from the outside/inside interfaces.

I have enabled logging, and the log shows when packets are dropped due to an ACL...but I do not see any dropped packets or any notices at all in the log when I initiate VPN->intranet traffic with the firewall enabled.

Suggestions on where to start? Any help would be greatly appreciated!  Config is attached....

Thanks,
Robert
Building configuration...

Current configuration : 17620 bytes
!
version 12.4
no service pad
service tcp-keepalives-in
service tcp-keepalives-out
service timestamps debug datetime msec localtime show-timezone
service timestamps log datetime msec localtime show-timezone
service password-encryption
service sequence-numbers
!
hostname Cisco1811
!
boot-start-marker
boot-end-marker
!
security authentication failure rate 3 log
security passwords min-length 6
logging message-counter syslog
logging buffered 51200
logging console critical
!--snipped--
!
aaa new-model
!
!
aaa authentication login default local
aaa authentication login ciscocp_vpn_xauth_ml_1 local
aaa authorization exec default local 
!
!
aaa session-id common
clock timezone PCTime -8
!
crypto pki trustpoint TP-self-signed-3686776916
 enrollment selfsigned
 subject-name cn=IOS-Self-Signed-Certificate-3686776916
 revocation-check none
 rsakeypair TP-self-signed-3686776916
!
!
crypto pki certificate chain TP-self-signed-3686776916
 certificate self-signed 01
  30820254 308201BD A0030201 02020101 300D0609 2A864886 F70D0101 04050030 
  31312F30 2D060355 04031326 494F532D 53656C66 2D536967 6E65642D 43657274 
  69666963 6174652D 33363836 37373639 3136301E 170D3130 30343039 32323237 
  31305A17 0D323030 31303130 30303030 305A3031 312F302D 06035504 03132649 
  4F532D53 656C662D 5369676E 65642D43 65727469 66696361 74652D33 36383637 
  37363931 3630819F 300D0609 2A864886 F70D0101 01050003 818D0030 81890281 
  8100C25B 00F5DB0A C1BEDA0C D25027E8 E96F98C1 15BFCB4F E0B7A61C 74BF4B6E 
  26D79D81 30EBBE7B 0ACC8E15 5D47E1A1 BB7E406A 017F28EE 7CA381DD 5F2CB373 
  610CFB24 F6EFA618 56CB66FA ADA37FB9 EAC3ED65 FA414947 7C355606 1A64222F 
  8445E259 CE5C84B2 1F009152 FBAF091F FD4CDF66 DEE20AA7 5DD3CA68 C805455A 
  DE610203 010001A3 7C307A30 0F060355 1D130101 FF040530 030101FF 30270603 
  551D1104 20301E82 1C436973 636F3138 31312E65 632E7465 63686675 74757265 
  732E6F72 67301F06 03551D23 04183016 801474B4 A45571BF D040D764 D3A63752 
  C6F25B60 BF1A301D 0603551D 0E041604 1474B4A4 5571BFD0 40D764D3 A63752C6 
  F25B60BF 1A300D06 092A8648 86F70D01 01040500 03818100 0A2365CB B259676E 
  DCACE9CC 17CAC824 AACCFA44 75383EBC 1DF32AC0 5E4836B9 2030D128 FF28AE7D 
  1E41CDCC 180833B5 ABE0097F C9BCB1D5 C6F8B1CE 5416F24E 3665AA5A 7CE956FA 
  1DBBFFC6 B8B95D9D 6FD0C781 7A668C22 32ED7A90 86728782 658BCE49 49FB5AC0 
  F092C8BD 9E9B4E99 60EB911F 0483EC41 1CAC7269 1FB0044E
  	quit
dot11 syslog
no ip source-route
!
!
!
!
ip cef
no ip bootp server
ip domain name --snipped--
ip name-server internal.sub.net.7
ip name-server internal.sub.net.6
ip port-map http port tcp 7880 description PowerSchool
ip port-map user-protocol--1 port tcp 1337
ip port-map user-smtps port tcp 465 description Secure SMTP
ip port-map https port tcp from 2082 to 2087  description cPanel/WHM
ip port-map https port tcp 2222 8888 description DirectAdmin
no ipv6 cef
!
multilink bundle-name authenticated
!
!
!
!--Users Snipped--
! 
!
!
archive
 log config
  hidekeys
!
!
!
class-map type inspect match-all sdm-nat-user-protocol--1-1
 match access-group 103
 match protocol user-protocol--1
class-map type inspect match-any SDM_WEBVPN
 match access-group name SDM_WEBVPN
class-map type inspect match-all SDM_WEBVPN_TRAFFIC
 match class-map SDM_WEBVPN
 match access-group 104
class-map type inspect match-any sdm-cls-insp-traffic
 match protocol cuseeme
 match protocol dns
 match protocol ftp
 match protocol h323
 match protocol https
 match protocol icmp
 match protocol imap
 match protocol pop3
 match protocol netshow
 match protocol shell
 match protocol realmedia
 match protocol rtsp
 match protocol smtp extended
 match protocol sql-net
 match protocol streamworks
 match protocol tftp
 match protocol vdolive
 match protocol tcp
 match protocol udp
class-map type inspect match-all sdm-insp-traffic
 match class-map sdm-cls-insp-traffic
class-map type inspect match-any ICMP
 match protocol icmp
class-map type inspect match-any IP
 match protocol tcp
 match protocol udp
class-map type inspect match-any SDM-Voice-permit
 match protocol h323
 match protocol skinny
 match protocol sip
class-map type inspect match-any DHCP
 match protocol bootpc
 match protocol bootps
 match protocol dhcp-failover
class-map type inspect match-any Remote-Access
 match protocol ssh
 match protocol shell
 match protocol telnet
class-map type inspect match-any P2PIM
 match protocol aol
 match protocol msnmsgr
 match protocol ymsgr
 match protocol bittorrent
 match protocol directconnect
 match protocol edonkey
 match protocol fasttrack
 match protocol gnutella
 match protocol kazaa2
 match protocol winmx
class-map type inspect match-any sdm-cls-icmp-access
 match protocol icmp
 match protocol tcp
 match protocol udp
class-map type inspect match-any DNS
 match protocol dns
 match protocol ddns-v3
class-map type inspect match-all sdm-cls-sdm-inspect-2
 match class-map DNS
 match access-group name DNS
class-map type inspect match-any EMail
 match protocol smtp
 match protocol imap
 match protocol imaps
 match protocol imap3
 match protocol pop3
 match protocol pop3s
class-map type inspect match-all sdm-cls-sdm-inspect-3
 match class-map EMail
 match access-group name EMail
class-map type inspect match-any sdm-service-sdm-inspect-1
 match protocol http
 match protocol https
class-map type inspect match-any FTP
 match protocol ftp
 match protocol ftps
class-map type inspect match-all sdm-cls-sdm-inspect-1
 match class-map FTP
 match access-group name FTP
class-map type inspect match-any AnyIP
 match protocol tcp
 match protocol udp
class-map type inspect match-all sdm-cls-sdm-inspect-6
 match class-map AnyIP
 match access-group name VPNIn
class-map type inspect match-any smtps
 match protocol user-smtps
class-map type inspect match-all sdm-cls-sdm-inspect-7
 match class-map smtps
 match access-group name smtps
class-map type inspect match-any ntp
 match protocol ntp
class-map type inspect match-all sdm-cls-sdm-inspect-4
 match class-map ntp
 match access-group name NTP
class-map type inspect match-all sdm-cls-sdm-inspect-5
 match class-map IP
 match access-group name VPNOut
class-map type inspect match-all sdm-invalid-src
 match access-group 100
class-map type inspect match-all sdm-icmp-access
 match class-map sdm-cls-icmp-access
class-map type inspect match-all sdm-protocol-http
 match class-map sdm-service-sdm-inspect-1
 match access-group name outbound
class-map type inspect match-any any
!
!
policy-map type inspect sdm-permit-icmpreply
 class type inspect sdm-icmp-access
  inspect 
 class class-default
  pass
policy-map type inspect sdm-pol-NATOutsideToInside-1
 class type inspect sdm-nat-user-protocol--1-1
  inspect 
 class class-default
  drop
policy-map type inspect sdm-inspect
 class type inspect sdm-invalid-src
  drop log
 class type inspect sdm-cls-sdm-inspect-6
  inspect 
 class type inspect sdm-cls-sdm-inspect-5
  inspect 
 class type inspect ICMP
  inspect 
 class type inspect DHCP
  inspect 
 class type inspect Remote-Access
  drop log
 class type inspect P2PIM
 class type inspect sdm-cls-sdm-inspect-4
  inspect 
 class type inspect sdm-cls-sdm-inspect-2
  inspect 
 class type inspect sdm-cls-sdm-inspect-1
  inspect 
 class type inspect sdm-protocol-http
  inspect 
 class type inspect sdm-cls-sdm-inspect-3
  inspect 
 class type inspect sdm-cls-sdm-inspect-7
  inspect 
 class type inspect SDM-Voice-permit
  inspect 
 class class-default
  drop log
policy-map type inspect sdm-permit
 class type inspect SDM_WEBVPN_TRAFFIC
  inspect 
 class class-default
  drop
!
zone security out-zone
zone security in-zone
zone-pair security sdm-zp-self-out source self destination out-zone
 service-policy type inspect sdm-permit-icmpreply
zone-pair security sdm-zp-NATOutsideToInside-1 source out-zone destination in-zone
 service-policy type inspect sdm-pol-NATOutsideToInside-1
zone-pair security sdm-zp-out-self source out-zone destination self
 service-policy type inspect sdm-permit
zone-pair security sdm-zp-in-out source in-zone destination out-zone
 service-policy type inspect sdm-inspect
!
!
!
interface FastEthernet0
 description $ES_WAN$$ETH-WAN$$FW_OUTSIDE$
 ip address isp.sub.net.45 255.255.255.252
 no ip redirects
 no ip unreachables
 no ip proxy-arp
 ip flow ingress
 ip nat outside
 ip virtual-reassembly
 zone-member security out-zone
 duplex auto
 speed auto
!
interface FastEthernet1
 no ip address
 no ip redirects
 no ip unreachables
 no ip proxy-arp
 ip flow ingress
 shutdown
 duplex auto
 speed auto
!
interface FastEthernet2
 description TFEC
 switchport mode trunk
!
interface FastEthernet3
 description Gaucholan
 switchport access vlan 28
 shutdown
!
interface FastEthernet4
 shutdown
!
interface FastEthernet5
 shutdown
!
interface FastEthernet6
 shutdown
!
interface FastEthernet7
 shutdown
!
interface FastEthernet8
 shutdown
!
interface FastEthernet9
 shutdown
!
interface Vlan1
 description $ETH-SW-LAUNCH$$INTF-INFO-FE 2$$ES_LAN$$FW_INSIDE$
 ip address internal.sub.net.1 255.255.255.0
 no ip redirects
 no ip unreachables
 no ip proxy-arp
 ip flow ingress
 ip nat inside
 ip virtual-reassembly
 zone-member security in-zone
!
interface Vlan20
 description VoIP
 ip address 192.168.111.1 255.255.255.0
 ip nat inside
 ip virtual-reassembly
!
interface Async1
 no ip address
 no ip redirects
 no ip unreachables
 no ip proxy-arp
 encapsulation slip
 shutdown
!
ip local pool vpn_pool1 vpn.sub.net.2 vpn.sub.net.10
ip forward-protocol nd
ip route 0.0.0.0 0.0.0.0 isp.sub.net.46
ip http server
ip http authentication local
ip http secure-server
ip http timeout-policy idle 60 life 86400 requests 10000
!
!
ip nat pool pool1 internal.sub.net.0 vpn.sub.net.0 netmask 0.0.0.255
ip nat inside source list 1 interface FastEthernet0 overload
ip nat inside source static tcp internal.sub.net.7 1337 isp.sub.net.45 1337 extendable
!
ip access-list extended DNS
 remark SDM_ACL Category=128
 permit ip internal.sub.net.0 0.0.0.255 any
ip access-list extended EMail
 remark SDM_ACL Category=128
 permit ip internal.sub.net.0 0.0.0.255 any
ip access-list extended FTP
 remark SDM_ACL Category=128
 permit ip internal.sub.net.0 0.0.0.255 any
ip access-list extended NTP
 remark SDM_ACL Category=128
 permit ip internal.sub.net.0 0.0.0.255 any
ip access-list extended SDM_WEBVPN
 remark CCP_ACL Category=1
 remark SDM_ACL Category=17
 permit tcp any any eq 443
ip access-list extended VPNIn
 remark SDM_ACL Category=128
 permit ip vpn.sub.net.0 0.0.0.255 internal.sub.net.0 0.0.0.255
ip access-list extended VPNOut
 remark SDM_ACL Category=128
 permit ip internal.sub.net.0 0.0.0.255 vpn.sub.net.0 0.0.0.255
ip access-list extended outbound
 remark SDM_ACL Category=128
 permit ip internal.sub.net.0 0.0.0.255 any
ip access-list extended smtps
 remark SDM_ACL Category=128
 permit ip internal.sub.net.0 0.0.0.255 any
!
logging trap debugging
logging internal.sub.net.19
access-list 1 remark INSIDE_IF=Vlan1
access-list 1 remark SDM_ACL Category=2
access-list 1 permit internal.sub.net.0 0.0.0.255
access-list 2 remark SDM_ACL Category=2
access-list 2 permit experimental.sub.net.0 0.0.0.255
access-list 100 remark SDM_ACL Category=128
access-list 100 permit ip host 255.255.255.255 any
access-list 100 permit ip 127.0.0.0 0.255.255.255 any
access-list 100 permit ip isp.sub.net.44 0.0.0.3 any
access-list 101 remark auto generated by SDM firewall configuration
access-list 101 remark SDM_ACL Category=1
access-list 101 remark ssh
access-list 101 permit tcp internal.sub.net.0 0.0.0.255 any eq 22
access-list 101 remark DHCP
access-list 101 permit udp any any eq bootpc
access-list 101 remark DHCP
access-list 101 permit udp any any eq bootps
access-list 101 remark Web HTTP
access-list 101 permit tcp internal.sub.net.0 0.0.0.255 any eq www
access-list 101 remark SSL HTTPS
access-list 101 permit tcp internal.sub.net.0 0.0.0.255 any eq 443
access-list 101 remark DNS
access-list 101 permit udp internal.sub.net.0 0.0.0.255 any eq domain
access-list 101 remark DNS
access-list 101 permit tcp internal.sub.net.0 0.0.0.255 any eq domain
access-list 101 remark POP3
access-list 101 permit tcp internal.sub.net.0 0.0.0.255 any eq pop3
access-list 101 remark POP3 SSL
access-list 101 permit tcp internal.sub.net.0 0.0.0.255 any eq 995
access-list 101 remark SMTP
access-list 101 permit tcp internal.sub.net.0 0.0.0.255 any eq 465
access-list 101 remark SMTP SSL
access-list 101 permit tcp internal.sub.net.0 0.0.0.255 any eq 587
access-list 101 remark SMTP
access-list 101 permit tcp internal.sub.net.0 0.0.0.255 any eq smtp
access-list 101 remark IMAP
access-list 101 permit tcp internal.sub.net.0 0.0.0.255 any eq 143
access-list 101 remark IMAP SSL
access-list 101 permit tcp internal.sub.net.0 0.0.0.255 any eq 993
access-list 101 remark PowerSchool
access-list 101 permit tcp internal.sub.net.0 0.0.0.255 any eq 7880
access-list 101 remark FTP
access-list 101 permit tcp internal.sub.net.0 0.0.0.255 any eq ftp
access-list 101 remark FTP PASV
access-list 101 permit tcp internal.sub.net.0 0.0.0.255 any range 35000 36000
access-list 101 remark cPanel/WHM
access-list 101 permit tcp internal.sub.net.0 0.0.0.255 any range 2082 2087
access-list 102 remark auto generated by SDM firewall configuration
access-list 102 remark SDM_ACL Category=1
access-list 102 remark SSH
access-list 102 permit tcp any eq 22 internal.sub.net.0 0.0.0.255
access-list 102 remark DHCP
access-list 102 permit udp any eq bootps any
access-list 102 remark DHCP
access-list 102 permit udp any eq bootpc any
access-list 102 remark Web HTTP
access-list 102 permit tcp any eq www internal.sub.net.0 0.0.0.255
access-list 102 remark SSL HTTPS
access-list 102 permit tcp any eq 443 internal.sub.net.0 0.0.0.255
access-list 102 remark DNS
access-list 102 permit udp any eq domain internal.sub.net.0 0.0.0.255
access-list 102 remark DNS
access-list 102 permit tcp any eq domain internal.sub.net.0 0.0.0.255
access-list 102 remark POP3
access-list 102 permit tcp internal.sub.net.0 0.0.0.255 any eq pop3
access-list 102 remark POP3 SSL
access-list 102 permit tcp internal.sub.net.0 0.0.0.255 any eq 995
access-list 102 remark SMTP
access-list 102 permit tcp internal.sub.net.0 0.0.0.255 any eq 465
access-list 102 remark SMTP SSL
access-list 102 permit tcp internal.sub.net.0 0.0.0.255 any eq 587
access-list 102 remark SMTP
access-list 102 permit tcp internal.sub.net.0 0.0.0.255 any eq smtp
access-list 102 remark IMAP
access-list 102 permit tcp internal.sub.net.0 0.0.0.255 any eq 143
access-list 102 remark IMAP SSL
access-list 102 permit tcp internal.sub.net.0 0.0.0.255 any eq 993
access-list 102 remark FTP
access-list 102 permit tcp any internal.sub.net.0 0.0.0.255 eq ftp
access-list 102 remark PowerSchool
access-list 102 permit tcp any eq 7880 internal.sub.net.0 0.0.0.255
access-list 102 remark FTP PASV
access-list 102 permit tcp any range 35000 36000 internal.sub.net.0 0.0.0.255
access-list 102 remark cPanel/WHM
access-list 102 permit tcp any range 2082 2087 internal.sub.net.0 0.0.0.255
access-list 103 remark SDM_ACL Category=0
access-list 103 permit ip any host internal.sub.net.7
access-list 104 remark SDM_ACL Category=128
access-list 104 permit ip any host isp.sub.net.45
access-list 105 permit ip 0.0.0.0 255.255.255.0 0.0.0.0 255.255.255.0
no cdp run

!
!
!
!
!
!
control-plane
!
banner login ^CAuthorized access only!
 Disconnect IMMEDIATELY if you are not an authorized user!^C
banner motd ^CCCC
---------------------------------------------------------------------------

ALERT! You are entering a secured area! Your IP and login information
have been recorded. System administration has been notified.

This computer system is for authorized users only. All activity is logged and
regularly checked by systems personnel. Individuals using this system without
authority or in excess of their authority are subject to having all their
services revoked. Any illegal services run by user or attempts to take down
this server or its services will be reported to local law enforcement, and
said user will be punished to the full extent of the law. Anyone using this
system consents to these terms.

Warning - unauthorized access, attempted access, or use of any State computing
system is a violation of Section 502 of the CaliforniaPenal and/or applicable Federal Laws.

---------------------------------------------------------------------------
^C
!
line con 0
 transport output telnet
line 1
 modem InOut
 stopbits 1
 flowcontrol hardware
line aux 0
 transport output telnet
line vty 0 4
 transport input telnet ssh
line vty 5 15
 transport input telnet ssh
!
scheduler interval 500
!
webvpn gateway gateway_1
 ip address isp.sub.net.45 port 443  
 http-redirect port 80
 ssl trustpoint TP-self-signed-3686776916
 inservice
 !
webvpn install svc flash:/webvpn/anyconnect-win-2.3.0254-k9.pkg sequence 1
 !
webvpn context TFVPN
 secondary-color white
 title-color #FF9900
 text-color black
 ssl authenticate verify all
 !
 url-list "Intranet"
   heading "Intranet Sites"
   url-text "Stewie" url-value "http://internal.sub.net.19/"
 !
 !
 policy group policy_1
   url-list "Intranet"
   functions svc-enabled
   mask-urls
   svc address-pool "vpn_pool1"
   svc default-domain "ec.techfutures.org."
   svc keep-client-installed
   svc split dns "ec.techfutures.org."
   svc split include internal.sub.net.0 255.255.255.0
   svc split include experimental.sub.net.0 255.255.255.0
   svc dns-server primary internal.sub.net.6
   svc dns-server secondary internal.sub.net.7
 default-group-policy policy_1
 aaa authentication list ciscocp_vpn_xauth_ml_1
 gateway gateway_1 domain tfvpn
 max-users 5
 inservice
!
end

Open in new window

0
Comment
Question by:Robert Davis
  • 7
  • 6
16 Comments
 
LVL 4

Expert Comment

by:mpickreign
Comment Utility
Your ACLs are not really doing anything as they are not applied to specific interfaces. You are using zone based firewall rules. In which case you should review the following document.

http://www.cisco.com/en/US/products/ps8411products_configuration_example09186a0080b25941.shtml
0
 
LVL 4

Expert Comment

by:mpickreign
Comment Utility
Re-read your issue after reviewing the config.  I see where you say it is doing this no matter whether using ACL or zone based. Which ACL were you trying to use?
0
 
LVL 1

Author Comment

by:Robert Davis
Comment Utility
I applied an ACL previously but since that went nowhere I applied the zone-member based policies in SDM.  So now the question is, using the zone based policies (out-zone and in-zone), what do I need to change.  I tried an explicit allow via both and neither work.  I did have the ACLs applied when I was using them, I just left them in the config for reference.

Regards,
Robert
0
 
LVL 1

Author Comment

by:Robert Davis
Comment Utility
That link gets me this:
The Page You Have Requested Is Not Available
0
 
LVL 4

Expert Comment

by:mpickreign
Comment Utility
Sorry to leave you hanging so long...

Here is the  link I was trying to send you. Shows an example config of what you are trying to do with the zones you need to setup for the VPN

http://www.cisco.com/en/US/partner/products/ps8411/products_configuration_example09186a0080b25941.shtml

Let me know if this helps. If not I would recommend going back to the ACL setup as I think its a bit simpler and cleaner.
0
 
LVL 4

Expert Comment

by:mpickreign
Comment Utility
Also take note of the virtual interface they setup as that is a crucial piece of this config.
0
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LVL 1

Author Comment

by:Robert Davis
Comment Utility
Also take note of the virtual interface they setup as that is a crucial piece of this config.

Suggestions?

Thanks,
Robert
0
 
LVL 4

Expert Comment

by:mpickreign
Comment Utility
I was referring to the virtual interface shown in the document I linked for you. I would do it exactly the same as shown.
0
 
LVL 1

Author Comment

by:Robert Davis
Comment Utility
I cna't read the document you sent me...my CCO account doesn't give me access...
0
 
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Accepted Solution

by:
mpickreign earned 500 total points
Comment Utility
Ahh..sorry about that. I downloaded it in PDF form and attached it here for you.
anyconnect-ios-zbpf-config.pdf
0
 
LVL 1

Assisted Solution

by:Robert Davis
Robert Davis earned 0 total points
Comment Utility
Awesome!  I did exactly as the guide said and and nothing more and it works PERFECTLY.  I also took out my explicit 101 to 100 allow in the in-zone config.  Here's what I ran:

config t
interface Virtual-Template1
 ip unnumbered Loopback0
 zone-member security in-zone
!
exit
!
webvpn context TFVPN
 virtual-template 1

Open in new window


All done!  Thank you!
0
 
LVL 1

Author Comment

by:Robert Davis
Comment Utility
Awesome!  I did exactly as the guide said and and nothing more and it works PERFECTLY.  I also took out my explicit 101 to 100 allow in the in-zone config.  Here's what I ran:

config t
interface Virtual-Template1
 ip unnumbered Loopback0
 zone-member security in-zone
!
exit
!
webvpn context TFVPN
 virtual-template 1

Open in new window


All done!  Thank you!
0
 
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Author Closing Comment

by:Robert Davis
Comment Utility
Config flagged as answer
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