Cisco Firewall :: Securely Access Exchange Server 2007 Through ASA 5510?

Dec 27, 2011

Is there any way to access a MS Exchange Server 2007 on Windows server 2008 through an ASA 5510 running 8.4 with a full MS Outlook client (not using OWA - web browser)?  OWA is currently working fine but I was wondering if access via the full Outlook client is possible and more importantly...is it opening up too many ports on my 5510? 

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Cisco Security :: Securely Access Exchange Server 2007 Through ASA 5510 Using Outlook

Dec 26, 2011

Is there any way to access a MS Exchange Server 2007 on Windows server 2008 through an ASA 5510 running 8.4 with a full MS Outlook client (not using OWA - web browser)?  OWA is currently working fine but I was wondering if access via the full Outlook client is possible and more importantly...is it opening up too many ports on my 5510? 

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Cisco Firewall :: ASA 5510 With 8.0.2 - Exchange 2007 Outlook Anywhere / OWA Users

Aug 15, 2011

We have a ASA 5510 which was running 8.0.2, we recently upgraded it to 8.2.5 and since the upgrade remote users for exchange 2007 are not able to download any large email attachments(over or close to 1MB). This is only happening to Outlook anywhere users or OWA users who are connecting to the exchange server using https(443) externally. If the same users connects internally they do not face any issue. When i check the logs on ASA i am gettings lots of RESET-O and RESET-I entries. Looks like the connection between the client and the server gets reset.

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Cisco Firewall :: Microsoft Exchange With NLB And PAT On Asa 5510

Nov 7, 2012

i have exchange with NLB cluster.
 
i want to PAT the cluster ip to access email from outside. i know i can add the static arp entry for multicast cluster ip.
 
my question is i can add static nat command to that same cluster ip for port 25 and 443 like normal way like we do for normal PAT?

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Cisco Firewall :: Can't Send Or Receive Email From Exchange Behind ASA 5510 With CSC

Jan 17, 2012

We are upgrading from a Pix 515e to a ASA 5510 with CSC SSM.  We cannot send outbound email or receive any email from the outside world. I have placed a call with Cisco Support with no luck. [code]

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Cisco Firewall :: ASA 5510 Barracuda Exchange Emails Deferred

Nov 29, 2011

Our ASA 5510 has been in place for nearly two years, we never have any issue what so ever with it. All along the ASA has been using the default policy. Lately, we beeen getting email deferred in our Barracuda Spam firewall. Google quickly reveals that ESMTP does not play nice with Barracuda witch i disabled eventhough we haven't had any issue with it before. However, the issue remains, we still getting email deferred in the barracuda.
 
While doing more troubleshooting on the ASA, I constated when issue the command show local-host + IP of the Barracuda, there is an IP address in outside of the interface that can get up to 96 UDP port 53 connections with the Barracuda, this connection never get lower than 20! However, when checking the default setup for the Barracuda, i have the values below:
 
Incoming SMTP Timeout: 20
Message per SMTP Session : 8
Maximum SMTP Error SMTP Session: 2
Maximum Connection per Client 30m:40
 
My question is if that ASA show up to 96 DNS session with an outside host to my barracuda, won't that push the barracuda to play email deferred timeout ? Should I change the barracuda default setting? Or should i change the connections limits for the Barracuda in the ASA?

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Cisco Firewall :: 5510 Exchange Active Sync Stops Working

May 8, 2012

I know that I've run into this before but I can't remember the fix.  I have a 5510.  The 3 interfaces involved are INSIDE, OUTSIDE, and GUEST. Corporate users are allowed to put their iPhones on the Guest network, but the problem is that their Exchange ActiveSync stops working.  It is tied to the external DNS name of the OWA server (we'll say webmail.abc.com).  So the users are funneled out one public IP on the OUTSIDE interface and are trying to communicate with the outside of the OWA server, which is NATed to another public IP on the same outside interface.  What do I need to do on the ASA to allow users on the guest network (behind the GUEST interface) to access the mail server using its public IP (behind the INSIDE interface)

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Cisco Firewall :: ASA5510 / Accessing Exchange Server From DMZ?

Aug 16, 2011

We have a ASA5510 with a webserver in the DMZ network 10.2.2.0/24. We now want this web server to be able to access the Exchange server in the Inside network 10.1.1.0/24. I researched this and it seemed straight forward according the the Cisco document below:

[URL] 
 
I'm looking to do this with smtp so I added these lines to the config:
 
static (inside,DMZ) 10.2.2.30 10.1.1.11 netmask 255.255.255.255
access-list dmz extended permit tcp host 10.2.2.2 host 10.2.2.30 eq smtp
 
The configuration line:access-group DMZ in interface DMZ Already existed in the configuration so didn't need to be re-entered.

ASA Version 8.0(4)
!
hostname xxxx
domain-name xxxx.com
enable password xxxxxxxxxxxx encrypted
passwd xxxxxxxxxxxxxx encrypted
names

[code]....

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Cisco Firewall :: ASA 5505 - HTTPS Traffic Through DMZ Interface To Internal Exchange Server?

Apr 23, 2012

I have an ASA 5505 with the base license,When I setup the DMZ interface I had to add the deny access to the inside VLAN.  The DMZ works fine with WiFi on it, but user's iPhones can't get email unless they turn WiFi off.Is there a simple way to allow HTTPS traffic through the DMZ interface to our internal Exchange server which is NAT'd on the 5505's external IP?

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Cisco Firewall :: ASA 5510 - Cannot Access Web Server

Mar 23, 2013

I bought ASA 5510 about a week ago, very basic configuration and my priority was and still to get access list inbound the outside “Security Level 0 “so I can access my web server from the cloud but unfortunately I could not make it work (((TCP access denied by ACL from 92.40.X.X/52511 to outside:81.108.X.X/80))). ••à>> 92.40.X.X is a pc from the cloud that I used to access my web server and the 81.108.X.X is my public ip address My recent Conf is as follow:

Nat Section:
==================================================================================
Dynamic:
nat (inside,outside) source dynamic any interface <<<To have the PCs that inside the Network to have access to Internet>>>>

[Code].....

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Cisco Firewall :: ASA 5510 - Can't Access Server On Different Subnet

Sep 7, 2011

First off, let me preface this by saying that I'm a novice when it comes to firewalls and more specifically, the ASA.  I do however, have an above average understanding of switches/routers.
 
We have an ASA 5510 running 8.3 and recently I've decided to clean up the last admin's mess.  All hosts and servers are on the same subnet, multiple subnets on the same VLAN... and a slew of other problems.  Anyway, I recently placed the IT department on another subnet to test some things out before I migrated other departments to different networks.  Everything seems to be working as it should be with the exception of one of our servers.  The IT subnet is 192.168.150.0/24 and the problem server is on the 192.168.10.xxx network.  I'm guessing the issue lies somewhere in the fact this server does have a static NAT and is accessible from the public.  Let me give you an overview of what our network looks like:
 
ISP ---->ASA----->3750----->2960
 
My workstation is directly plugged into the 3750 switch, and the server is plugged into the 2960.  I'm able to ping this server by both IP and hostname.  However, I cannot access port 80 by IP or hostname.  The users that are on the 192.168.10 and 192.168.11 (sadly both of those are on the same VLAN) network are able to access this server without a problem.  Thinking logically, I thought I would send a packet from my workstation, it would head to the layer 3 switch's VLAN interface corresponding to my subnet, realize the .10 network is directly connected and then forward the packet straight to the server.  However, it doesn't seem to be working that way.  It look like it's being routed to the ASA then being dropped.  I guess there's an access rule or firewall rule preventing me from getting to the server.  Is there a specific part of my config you will need to see...

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Cisco Firewall :: ASA 5510 - Enable External Access To Server On DMZ

Apr 5, 2011

i'' ve one appliance ASA 5510, v8.X and asdm 6X here u have my configuration :
 
interface Ethernet0/0 description Link To WAN nameif outside security-level 0 ip address 212.96.23.186 255.255.255.252!interface Ethernet0/1 description Link to LAN(forefront) nameif inside security-level 100 ip address 10.20.80.1 255.255.255.252!interface Ethernet0/2 description Link to CoreSW (DMZ) nameif DMZ security-level 50 ip address 10.70.70.254 255.255.255.0
  
i have on server ssh (10.70.70.10) on my DMZ .
 
I wan to enable my external user, i mean outside user to be able to access to this server which is in my DMZ for this port ( ssh)

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Cisco Firewall :: 5510 - How To Allow Access From LAN To Server Using External FQDN

Feb 20, 2012

I may have phrased the topic not too clearly, but I have an external domain name of mail.company.com , I want my users INSIDE the company be able to also get to url..., currently they cannot (nothing loads, looks to me as if firewall simply drops it) and I'm drawing a blank on how to get this done. Externally this works fine so if you're outside the company you can load up OWA just fine since my NAT rule translates the external IP to internal IP, but something is blocking this from the inside.
 
I have an ASA 5510. If you can just sent me on the right path with theory I'll figure it out on my own, I don't need exact steps, but I must be thinking of this wrong as I'm not getting anywhere.

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Outlook 2007 Will Not Connect To Imap Server Using Wifi?

Sep 17, 2012

I am reading my gmail through Outlook 2007, using imap. When my computer is connected to the router by cable, everything works fine. When I try to connect wireless to the same router, it wont work. I can send e-mails, but outlook will not download new mail og syncronize with the server.

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Cisco Firewall :: 3750 / ASA 5510 - Allow Access To Server On Inside Interface From DMZ?

Feb 28, 2013

My internal network consists of Catalyst 3750 switches segmented into different VLANs.  There is a default route on the layer 3 Catalyst switch sending all unknown traffice to the inside Internet of the ASA 5510.  However, I'd like to have a separate VLAN for wifi guest access and send all of that traffic through one of the DMZ interfaces on the ASA 5510.  I don't think you can have separate default routes based on VLANs on the 3750 switches so my only option is to make the ip address of the DMZ port the default gateway for all hosts on the wifi guest VLAN. 
 
The problem I have is that I have a couple servers behind the inside interface that have services available to the public Internet via a NAT address on the outside interface.  I want the guests on the wifi VLAN to have the ability to access the servers on the inside interface using the public address as well, but have not been able to come up with a solution yet. 
 
Here is my config that pertains to this setup:
 
interface Ethernet0/0description Outside Interfacenameif Outsidesecurity-level 0ip address 76.47.10.x 255.255.255.224 rip send version 1rip receive version 1!interface Ethernet0/1description Inside Interfacenameif Insidesecurity-level 100ip address 192.168.17.1 255.255.255.0 rip send version 1rip receive version 1!interface Ethernet0/3description Wifi Guest Accessnameif DMZ2security-level 50ip address 192.168.60.1 255.255.255.0
 
global (Outside) 1 interface
nat (Inside) 0 access-list nonat
nat (Inside) 1 0.0.0.0 0.0.0.0
nat (DMZ2) 1 0.0.0.0 0.0.0.0
static (Inside,Outside) 76.47.10.x 192.168.17.88 netmask 255.255.255.255
 
I've tried the following commands below but no dice. 

same-security-traffic permit intra-interface
static (inside, inside) 76.47.10.x 192.168.17.88 netmask 255.255.255.255

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Cisco Firewall :: ASA 5510 / Outbound Internet Access Not Allowed When Syslog Server Is Rebooted

Jun 27, 2011

I have recently setup Splunk to receive my syslog messages from my ASA 5510.  In the past I used kiwi without observing this issue, but I needed more features than kiwi had available.  Anyway, anytime I stop the splunk service my asa does not allow any outbound connections to be established. 

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Cisco Firewall :: 5060 Microsoft Office Communicator 2007 TCP UDP Ports Remote Users

Mar 11, 2012

We have a Cisco secure VPN site to site tunnel between the 2 locations.Which ports are need to open on tunnel so that users can successfully use OCS over the site to site VPN tunnel.All the users are havning the main brach AD account.Using Wireshark captured the packets, found only port TCP 5060, after allowing this port over tunnel I can see the authentication window.The user authentication fails. Already port 3389, 80, 443 are allowed.The main requirement is to only have the Chat, Group Chat and file transfer. Not require AV traffic.OCS is using TCP. no TLS is configured.

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Cisco Firewall :: ASA 5510 / Add A Mail Server In The LAN And A Webmail Using Port 3000 On The Server?

Jul 24, 2011

I'am using ASA 5510 and I try to understand how PAT is working.I want to add a Mail Server in the LAN and a webmail using port 3000 on the server. ( webmail must be reachable from the WAN)This is my Configuration :actually LAN users access internet using NAT with one global IP ( 194.x.x.69) which is the ASA WAN interface.

WAN ----- ISP Router ----------     FW     ---------- LAN -------- Mail Server + Webmail
|             (25) | (3000)
194.x.x.69    192.168.1.254                     192.168.1.6
 
I need to forward port 3000 and port 25 from outside to inside.For example, from the WAN : [URL] must be redirect toward 192.168.1.6:3000 . What is the Correct Configuration ? And what about the Inside/Outside Traffic,Is there any configuration to add ?

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DNS For Exchange Server?

Apr 13, 2013

I am new to Exchange Server 2007 . I want to know that in order to implement Exchange Server do I need to register Domain name like [url]... ? OR A FQDN of Active Directory can work.Is it compulsory to register domain ?

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Trace Port Used By Exchange Server?

Mar 3, 2012

We use microsoft exchange for outlook. I want to know which ports are being used by our exchange server to receive and send emails. Is it possible to check that?

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Add Static Route For New Exchange Server?

Sep 11, 2012

Add static route for new exchange server?

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Protocols / Routing :: Two Domains In One Exchange Server?

Aug 28, 2012

Currently, my company runs a DC and exchange server in the building. It is also hosting our website with IIS7. All AD users currently have @company1.com.au email addresses.We have just started an off shoot company and would like to setup emails in exchange so that we can automatically assign and manage emails on the same exchange server. so that each user hasWhat is the best way to do this?At the moment, company2.com - company is hosted outside with someone else. Is there a way that he can direct the mail to us so that he hosts the website but we host the email server?

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Cisco :: Why ESMTP Corrupts Emails So Badly From Exchange Server

Mar 18, 2011

since upgrading to 8.4(1) on our ASA 5520 I've had nothing but issues with our email server not being able to send out emails (timeouts,corruption, etc) and tried everything and then it dawned on me to turn off ESMTP inspection on the ASA's.Since I've down that our Exchange server SMTP works perfectly again.Why is it that ESMTP corrupts emails so badly from exchange server? (ours is a 2010 sp1)does anyone actually use ESMTP inspection at all?

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Cisco Routers :: Exchange Server - Port Forwarding On 2811?

Sep 18, 2011

Basically the problem that I have is that I have a new Exchange server sitting on 192.168.12.2 IP address and on the router I have this NAT enabled
 
ip nat inside source static tcp 192.168.12.2 110 212.115.5.5 110 extendable ip nat inside source static tcp 192.168.12.2 25 212.115.5.5 25 extendable
 
The Exchange can receieve emails but it will not send them. It cannot make connection to any of the smart hosts on port 25 or can't even send mail using DNS. When I run telnet my.smarthost.com 25 it will not connect but if I run that from the router then it connects fine.

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Cisco WAN :: Inbound SMTP To Our Exchange Server Through 1841 Rejected

Jan 10, 2011

I am deploying a Cisco 1841 in place of our basic DSL router.I have an ADSL WIC and FA0/0 connected to our LAN.LAN IP ADDRESS range is 192.168.1. 0/ 24 I have dynamic and static NAT configured.  At this point although I have ACL's configured I have NOT implemented them as yet for the following reason.  I am unable to recieve inbound SMTP traffic - now  know my MX records are correct as this all owrks happily on our basic DSL router.  I can send external emails no problem and all internal email works fine. [code] I am in the process of defaulting the router and programming the barbones to get the link working and see if inbound SMTP works then start building the blocks again.

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Cisco Application :: Importing SSL Certificate From MS Exchange Server To ACE 4710?

Nov 16, 2011

My customer has SSL certificate already installed on microsoft exchnage 2010 servers and now wanted to import that certificate to cisco ACE4710.
 
How to trace the exact procedure to import the SSL Cert to ACE from microsoft exchange server and how about the KEY, from where I should get the KEY to cross verify for SSL Cert?

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Cisco Wireless :: RV220W / Unable To Connect To Exchange Server With IPhone

Aug 21, 2011

I just recently installed a RV220W at my office and (almost) everything works fine. I have noticed that when my iPhone is connected to the RV220 wi-fi network, I get the message "The connection to the server failed" when checking my email. If I disable the wireless on my iPhone, it connects up to the exchange server perfectly fine so it must be a setting with the wireless somewhere but I cannot find it anywhere.....

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D-Link DIR-615 :: Laptop Setup To Connect To Exchange Server For Email

Apr 12, 2009

I'm hosting my email on an Exchange Server 2003 box and have my laptop (Vista Ultimate 32 bit) setup to connect to the exchange server for my email. This works fine through a LinkSys RV042 in one location and a LinkSys WRT54GC in another, but fails through the DIR-615 B2 (2.24 firmware) at home. I'm guessing it's blocking something needed for the MAPI connection.

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Linksys Wireless Router :: Connect Exchange Server Via Wifi And Ea6500?

Dec 30, 2012

Since I have installed my new router, a Linksys EA6500, I have many problems to connect to my Exchange Server, which is located in my house, via Wifi. I tried to synchronize my Iphone and my Samsung tablet but it won't work. Most of the times I get the message that the Exchange server cannot be connected. When I turn off my Wifi en connect via my mobile provider I have no problems. When I am on a third party wifi I also can connect my server. Seems my own wifi causes lots of problems.

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Cisco Firewall :: ASA 5510 - Accessing Web Server From Another One Within DMZ?

Nov 19, 2012

Is this possible and if so what commands do i need to configure on my ASA 5510 for it to work.I have two web server within my DMZ and i want to access the outside url of on on the web server from the other. Currently i can access the internet from both webserver server but not the url form either webservers.
 
E.g. config
 
webserver 1       https://xxxxxx.xxxxxxx.com ---> public ip---> dmz ip
webserver 2       https://xxxxxx.xxxxxxx.com ---> public ip---> dmz ip

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Cisco Firewall :: DNS Server Group On ASA 5510

Apr 5, 2011

I can not have "dns server-group" on my asa 5510, could you tell me how to get this command in my ASA 5510.

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Cisco Firewall :: SSH Key Exchange DH Group 14?

May 29, 2013

I am trying to issue command "ssh key-exchange group dhgroup14" on several of my ASA firewalls.  The key-exchange command is failing on 3 of 4 ASA firewalls.  According to Cisco documentation, this command was introducted in 8.4.  My ASA's are running version 8.6.1.10, 9.1.1.8, 9.1.1.10 and 9.1.2.  The command is available only with 9.1.2.
 
Example from one my ASA.
 
lbjinetfw# show version | in Version
Cisco Adaptive Security Appliance Software Version 8.6(1)10
Device Manager Version 7.1(2)
Baseboard Management Controller (revision 0x1) Firmware Version: 2.4
lbjinetfw# config t
lbjinetfw(config)# ssh

[code]....

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Cisco VPN :: Remote Access With ASA 5510 Using DHCP Server?

Nov 28, 2011

why I am not able to receive an IP address on remote access VPN connection while I can get an IP address on local DHCP pool?I am trying to setup remote access VPN with ASA 5510. It works with local dhcp pool but doesn't seem to work when I tried using an existing DHCP server. It is being tested in an internal network as follows:

!
ASA Version 8.2(5)
!
interface Ethernet0/1
nameif inside
security-level 100
ip address 10.6.0.12 255.255.254.0

[code]....

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