Cisco Firewall :: ASA5505 - Inside Hosts Limit
Feb 18, 2012
The ASA5505 I am working with has this from the show version:
Licensed features for this platform:Maximum Physical Interfaces : 8VLANs : 3, DMZ Restricted Inside Hosts : 10Failover : Disabled VPN -DES : EnabledVPN-3DES-AES : Enabled VPN Peers : 10WebVPN Peers : 2Dual ISPs : Disabled VLAN Trunk Ports : 0
This platform has a Base license.
Does the Insides Hosts :10 line mean that only 10 devices can be connected to the firewall at one time? I would like to connect an AP to one of the PoE ports and have possibly more than 10 connected. Is this possible with this ASA5505?
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Aug 17, 2011
I want to upgrade "inside hosts" from 10 to unlimited on a ASA5505-BUN-K9, Do I have to buy Security Plus license ( L-ASA5505-SEC-PL =) ) before activating ASA5505-SW-10-UL ?
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Apr 25, 2011
I am using ASA 5505 firewall with base-license. I connected my firewall to one cisco 3750 switch where i created 5 vlans. I done NATing for all vlans and they able to get internet and working fine. They able to browse all internet sites like gmail and yahoo mail.
All internal users are configured to use Outlook for their webmail. Here the problem is with outlook they are unable to send and receive the mails.
If they directly connected their system using public ip( Directly from ISP) they able to send and receive mails from outlook.
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Jun 8, 2013
I am struggling to get successfull pings beween asa and inside hosts but couldn't succeed. Done packet tracer result is acl-drop
Here is the running config
Prem-ASA(config)# sh run
: Saved
:
[Code].....
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Nov 21, 2012
ASA is running 8.4.
Internal interface: 172.16.1.1
External interface: 172.16.2.1
Routing to 192.168.0.0 via internal host.I've got some static NATs, e.g:
object network obj-192.168.0.1
nat (inside,outside) static obj-172.16.2.1
object network obj-192.168.0.3
nat (inside,outside) static obj-172.16.2.2
I also want in internal NAT, but only for certain external hosts, so when they connect to any of the above, their source address is changed. I've attempted the following so an external host (172.16.2.254), has it's source changed to 172.16.1.100.
nat (outside,inside) source static obj-172.16.2.254 obj-172.16.1.100
But it's source remains unchanged.What am I missing?
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May 22, 2011
This is an issue I'm currently exploring with TAC, but I'd like a quick reality check. We have a pair of ASA 5510s in Active/Standby stateful failover mode. In some tests failing over from the active to the standby system breaks SSH connections from hosts on our Inside to hosts on our DMZs.
A specific example is our backup server on Inside which is connecting to our mail server in the DMZ2, and running ssh/rsync/scp for the backups. A running backup job fails with network timeout errors when I trigger the failover. Also, sometimes the mail server loses or hangs on its connection to our LDAP server in DMZ1, although sometimes this connection is fine (DMZ2 is more "inside" than DMZ1, and I assume the LDAP look ups are many short connections, vs the rsync backup being one long connection).
TAC has suggested that open SSH sesions will always fail when the ASAs failover. I believe this is true for management connections to the ASA, but I don't see why it should be the case for an SSH session through the ASA to a server in the DMZ. TAC has suggested that I open some connections to servers in the DMZ and test what happens, and I can do so this Wednesday morning during a maintenance window.But, in general, is this true? That is, given an SSH session from a workstation to a server, should a failover break it? If so, why?
The setup is:
MyWorkStation-INSIDE -> CoreSwitch (vlan 10) -> [ ASA-INSIDE - - (ASA-internal-connection) - - ASA-DMZ ] -> CoreSwitch (vlan 3) -> TargetServer
That is, all our inside VLANs are routed by our core L2/3 switch to a VLAN that connects to the Primary and Secondary ASA's INSIDE ports. There are also seperate VLANS on the core for the ASA's DMZ1 and DMZ2 connections, which go to both ASAs and to any servers in these zones.
The description of the ASA Stateful failover [URL]says: "The state information passed to the standby unit includes these:
· The NAT translation table
· The TCP connection states
· The UDP connection states
· The ARP table
· The Layer 2 bridge table (when it runs in the transparent firewall mode)
· The HTTP connection states (if HTTP replication is enabled)
· The ISAKMP and IPSec SA table
· The GTP PDP connection database
[code]....
I'm not quite sure what the ISAKMP and IPSec SA tables do, but shouldn't an SSH connection through the ASA be just a TCP connection? "For us, SSH from Inside to hosts in the DMZ survives failover," or, "Yah, failover breaks all SSH sessions."
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Dec 4, 2011
I have an ASA 5510 which i've configured for internet access.I can connect to the internet from the ASA box,I can ping public networks from the console of the ASA box,but cannot access public hosts from internal hosts connecting via the ASA box.Find my config below to know what i ahave omitted or committed.
[code]...
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Jun 22, 2011
I'm stuck at asa 5505 nat, port forwarding configuration Here is what i need:
host1: 192.168.1.1 service tcp/100 >>>>> public ip 1.1.1.1 service tcp/100
host2: 192.168.1.2 service tcp/200 >>>>> public ip 1.1.1.1 service tcp/200
host3: 192.168.1.3 service tcp/300 >>>>> public ip 1.1.1.1 service tcp/300
So people from remote just need to use 1.1.1.1 public ip to access all the ports on three different inside server.I can do this on my old ASA 5505 with 8.0(4). Looks like there're lots of change from 8.0 to 8.4.
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Feb 14, 2012
At the end of the day I simply need to upgrade the license on my ASA 5505 v7.2.4 (upgrade will come later as part of a larger project) to allow for >10 Inside Hosts. From what I've read there seems to be a 50 license upgrade out there. Can this be purchased directly? From whom? Will it only affect the Inside Hosts number and not affect any other licenses, configurations, etc. Just being overly cautious since this is way outside of my normal realm. Below is the current activation-key information....
Result of the command: "show activation-key"
Serial Number: xxxxxxxxxxxxxx
Running Activation Key: xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Licensed features for this platform:
Maximum Physical Interfaces : 8
VLANs : 3, DMZ Restricted
Inside Hosts : 10
Failover : Disabled
VPN-DES : Enabled
VPN-3DES-AES : Enabled
VPN Peers : 10
WebVPN Peers : 2
Dual ISPs : Disabled
VLAN Trunk Ports : 0
This platform has a Base license.
The flash activation key is the SAME as the running key.
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Jun 19, 2011
How can I get DMZ hosts to be able to access the Internet via the Outside interface of my ASA5505.I am using the DMZ to allow temp guest acces to the Internet.
Here is my configuration and it can be changed as needed.
User Access Verification
Password:Type '?' for a list of available commands.ciscoasa> enaPassword: *******ciscoasa# sho run: Saved:ASA Version 8.0(4)!
interface Vlan1nameif insidesecurity-level 100ip address 192.168.100.39 255.255.255.0!interface Vlan8no forward interface Vlan1nameif dmzsecurity-level 50ip address 172.31.10.1 255.255.255.0!interface Vlan11nameif outsidesecurity-level 0ip address 24.172.82.xxx 255.255.255.252!interface Ethernet0/0!interface Ethernet0/1switchport access vlan 11!interface Ethernet0/2!interface Ethernet0/3switchport access vlan 8!interface Ethernet0/4!interface Ethernet0/5!interface Ethernet0/6!interface Ethernet0/7!boot system disk0:/asa804-k8.binftp mode passivedns server-group DefaultDNSdomain-name asaobject-group protocol DM_INLINE_PROTOCOL_1protocol-object udpprotocol-object
[code]...
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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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May 8, 2013
I am very new to Cisco ASA and I am trying many days to implement the design below but still cannot get it done. The situation I am facing is
- a host (e.g. 192.168.5.10) under Inside interface can contact to outside without any problem.
- however a host outside (e.g. in VLAN1 or outside this network) cannot contact host under Inside interface. I am using PING test and always get Request Time Out. [code]
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May 15, 2012
Let me start by saying that I'm just starting to study for CCNA, so the ASA seems to be a bit above me yet. The ASA's we are using is for VPN to our corporate office and only allowing access to our Citrix environment, so no direct internet allowed. We have a person who works in the remote office who has need for a caption telephone that requires direct access to the internet. The phone only supports DHCP, and getting the ASA to do an ARP reservations is proving difficult. For now I wrote an access list to allow it's DHCP address out but it still isn't working. The access list I wrote is:
access-list 101 extended permit ip host xxx.xxx.xxx.124 any log
access-list 101 extended permit ip any any
access-group 101 out interface outside
When I do a show access-list I'm seeing that traffic is hitting the access list as the hit counter has increased. When I do a show conn I'm seeing one of the IP's that the phone should have access to, however the flags are: saA, so I'm assuming they are not getting a response. According to the manufacturer, only outbound connections are needed, no incoming ports required. All traffic is TCP.
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Sep 29, 2012
I just try to ping a internal Host but it want to go.
Laptop<===>ASA5505
Connected is the Laptop at Ethernet 0/2 Inside
My running-config is a clear config, only VLAN 1 has a IP and Ethernet 0/2 is up.
But If I try to ping to the Laptop I get the followed:
asa5505# ping 192.168.1.100
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.1.100, timeout is 2 seconds:
?????
Success rate is 0 percent (0/5)
asa5505#
From the Laptop to the ASA5505 I can Ping successfully.
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Aug 2, 2011
I have Cisco ASA 5505 installed and use as default gateway. I go to Internet through the ASA5505 Here is my Problem.I can not ping from ASA prompt(ASA#) to my Laptop connected to the ASA, but i can ping the ASA inside interface from laptop i can not use ASDM and the VPN Tunnel is not working between the sie
ASA# ping 10.10.10.12
???????????
100% lost
Laptop c
C:/ping 10.10.10.1
!!!!!!!!!!!!!!!!
Here is the Topology
INTERNET .<=========================>ASA<===============================> LAPTOP
I disabled window firewall on the Laptop , but no goof result.
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Jan 20, 2013
I'm trying to make a very plain and simple network with the ASA 5505, I've strated from scratch over a dozen times triyng to find where I'm going wrong. My main goal is to simply create an IPSec VPN connection to my ASA 5505 and simply ping and connect to devices with the "inside network", so far I can easily create and establish a IPSec VPN Connection, but up to this point, I cannot successfully ping or access a single device on the ASA 5505 inside network.I've taken, create the IPSec profile with the ASDM wizard, add exemption for the VPN IP Pool, add access-list from this Cisco link, url...All this and I can't make a single connection to the inside network. [code]
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May 6, 2012
I have ASA5505 configured with internal network as 192.168.15.0 and default gateway 192.168.15.1 From the inside network, i'm able to access internet and able to ping all website (enabled ping). and all internel network devices can ping each other. Except i cannot ping my gateway (ASA5505) 192.168.15.1. I'm continously seeing this message on the log, when i tried to ping.. How to fix this?
Denied ICMP type=8, code=0 from 192.168.15.xxx on interface inside
replace xxx with my network devices that try to ping the gateway..I dont want outsiders ping my gateway, i need ping for inside internal network only.
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Oct 25, 2011
Using an ASA5505, have 1 static outside address, want to access an inside SBS-Server on SMTP, RDP (3389), HTTPS and port 987
Have configured network object nat rules using the asdm, SMTP works (I can telnet to the server on port 25 from outside), however for some reason I can not telnet inside and out on port 25, so outgoing mail does not work. RDP does not seem to work from outside, 987 I havent tested from outside. When I try to create a network object nat rule for https I get this message from the ASA:
[OK] object network SBS-HTTPS
object network SBS-HTTPS
[ERROR] nat (inside,outside) static interface service tcp https https
NAT unable to reserve ports.
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Dec 20, 2011
I have installed ASA5505 in the network. Port forwarding has been done for one of the server in our LAN. Public users are able to access the server successfully. I am trying to access from inside using the same Public server IP, but unable to access it. Can I have this feature in ASA5505(I think it is loopback configuration). If so, may I know the configuration detail?
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Oct 28, 2011
I have been working on a configuration for single IP address (on outside ) of ASA5505.I am trying to utilize the outside address 192.168.0.249 to PAT/NAPT to 10 inside machines [code]
What I am not sure of (actually that could be considered all encompassing) is the mapped services/real services.Any constructive comments assistance?
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Sep 13, 2012
I am trying to access and ping the inside interface of a ASA5505 from a remote network. From the remote network, I am able to access anything on the local network, but the ASA5505 inside interface.The 2 networks linked by a fiber link which have a transport network on another interface. From the remote network, I am able to ping the transport network interface IP, but I would like to be able to ping the inside interface IP. When I do a packet tracer, I get a deny from an implicit rule.How can I achieve that?
Here are the subnets involved and the ASA5505 config.
Remote network : 10.10.2.0/24
Local network : 10.10.1.0/24
Transport network : 10.10.99.0/24
[code]....
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Jun 9, 2011
DNS resolution works and I can surf the web without fail. But if I try to ping any external hosts (I can ping inside interface of ASA fine) from the LAN I get timeouts. I can ping anything from the ASA without fail.
ASA Version 8.4(1)
!
hostname fw1-nat-ann
domain-name inmd.infoblox.com
enable password anWLNen9CTFp7B/X encrypted
passwd 2KFQnbNIdI.2KYOU encrypted
names
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Jun 18, 2012
I am able to reach VPN clients (Anyconnect) only from hosts directly connected to the ASA's inside interface subnet. However, hosts on other internal subnets (177.1.10.0 & 177.1.11.0) are unable to connect to clients on VPN. The ASA is running ver 8.4. [code]
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Sep 27, 2011
I am able to connect to my Cisco ISR 891 via VPN with the Cisco VPN Client 5.0.07.0440, but once connected I cannot access hosts on the inside. If I ping a host on the inside by name, nothing resolves. If I ping by IP, I get a reply from the public IP of the router. [code]
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Feb 10, 2011
I'm just new with ASA. I'm just self-studying on it. I was tasked to have an ACL that will allow inside hosts to access a specific network. Is there a way on how to know all the inside hosts on the behind ASA so that I can do a "object-group network" on those inside hosts which I think it will look neat.
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Jun 7, 2013
One of our company guys always complaining that few inside PC's are frequently loosing internet and reconnecting after some times.The Connectivity is as mentioned below:
Inside: Switch -> Router -> ASA -> Router -> Modem ->Internet ------------VPN-------------------------
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Jul 8, 2011
I currently have an out of the box ASA5505 and need to change the internal interfact from 192.168.1.1 to 10.20.3.1 so it fits in with the rest of the network.Tried using the ASDM Startup wizard (via 192.168.1.1) and it just seems to hang on "delivering the commands to the device".
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Nov 29, 2011
i have cisco asa 5505 Security adaptive firewall. my inside network is 192.168.1.0 255.255.255.0 . i want to add static route another network i have that network id is 192.168.2.0 . 255.255.255.0.how i can add the route.
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Nov 1, 2012
I have an ASA 5505 with 3 host license.I want to configure 2 outside interfaces and have inside interface. The outside interface going to a separate ISP.Will this work or do I need more licences?
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May 8, 2011
Have a problem in config of my ASA5505 --> I can't access Internet from my new created vlan number 4 (Vlan4):
here my config:
ASA Version 8.4(1)
!
hostname FWWIB1
enable password OEIOH8Zv/vNvif8C encrypted
passwd 2KFQnbNIdI.2KYOU encrypted
names
[code]....
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Jan 23, 2013
I have the following config below on my ASA5505, where I want to be able to access remote computers who are VPN'd into the inside network, for support purposes.I want to be able to ping the VPN ip from the LAN, and be able to connect to these computers via the VPN ip. [code]
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May 6, 2013
I have an issue accessing the inside network of my church from VPN. This only happens when I connect from my home network. I have no problem accessing inside network of my church if I'm connected from else where (my Clear Hotspot or someone else's house). Here is the hardware detail:
At the church, we are using Cisco ASA 5510 and we have so many VPN tunnels to different churches. At home, I 'm using Cisco ASA 5505. See that attached configuration for my home ASA5505.
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Nov 17, 2011
The ASA device is going to be the gateway for multiple distinct inside IP subnets. We can have have a unique outside IP address to correspond to each inside IP subnet if needed, but we need some means for a VPN client or a site-to-site VPN to have acess to a pre-definied IP subnet (i.e. if customer A establishes a VPN connection, they have connectivity to IP subnet X; customer B establishes a VPN connection, they have connectivity to IP subnet Y, etc.).Currently, the two inside IP subnets are 10.10.0.0/16 and 10.20.0.0/16. We will be adding more.The problem we are facing is that we cannot reach the VLAN 201 from the ASA we believe this is because. I have setup two addresses on port 0/1 Vlan1, 10.10.20.2 and 10.20.20.1 as an alias. How can we make traffic for the 10.10.0.0/16 subnet untagged and traffic for the 10.20.0.0/16 subnet tagged for VLAN 201.
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