Cisco Firewall :: Use Dual ISP's With ASA5505?
Oct 1, 2010
for the purpose of a redundency, incase the primary ISP goes down the backup kicks in.Can this be done with the basic license (max 3 vlans) or you need to have the security plus license. (20 vlans) Currently not using the 3rd vlan (dmz)
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Oct 30, 2012
I have setup an ASA5505 running 8.2 with dual ISP's
Primary link is the current live static route out and the backup picks up if the primary fails. That all works great However I have an issue with inbound NAT rules
I have configured an inbound static on the primary which works great
static (inside,primary) *.*.*.* 10.1.1.1 netmask 255.255.255.255 access-list outside_access_in line 2 extended permit tcp any host *.*.*.* eq 3389 (hitcnt=4)
Question? With the primary link active and the default route pointing out through the primary, am I able to configure an inbound NAT to the same inside host 10.1.1.1
on the backup link?
If the primary fails users will need to be able to connect inbound to this service
When I try to set it up I got this error ERROR: Static PAT using the interface requires the use of the 'interface' keyword instead of the interface IP address
So I tried that and got this error WARNING: All traffic destined to the IP address of the backup interface is being redirected. WARNING: Users will not be able to access any service enabled on the backup interface.
So what is the best practice for configuring inbound NAT for a dual ISP configured ASA
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Jun 3, 2012
I have a site with an ASA5505 and 2 isp connections but the catch is the 2 isp's are giving me a dynamic IP so I am unable to use this [URL]
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Nov 17, 2011
I have an ASA 5505 with the Security License running 8.4 and 6.4.5 software, I have a fully working VPN solution on there using a ISP IP - works fine. My boss wants to split the lines/bandwidth to another ISP we have coming into the office. So what I want to acheieve if possible is this Say my current isp is 5.5.5.5, my internal network is 192.168.2.x and my other ISP is 6.6.6.6 - is it possible to use the ASA to accept VPN clients from both ISP's and use the internal network?
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Sep 18, 2011
I have problem with dual ISP + IPSEC on my cisco ASA5505 sec plus licence.Routing is working correct (connect to Internet from siteA is working trought 1st also second ISP) but IPSEC is working just trought the first ISP! It seemt that phase 1 and 2 of IPSEC is correct but packets are just encrypting but not decrypting.
I'm trying ping from siteA (PC - 10.4.1.66) to siteB (PC - 10.3.128.50)
config site A:
##########################################################################
ASA5505 Version 8.2(1)
interface Vlan1
nameif inside
security-level 100
ip address 10.4.1.65 255.255.255.248
!
interface Vlan2
[code]....
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Jun 18, 2008
I have two ISP's and I want to channel specific traffic out of an interface based on traffic type. Will the ASA 5505 security bundle allow me to route specific traffic out through a specific interface?
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Jul 1, 2012
I've been searching the net for days now trying to configure the ASA5505 for dual DHCP ISP use. All guides available assume you have one static.
After realizing that it required a Security Plus license to even configure 3 VLANs.
I can choose a backup interface in ASDM. It even says dual ISP enabled. Why cant there be a guide or simple configuration example or am I the only one looking for this kind of solution?
Customer has two ADSL internet connections and want to switch between them if they fail. No load balancing required.
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Jun 7, 2011
I'm trying to set up a S2S VPN between two ASA5505 SP units running ASA Version 8.2(1). I've ordered additional ADSL2 lines to handle this traffic and I'm having troubles with the configuration for the additional PPPoE connection. Here is are extracts from my current config; First the interface vlans
!
interface Vlan1
nameif inside
security-level 100
ip address 192.168.1.1 255.255.255.0
[code]....
The result being that I can ping the OUTSIDE interface, but get no reply from the VPN interface. I've checked ADSL lines, they are up. The two PPPoE sessions are logged in and active. I can even see the ICMP packets hit the VPN interface, but there is no reply.
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Feb 24, 2011
I have a normal setup of ASA5505 (without security license) connected behind an internet router. From the ASA5505 console I can ping the Internet. However, users behind the Firewall on the internal LAN, cannot ping the Internet even though NATing is configured. The users can ping the Inside interface of the Firewall so there is no internal reachability problem. In addition, I noticed that the NAT inside access list is not having any hit counts at all when users are trying to reach the internet.
When i replace the ASA5505 with a router with NAT overload configuration on it, the setup works normally and users are able to browse the internet.
The ASA5505 configuration is shown below.
hostname Firewall
interface Ethernet0/0
description Connected To Internet Router
switchport access vlan 10
[Code].....
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May 17, 2011
i have asa 5505 with the asdm v5.2 (4), and the asa v7.2(4). This platform has a base license. if i upgrade adsm and asa on v6.2(1) and v8.2(2) if I lose my license and that you need to activate them? i configured site to site vpn (this firewall and the another) that i lose my configuration if i upgrade my firewall.
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Jul 14, 2011
I've recently upgraded my old firewall from a PIX to an ASA5505 and have been trying to match up the configuration settings to no avail. I have is that I can't ping the new firewall on it's inside interface, despite having "icmp permit any inside" in the running config. Secondly, the server I have on there ("Sar") can't connect out to the internet.I've included the ASA's running config incase anybody can see if something stands out. I have a feeling it's either not letting anything onto the inside interface, or there is no nat going on. Lastly (and possibly relevant), the firewall is actually going at the end of a vlan, which is different to the firewall's inside vlan number. I don't know if this is actually the problem because the server can't connect out even if connected directly into the firewall.
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Jan 9, 2013
Internet ISP -> Juniper SRX 210 Ge-0/0/0
Juniper fe0/0/2 -> Cisco ASA 5505
Cisco ASA 5505 - >Inernal LAN switch.
1. Internet is connected to Juniper Ge0/0/0 via /30 IP.
2. Juniper fe0/0/2 port is configured as inet port and configured the Internal public LAN pool provided by the ISP. And this port is directly connected to Cisco ASA 5505 E0/0. Its a /28 pool IP address. This interface is configured as outside and security level set to 0.
From Juniper SRX, am able to ping public Internet IPs (8.8.8.8).
Issue:
1. From ASA am unable to ping public ip configured on Juniper G0/0/0 port.(/30)
2. From ASA no other Public internet IP is pinging.
Troubleshooting Done so far.
1, Configured icmp inspection on ASA.
2. Used the packet tracer in ASA, it shows the packet is flowing outside without a drop.
3. Allowed all services in untrust zone in bound traffic in Juniper SRX.
4. Viewed the logs when I was trying the ping 8.8.8.8 in ASA. It says "Tear down ICMP connection for faddrr **** gaddr **
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Apr 1, 2013
I'm trying to troubleshoot an ASA5505.
The original goal was to block "Mumble/Murmur" (a voip app) traffic, which runs on TCP/UDP 64738, both inbound and outbound, except to a certain host (63.223.117.170).
However, when nothing I tried seemed to make a difference, just to troubleshoot, I decided to try blocking all inbound traffic. I first disconnected ethernet port 0/0 to ensure that it was cabled correctly and the outside interface went down when I did. That worked as expected, so I confirmed I had the right interface and it was cabled correctly.
I then applied a "any any deny ip" rule as the first element in the outside interface access_list, as you can see below. However, it appears to have had no real effect and the hit count is very low (it should be astronomical).
show ver
Cisco Adaptive Security Appliance Software Version 9.0(2)
Device Manager Version 7.1(2)
Compiled on Thu 21-Feb-13 13:10 by builders
System image file is "disk0:/asa902-k8.bin"
[Code].....
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Nov 29, 2011
Is it possible to use IP "aliases" on an ASA5505 to use as static NAT public IPs to private IPs? For example, I have int e0/0 connected to my ISP using a /30 subnet and I have my private LAN connected to e0/1 with a /24 subnet. At the moment I can use the one usable IP from the /30 to NAT to the private LAN. The ISP is also routing a /28 subnet to the one public IP of the ASA. I would like to use some of the /28 IPs for NAT also. Can it be as easy as just adding the NAT commands? I figure I would have to add that subnet to the ASA somehow, no? In other devices (including the SA520) they use a concept called IP aliases whereby you define what additional IPs the device can use in its NAT config. Does the ASA support aliases? Maybe I have to do something with VLANs?
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Jun 15, 2011
it is possible use 1 or 2 Gb memory with ASA 5505 or only 512 Mb ?
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Jun 16, 2011
I have 1 network that I'm trying to make secure, and it needs to access 2 seperate networks. I tried using an ASA5505 that I had on the shelf to accomplish this but discovered that I had the basic license and that was prohibiting me from getting my connection to my 3rd network. I scrapped that idea and grabbed an old pix 501 off the shelf to bring my connectivity to my 3rd network online since the 3rd network is only passing ip traffic to a small group of servers on the outside I figure the 501 should be just fine.
So, here's the problem I am running into:My internal network is 10.10.16.0/16, I have a new domain controller with DHCP on it handing out addresses in the 10.10.16.0/24 range.External Network 1 is 192.168.16.0/24. The services I need from that network are primarily in 192.168.0.0 range, however there is a comcast router 75.123.123.123 (Changed of course) that provides high speed internet I need for my www traffic.External Network 2 is 10.1.1.0/16 I have about 4 servers I need to access on this network and that's it. This network has it's own domain and DHCP controller and I've been given a range of ip's to use on this network of 10.1.3.180-10.1.3.189 My switch is just a plane jane 3com switch with minimal management so I am attempting to use my ASA5505 to handle my layer 3 routing.
So here's my issue:ASA5505 (IN:10.10.16.1, OUT: 192.168.16.6): Passes traffic to External Network 1 and to the comcast router, no problem. All my computers on my 10.10.16.0/16 network have access to everything on 192.168.0.0/24 as well as getting full name resolution and www traffic across the comcast router. Can NOT access 10.1.1.0/16 no matter what. From inside the ASA or from on the inside LAN ports. It CAN ping the PIX 501 PIX 501 (IN:10.10.16.3, OUT: 10.1.3.180) Can ping EVERYTHING. Can ping 192.168.0.0/24, can ping 10.10.16.0/16 and can ping 10.1.1.0/16. Set to globally assign the other IP's in my range as addresses for outgoing traffic.Workstations (IN: 10.10.16.XXX DHCP, using 10.10.16.1 as gateway) Can only access everything on External Network 1. ZERO access to External Network 2. ATM I have both INSIDE and OUTSIDE ACL's wide open for both firewalls just to get connectivity going. I will be tightening it up after it is operational.Attached find a log file (Sensetive data removed of course) that contains the sh run and sh ver for both the ASA5505 and the PIX 501.
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Mar 14, 2013
I just got an ASA 5505 with Cisco Adaptive Security Appliance Software Version 8.0(4) alredy loaded on it. Should I update/upgrade it to the newest IOS release, or is the 8.0(4) good and stable?
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May 3, 2012
I'd like to setup a DMZ network with the ASA5505. Do I need the "Security Plus Bundle"?
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Apr 25, 2012
I've been trying to get my WRVS4400N connected to my ASA5505 on the internet through a Cox connection, but it isn't working. I cannot get the ASA to be the DHCP server for the wireless router. I've configured the wireless router as a gateway and pointed the DHCP server to the ASA but no addresses are being passed through to the wireless router. I've included a copy of my config.
ciscoasa# sh run
: Saved
:
ASA Version 8.4(2)
[Code].....
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Jul 24, 2012
We are trying to utilize a 5 ip block of addresses provided by our ISP. What we have assigned from them is like this: 10.10.10.46 - 10.10.10.50 is our ip range. 10.10.10.45 is the gateway. Subnet is 255.255.255.248. If we assign 10.10.10.46 to the outside interface how do we accept inbound traffic from the other addresses?
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Sep 4, 2012
I have Vlan 100 (inside) and Vlan 65 (Outside)I'm trying to configure RDP and ping traffic from Vlan 100 to Vlan 65 One way.If I connect 2 PCs on E0/0 and E0/1 they can happily ping the their own VLAN ip add 192.168.100.3 and 172.16.65.1I've copied my config,
ASA Version 8.4(4)1
!
names
!
object-group network A_Network
network-object 172.16.65.0 255.255.255.0
[code]....
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Dec 20, 2011
I have a asa 5505 Sec plus with 3vlan, inside, outside and dmz.
On the outside i have 5 ip's for my use, and in the dmz i have a webserver that need to communicate with one sql server on the inside.
The "sql" also needs to be accessible from outside and thus has a static nat with a dynamic nat so it replies from same ip as on nat ie 72.72.72.5 webserver is natted with 72.72.72.6
sql inside ip is 192.168.1.2, gw 192.168.1.1
webserver ip is 192.168.2.100 gw 192.168.2.1
sec lvl on inside is 100 and on dmz 50
with a dynamic policy running inside-net/24 to dmz-network/24 translagt to dmz 192.168.2.2 i can get it to ping 1 way from inside to dmz, but not the other way around...
All i need is to open 1 port ie 6677 both ways for this communication to work.
I'm not very familiar with the CLI and do most stuf in GUI (know i should learn CLI, but time doesnt let me)...
on access rules i have just added everything from any to any using , ip, icmp, tcp and udp just to be sure... :-)
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Feb 29, 2012
I want to make it so if a user tries to use a different DNS server the request will be redirected to the one they should be using.I thought this might work but the ASA doesn't do PB routing
ip access-list extended transparent_dns
permit udp any any eq 53
route-map redirect_dns permit 10
match ip address transparent_dns
set ip next-hop ip.of.your.server
route-map redirect_dns permit 20
[code]....
The DNS server is windows 2003?Would policy based NAT or WCCP work for this? If so how would I go about it?
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Nov 22, 2011
I would like to use an ASA5505 as a simple LAN-to-LAN ethernet router. My plan is to configure two interfaces with the same security level and then use the command that allows interfaces with the same security level to communicate with each other. I can get this to work without having to setup and ACLs or NAT stuff.
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Apr 18, 2012
setting up ASA to allow passive FTP connection! I can get the FTP client to connect but it does not pull the directories. I have opened 21 and range of 55536-55566. I had some trouble gettting the range opened and saved. Normally with other small business routers (GUI) I make sure those ports are forwarded and ftp works.
Is the ftp inspection killing connection or is it my config?
ASA Version 8.4(2)
!
hostname ciscoasa
enable password vRLm0eRL2O14iLM6 encrypted
passwd 2KFQnbNIdI.2KYOU encrypted
[Code].....
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Jan 31, 2012
Do some have some realistic performance numbers for a ASA 5505 on a mixed setup with local internet breakout and site to site vpn ( and don't tell me 150 mbps 3des throughput on a 100 mbps ethernet) - what can be expected in a live environment where we f.ex feed it with a 100 mbps internet connection - with a site to site vpn with f.ex 20 office workers running office on a remote terminalserver and mixed local internet breakout.
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Nov 14, 2012
customer's WAN solution, instead of buying routers, purchasing department bought ASA's (don't even get me started!). So I have 5 ASA 5505's for the branch offices and one 5510 for the Head Office. I am trying to get them to behave like routers and pass the traffic across. I set up a lab with a 5505 and the 5510 using an ethernet cable for both Outside interfaces since the WAN links are going to be MetroEthernet Layer 2 anyway.
I tried static routes, dynamic routing, I followed examples from other persons who did it and it doesn't work. I attached the configs here to show I have the default routes, specific static routes pointing the traffic out, any any rules configured as well. I cannot ping from the internal lan of the 5505 to the internal lan of the 5510.
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Dec 13, 2012
i am trying to configure Dual NAT (source and destination) with multiple subnets in the source, i am trying to figure out how to accomplish this with 8.2 ASA ,
Original source
172.21.113.0/24
10.233.0.0/24
[Code].....
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Jan 25, 2013
I used the GUI configuration tool for this ASA 5505. When I install it no traffic passes. I am wondering to verify my config. I have masked the usernames for VPN with xxxxxx and yyyyyy. [code]
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Jul 7, 2012
I have ASA 5505 running 7.2.4, I want to prevent users accessing some web sites such as facebook , youtube and hotmail etc.
Which ASA 5505 IOS version should I use to block web access?
I don't want to isntall a dedicated filtering server ( websense etc) , I just want to block web sites statically on ASA 5505 via ASDM as I only have few sites to block.
know if ASA 5505 can do URL filtering, and what IOS is required ?
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Apr 20, 2012
I have 10 user license for Cisco ASA, i have to use this ASA for client connectivity. Can i do NAT of more than 10 users with this license? What i understand is NO.
But as per Below explaination looks like, i can if i am not doing default routing? Actually i just need to add a specific Route towards client DMZ interface on my ASA, no default route, so can i use more than 10 concurrent sessions with this license?
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Mar 4, 2012
I have a cisco asa 5505 firewall, and I have a normal home ADSL broadband router, the router currently connects via wireless to my pc.What I would like to do is basically connect the asa to my pc, then my router to my firewall.what the best thing to do here, run the aa in transparent mode, OR routed mode and do NAT on the firewall to the private ip address range of my router.
OR, would it be possible to get the outside interface of my asa to get DHCP from my broadband router so it will use a 192.168.1.x address on the outside, and then turn NAT off?
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Sep 12, 2011
Users cannot download some files from a FTP in a software over VPN Explanation users work with a program and inside the program they download claim (the software goes to the FTP and download the file)
But the program returns an error 3018 in FTPGET. If the user goes to the old PPTP VPN it works like a charm so the problem is the Cisco VPN.
I cannot post my complete config but we use the filter vpn value to associate a special access-list to a user.
The user that has this problem has this as an access-list.
access-list 201 extended ip permit 10.250.128.0 255.255.255.0 192.168.202.0 255.255.255.0
I've made some research and i've added this info
policy-map global_policy
class inspection_default
Inspection ftp
Still doesn't work.
I have to add that normally the internal network is 2.0 and not 202.0 but since we have user with 2.0 at home we had to do this.
So when a user sends a request to 202. the cisco fowards it to the Juniper inside the network and it translate it back to 2.0 Also that is the ONLY thing that doesn't work. The client can work all day on that program and it will work #1 exept when she does the claims
I am also been working on this VPN for 2-3 months without any problems.
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