Cisco Firewall :: 515 How Many Concurrent SIP Channels Able To Make Through Firewall
Apr 13, 2011
How many concurrent SIP channels should I expect to be able to make through a PIX firewall? We currently have a PIX 515 with the SIP fixup enabled.it worked fine for a low volume of traffic, but once we got to around 400-500 concurrent SIP calls the PIX started to struggle. Calls were dropping and other Internet traffic was intermittent. When I decreased the call volume it recovered and everything returned to normal.Bandwidth wise, we were only using about 20MB, so I think that as it needs to inspect and remember SIP packets for the purposes of opening RTP ports, we probably hit a bottleneck in terms of either the PIX's CPU or memory capacity. I've not seen any specs detailing how many SIP fixups a PIX (of any capacity) is able to handle.I'm thinking of upgrading to a PIX 525 or PIX 535, but I'd like to know how many SIP calls they will be able to handle before committing.
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Jul 4, 2011
how simultaneous connections is supported on the ISR G2? I need a router with the 60,000 concurrent connections.
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Jan 9, 2012
We have a PIX 501 and I'm in the process of replacing it with a ASA5505. We're currently using the 501 for a site-to-site vpn for disaster recovery purposes and I'm trying to verify the number of concurrent connections we can have.
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Jul 29, 2012
What are the limitations on the max number of concurrent HTTPS connections when using Auth Proxy for HTTPS traffic on a Cisco ASA 5520.
1) What is the max number of concurrent Authentications that the ASA can perform (HTTPS)?
2) Once Authenticated. What is the max number of concurrent HTTPS Authenticated connections to the back end HTTPS server.
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Aug 13, 2012
Our current cable ISP is having issues providing us with consistant connectivity. I would like to bring in a second ISP to allow my users to choose where they will connect to. There will be two dns names and i just want to to be able to choose between them.
Is this possible on the ASA5505? supporting two ISPs at one time for VPN on both?
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Nov 15, 2012
in Cisco ASA 5540 Adaptive Security Appliance Platform Capabilities and Capacities, I see Concurrent Sessions: 400,000. Which mean what device can handle 400,000 session and no more. But if I'm using TCP State Bypass Feature (Inbound traffic pass via ASA but Outbound goes via different device). I can see such connections via show conn command with b flag.
My questions: 1. Will this limit (Concurrent Session) affect in this case? Or ASA can handle more such connections (for example 800,000 ...) in bypass state? 2. It's possible to tune timeout for such connection without using global timeout conn? My problem what I want to do by pass tcp connection for one IP with has very high connection/sec rate.
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Apr 22, 2013
I will be implementing a new firewall (cisco asa 5515x) on my existing 3750x (server switches) and my 2960s (user switches). What should I need to apply on my firewall and swtiches to make the implementation successfull. I will put my 3750x as my DMZ and my 2960s as my inside. The 3750x have multiple subnet and also the 2960s.which features and technologies i need to know on those 3 products. my 3750x and 2960s don't have any ACL defined and most common features are vlan, switchport, trunking, spanning-tree, stacking, vtp.how my asa knows that my 3750x/2960s have multiple vlans. my current connection right now on 3750x and 2960s is just through 6 ports i assigned as one trunk, below is my config [code]
my 2960s vlans are almost the same with my 3750x except vlan 160, 170, 192. but of course when i put this in asa, i have to segragate vlan for 3750x (192, 100, 110,160, 170) and 2960s (130, 150). for my 2960s connection to the asa and since this will have big bandwidth, i will use 3 ports on my asa (and trunk it) connecting to my 2960s and i will use 2 ports on my asa (and trunk it) connecting to my 3750x. the one internet ports and my one management ports on my asa will stay like that.
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Jan 1, 2012
communication between 2 vlans.i have 2 vlans
Vlan 100
ip add 1.1.1.1
!
!
!
Vlan 200
ip add 2.2.2.2
i want to make communication between 2 vlans on firewall 5520 ASA 8.2.
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Nov 27, 2011
according to this document I do port translation through CLI and I have following config:
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Sep 19, 2011
i have a 5510 with SDM 8.2.5 from clients connected to LAN i cant open a VPN connection! (using windows client L2TP or PPTP) there is not rules tho block this ports, why i cant connect?
my configuration:
FIREWALLP01# show running-config
: Saved
:
ASA Version 8.2(5)
!
hostname FIREWALLP01
domain-name MAIOR.local
enable password 28kg/dOQX80WtMHA encrypted
passwd 2KFQnbNIdI.2KYOU encrypted
[code]....
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Aug 22, 2012
i have router 3845 and then it's connected with pix and then its connected with vpn tunnel to the customer router. i am here trying to make vpn connectivity for devices. so on router i did static nat statements 10.124.90.124 10.200.200.1. this type of six statements i wrote for six devices. on the pix i did
isakmp key ******** address 208.39.107.230 netmask 255.255.255.255
isakmp policy 30 authentication pre-share
isakmp policy 30 encryption 3des
isakmp policy 30 hash md5
isakmp policy 30 group 2
isakmp policy 30 lifetime 86400
crypto map outside_map 60 ipsec-isakmp
crypto map outside_map 60 match address outside_cryptomap_60
crypto map outside_map 60 set peer 208.39.107.230
crypto map outside_map 60 set transform-set ESP-3DES-SHA-1
i have one question that i need to use physical subnet or nat subnet for crypto map acl? and also on the customer router which subnet they can use as well nat sunet or my router physical subnet?
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Sep 3, 2012
I have a cisco ASA 5540 and i cant make a simple PAT (many private IP to one public IP). Below you can find my conf.
[code]...
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Jan 22, 2013
I want to make ipsec vpn between ASA and Cisco 877 Router,crypto isakmp and crypto ipsec ACTIVE state its works fine but Cisco 877 can not ping ASA internet interface but can ping behind ASA PC,PC can ping 192.168.2.1 but Cisco877 can ping only behind ASA PC thats ip 172.20.1.18
Ex:
192.168.2.0(Cisco877) =====ASA(172.20.1.0)-------172.20.1.18 PC
ASA IP : 172.20.1.2.54
C877 IP 192.168.2.1
[code]....
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Sep 30, 2012
I need to make a report of the VPN history on an ASA 5510 and I cannot find a way that fast.
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Feb 4, 2012
I have turned on the aaa command authorization without applying adequate privileges to the user. I can now log in through that user but the ASA 5510 displays an error :ASA 5510# show running-config
ERROR: % Invalid input detected at '^' marker.
ERROR: Command authorization failed.
I am unable to make any configuration changes on the firewall. Is there any default user through which I can log in and disable the aaa authorization ? if not, how can I resolve this situation ?
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Oct 19, 2010
my client wants to make videoconference call thorugh Microsoft Office Communicator, this should be operating between host from one site to another one, but we already configured some rules in the firewalls, and making some test I see that the videoconference use dynamic ports (1024 to 65535) and if we let to operate the videoconference we should remove all the rules in the firewall and that's not the point.
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Jun 11, 2012
I am able to ping from Switch to firewall inside ip and user desktop ip but unable to ping from user desktop to FW Inside ip.. config is below for both switch and FW Cisco ASA5510....
TechCore-SW#ping 172.22.15.10
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.22.15.10, timeout is 2 seconds:
[Code].....
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Aug 2, 2011
We had a problem with SMTP inspection dropping some regular emails (Cisco 2901 IOS 15.0). The original configuration.
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Jun 21, 2011
We had a problem with SMTP inspection dropping some regular emails (Cisco 2901 IOS 15.0).Incoming mails are going thru Spam and Virus Blocker so that bypassing SMTP inspection is not security issue in this case.
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Dec 28, 2011
I have a question with regard to setting up the ID firewall on the ASA 5585 in a single forest, multiple domain windows network.Currently I have a semi-operational IDF at the top level but can't find users on the lower other domains, here is the setup:I have 3 domains.
[URL]
Both domains have a two way parent-child trust and I can look for users in AD Users/Computer on both domains. I initially setup the ASA to look at domain1.test.com using an LDAP aaa-server per the IDF instructions, and then proceeded to configure the ad-agent. I installed the adagent on the domain1.test.com domain controller configured the settings on that system and had no problem adding users to the firewall and getting functionality within domain1. I looked to see if I could see domain 2 and domain 3 users and found none. I went ahead and added the domain2 system to the adagent on the DC and the system says that it is up, but when I search for users is not pulling them from domain2. Instead, it shows domain1 users as domain2user1. I also configured another adserver in the ASA to search ldap on domain 2 to no avail.The cisco documentation states the following:•Before you configure even a single domain controller machine using the adacfg dc create command, ensure that the AD Agent machine is first joined to a domain (for example, domain J) that has a trust relationship with each and every domain (for example, domain D[i]) that it will monitor for user authentications (through the domain controller machines that you will be configuring on the AD Agent machine). Single Forest, Multiple Domains—All the domains in a single forest already have an inherent two-way trust relationship with each other. Thus, the AD Agent must first be joined to one of the domains, J, in this forest, with this domain J not necessarily being identical to any of the domains D[i] corresponding to the domain controller machines. Because of the inherent trust relationship between domain J and each of the domains D[i], there is no need to explicitly configure any trust relationships.Reading that it sounds like it should just work. I had everything properly configured before I installed the adagent, but I'm guessing that there is a chance that you can't have the adagent on the top level DC and get to communicate with the lower level domains.
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Apr 26, 2011
I do have the below setup,,
1. I have 6509 switch
2. I have 2 WLC configured in Active/Active mode connected in Trunk mode (L2 Port-Channel) connected with 6509 switch
3. On switch side i have configured the port as Trunk
4. L3 SVI for wireless users are created in 6509 switch (attached the diagram).
I would like to introduce a Cisco ASA 5520 firewall with AIp-SSM module so that all wirelees traffic can be inspected.
The issue is: Without changing any configuration in the network (switch & WLC) is it possible to introduce the firewall?
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Sep 7, 2011
How I can actively monitor the interfaces and overall status of 2 x ASA 5500s in an Active/Standby configuration?
I can setup monitoring of the interfaces on the Active member but I'm not sure how to manage the Standby member?
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Jul 27, 2011
I've been trying to configured Websense urlfiltering using ZFW feature on my Cisco 881G router. The router is running on IOS 15.0(1)M with Advanced IP Services. And I have confirmed it supports urlfilter feature.
This is what I tried to accomplish but IOS version 15.0x seems to have different command set.
-----------------------
class-map type inspect httptraffic
match protocol http
parameter-map type urlfilter param
server vendor websense 10.20.30.40
[Code]...
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May 7, 2012
This is one I am having a hard time finding an answer for. How many clients can a 3600 AP support? For 150 clients on one of these, what would the throughput be for each client?
If my calculations are correct, the device can deliver 420 Mbps, which gives each client roughly 2.8Mbps. Is this correct?
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Apr 30, 2013
I have two ASA5510 each with a security plus license and 10 SSL VPN licenses, in active/standby mode at version 8.4(4)1. It only allows up to two vpn clients (AnyConnect & SSL VPN) at a time, any extra vpn client would receieve "Login Failed" message.
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Oct 20, 2012
What the maximum concurrent users you can have on a Cisco 3925 for :-
1) Site to Site VPN using IPSEC tunnels
2) GRE tunnel sIf I have 90 users on a single GRE tunnel with 50mb Internet pipe using fat clients will this work ?
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May 23, 2013
I was asked to enable netflow in an ASA Firewall for Orion/Solarwinds server monitoration. Firewall is a 5550, with 4G RAM, and no extra modules but SSM-4GE. This firewall has 5 DMZ segments and ans specific segment for internet traffic.There are segments as unique subinterfaces in physical interfaces. Other segments as individual subinterfaces in the same physical interface (but individual VLANs)Usually firewall CPU flows between 30% to 40%. Rarely to 50%.
1 - How dangerous or risky could be implement netflow in this firewall?...This firewall is very critical for the customer. My concern is regrading CPU, traffic generated, memory, etc
2 - In a month, firewall will be migrated from 8.2 software version to 8.4 software version. Is there any incompatibility in some commands?...Would be recommended to perform netflow configuration after software upgrade?
3 - How could it be implemented for Orion monitoring, regarding each individual sub-interface (and so, each VLAN assigned)?I there any recommendation regarding configuration, best practices?
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Feb 26, 2013
I have some problem with the ASA 5510 ver 7.0(6). My manager wants to keep this as backup. tried lots of things but still users not able to access internet nor can i ping anywhere.For example when i ping 4.2.2.2 i dont get any reply.The runing config is below for ur ref :
HQ-ASA-01# show running-config
: Saved
:
[Code]......
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Feb 5, 2012
I need to create a firewalled segment that not only separates hosts from general population, but also from each other. The solitary confinement of firewalled segments.I know that I could create a bunch of sub-interfaces, one for each host or group that needs to be isolated, but I'd really rather not have to do that if possible. 1) It could become a management nightmare between ACLs and sub-interfaces and 2) it's a waste of IP addresses.s there any way that I can create a bunch of separate VLANs behind the firewall and have them all terminate at the firewall, using a single firewall IP address for the gateway?
VLAN 1 - hosts 1.1.1.5 and 1.1.1.6VLAN 2 - hosts 1.1.1.7
Firewall DMZ Interface - 1.1.1.1VLAN 3 - hosts 1.1.1.8 and 1.1.1.9
This way, the hosts are isolated and can't talk to each other unless they're on the same VLAN.I'm working with an ASA 5510 running 8.2.4(4).
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Feb 28, 2010
Can any ASA 5500 in particular the ASA5510 firewall support jumbo frames (i.e. greater than the default standard 1500 Bytes frames)?. I plan to use the ASAs to setup a point-to-point IPSec tunnel and need an Application frame of 4Kbytes intact and not segment it.I have done little checking on the Cisco Website and see it mention of Jumbo frames on the 5580 on 10Gig interface but didn't see mention 5510. 5580s are way over-kill and expensive for what I need is to run a mission critical one IPSec point-to-point with maximum of no more than 100Kbps so 5510 is perfect for me but not sure if it can carry the jumbo frame?
On the routers and switches it's the MTU settings and they are configurable per interface and I am OK and the circuit is T1 which the Telcos said it's OK since it's physical layer so the only unkown is the firewall.
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Nov 17, 2011
Is there any significance to the parameter "firewall-group" in the command
firewall vlan-group <firewall-group> <vlan-id>…<vlan-id>?
In other words is the series of commands
firewall switch 1 module 3 vlan-group 1,2
firewall vlan-group 1 100,101,102
firewall vlan-group 2 200,201,202
exactly equivalent to
firewall switch 1 module 3 vlan-group 3
firewall vlan-group 3 100,101,102,200,201,202
or
firewall switch 1 module 3 vlan-group 1,2,3
firewall vlan-group 1 100,200
firewall vlan-group 2 101,201
firewall vlan-group 3 102,202
All three of these options associate the same set of vlans to the FWSM but using different groupings. As far as I can tell, these groupings have no functional significance either on the switch side or the FWSM side. These are simply three different ways of specifying exactly the same thing? Am I correct?
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Jun 22, 2011
I have a ASA 5510 firewall with CSC module and Security Plus license for CSC module.Will you tell me how to configure my firewall to send emails to particular mail ID when someone login into the firewall or any virus attacks from outside.
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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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