Cisco Firewall :: IS There Any Drawback To Enable Anti-spoofing In All PIX 535
May 30, 2011
We are runing PIX 535 with software version 8.02. In ASDM, I see anti-spoofing is diable in all interfaces. If I enable it, is there any negative effect? Can I enable it in DMZ, inside, and outside interfaces?
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Apr 24, 2011
What is Anti Spoofing in ASA 5505. Can I enable it on ASA 5505. If yes , port will be inside or Outside. ? or both ?
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Mar 19, 2011
I have multiple questions about the PIX 525 software version 8.0(2) ASDM 6.0 (2)I am a windows network admin that is new to Cisco and routing in general. I have read through the forums and the Cisco documentation, but have not been able to fully understand the topics discussed within.
1. Anti-Spoofing Attack Protection
2. Scanning Threat Detection - Auto Shun
3. NTP Sync Verification
4. QoS implementation5. IOS and ASDM Backup
This option is currently DISSABLED for all interfaces.I know what ip address spoofing is, but what is the functionality of these options specifically? How does it work and should I enable it and for which interfaces? Second Question: Scanning Threat Detection - Auto Shun
I found this option in ASDM under: Configuration --> Firewall --> Threat Detection.Enable Basic Threat Detection and Enable Scanning Threat Detection are both currently ENABLED, but Shun Hosts detected by scanning threat is currently DISABLED. Also, the Networks Excluded from Shun field is empty. I know what the shun command does. I have used it many times when I have been fortunate enough to catch some piece of **** trying to spam my mail server or gain access to it.
What I am asking specifically is how does the Auto Shun work? Should I enable it and what are the potential consequences? Also, what exactly is a scanning attack?
I am not familiar enough with the PIX and with the topics discussed in the document to successfully apply the info within. Plus, I'm not sure it covers the kind of basic, all-inclusive bandwith cap I would like to put in place.
The goal is to cap the maximum internet (outside) bandwidth that inside5 can use to a reasonable percentage while allowing the other interfaces to have the remainder.
How would I go about this implementation? 2. Is there a way to allow inside1 - inside4 to use max bandwidth when there is no traffic on inside5?
I am probably, at least, the third owner of this device and I do not have an account with Cisco nor can my tiny (perhaps non-exsistant given the current economic state) IT budget afford any form of support or software licensing with them.My goal is to backup the IOS and ASDM data in the event that I have to replace the device due to a hardware failure.
I found a file transfer function within ASDM which allowed my to copy the files pix802.bin, asdm-602.bin and tfp from flash to my desktop computer. I also have a copy of the activation key info and my current configuration.
1. Have I backed up all the data/info I would need to restore this software and ASDM to another unit.
2. The activation key screen also has a serial number field. Is this the hardware serial number or is it for the software? and is it tied to this device specifically or can I use it to restore another unit if necessary?
3. Is there anything else I should do or be aware of regarding backup and restore for the PIX?
4. What is the tfp file?
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May 5, 2011
Is there any way to configure 3825 to ensure that all packets have a source IP address that matches the correct source interface (similar to ASA's 'ip verify reverse-path interface')? Currently, we manage anti spoofing with a bunch of ACLs, however I'm looking for a more manageable solution.
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May 28, 2013
After hours of trial and error, and searching user groups, I have found that on occasion, ASA v8.4 will stop pings with the IPsec-Spoofing logic. Interestingly, the packet-trace will say everything is allowed.
The fix (at least in my case, and one other) is to narrow the crypto-map to specific hosts, not subnets.
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Dec 13, 2011
how to configure ASA 5510 anti X edition ? Can I have a link explaining the configuration step by step ?
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Aug 11, 2011
tell me the command to view current anti-reply window size in ASA 5510?
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Sep 23, 2012
We need Solution for disabling Anti-Replay on the Firewall for a specific tunnel. ASA 8.4(2) ) does not support disabling Anti-Replay on specific Ipsec tunnel , is it true , then if we want to disable Anti-replay , what we have to do in ASA5540 .
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Oct 9, 2012
We want design a topology based on transparent proxies using WCCP. Our proxies can do spoofing of user ip addresses. So, the HTTP request will go out our network with the user ip address as source ip. The HTTP Response will arrive with destination address the user ip address. We want use WCCP to redirect inbound and outbound traffic because we have c3750 with L2 WCCP support. The outbound redirection, when the packet is going out our network is simple. But, the problem is the inbound redirection. How we redirect this packets to proxies by WCCP?. Is it possible?. This redirection is done by c3750 using TCAMs/hardware?. Our throughput could grow until 2-3Gbps and we are worried about the performance.
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Jun 15, 2012
I just purchased a Sharp Aquos Quattron LC-70LE845U with SmartCentral user interface and I can not access any apps because I live in Puerto Rico which Sharp says is not part of the United States. I don't really care if it is or isn't but I do want to check out the apps because right now its not really a smart TV and I kinda feel a little jipped. Any way I want to spoof the IP to think that it is in the United States. However I don't think that I can go the software route because Sharp has its own operating system and browser so I don't know what would be compatible. I'm using a D-link DGL4100 router if that information is useful.
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Mar 10, 2012
If I have an updated Antivirus in my network, do you still recommend having IPS installed in my network?
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Mar 31, 2013
Region : India
Model : TD-W8951ND
Hardware Version : V4
Firmware Version :
ISP :
The product manual of TD-W8951ND V4 states that it's supports MAC spoofing. But in the product itself, it is nowhere to be found. I tried contacting the customer care via email but they are too lazy to respond. If they disabled this feature then why in the world they mentioned in the manual. I double checked the manual before buying this model. Now I stuck with it.
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Aug 24, 2012
AV for SBS 2011 that also works with Exchange 2010? I found Trend Micro Worry-Free Business Security Advanced 7, but unfortunately it doesn't seem to have a free trial.
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Feb 20, 2013
Region : Malaysia
Model : TD-W8951ND
Hardware Version : V5
Firmware Version : V5
ISP : Streamyx
TD-W8951ND V5 No longer have Mac Spoofing support.i just bought this modem since my old one is faulty. and i realize that my modem is V5 my previous modem is V4 and there is Mac Spoofing support there.
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Mar 20, 2013
I have a simple setup where I have a 2911 router with three interfaces, Inside, Outside and a second "Inside" interface which is labelled as a DMZ. The Zone Firewall applied to the "DMZ" is actually Inside (until I can work through problems). I need to be able to access a device on the DMZ via its external IP so I have designed NAT to use IP Nat Enable commands. This is now working for me fine. However, since utilising IP Nat Enable, my zone firewall now denies return TCP / UDP traffic and consequently I no longer have any internet access. Looking at the syslog messages, the reason for this is that the router is denying these return flows not because they are matching the outside-to-inside policy, but rather they are matching the outside-to-SELF policy. The router seems the detect that the internet traffic is being returned to SELF, when in reality the NAT rule should pick this up and forward it to inside. I can understand why this is happening, because I am NATting all private / inside traffic behind the external IP of the router, which is assigned to the Gi0/0 interface. [code]
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Jul 26, 2011
what is the function of anti static protection
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Apr 4, 2013
I have many VPN sites using ASA5505 with broadband connection and terminating on a single ASA5550.I have a problem with one site. they are having poor performance. One of the issues I can see is an error on the remote ASA 5505.ive tried the reccomended fix using this command: crypto ipsec security-association replay window-size 1024.
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Apr 16, 2011
if y need to enable VPN IPSec through the firewall. y just need to need to allow the port 4500?
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Sep 5, 2011
I plan buy a virtual dedicated server, well as for anti-virus for it I am lost where to look for and what exist [what search]? any open source? url..is enough or needed additionally and other tools? Needed and software firewall to install?
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Mar 23, 2011
How to enable the VPN-3DES-AES and another ASA Box.Mate's license (VPN-3DES-AES Enabled) is not compatible with my license (VPN-3DES-AES Disabled). Failover will be disabled.The license on secondary is not compatible for secondary ASA for the failover. [code]
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Aug 15, 2012
May I know how to configure for remote accessing ASA 5525 via ssh?I have issued the following commands
ssh 10.60.0.0 255.255.0.0 outside
ssh 10.60.0.0 255.255.0.0 dmz
ssh 10.60.0.0 255.255.0.0 inside
ssh timeout 5
but I am not able to access ASA via ssh. Do I need to add any other command
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Jan 17, 2011
my windows is no longer connecting to the internet.i I ran a diagnostic and it said to check firewall settings for the http port(80), https prt(443) and the ftp port(21). I haven't change anything in my settings and dont know why all of sudden i hvae to check firewall settings.
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Jun 11, 2012
I am trying to enable Ftp traffic through our firewall at work. We have a Cisco 5505 ASA and we cannot access any Ftp servers outside our network. We are running 8.3(2). Any have commands I can run to allow us to connect to ftp sites?
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May 12, 2011
I have a pair of brand new 5520s I am in the middle of commission. After carving out all the DMZs etc I needed I realized that I really neede another physical NIC, not just another VLAN off a configured nic. [code]I am running 8.3(2). How can I turn these "Not used" interfaces into useable ones?
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Aug 2, 2011
I'm replacing a new ASA 5505 due to a corrupted flash. On the original unit, I had the ability to SSH into the device using TeraTerm with no problems. While configuring the new device, I entered commands to enable SSH into the unit.
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Sep 28, 2011
We would like to enable our HelpDesk and Network team the ability to connect to Laptops using our ASA 5510 VPN device using Secure VNC application. Not sure if this is possible or how to enable this option.
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May 14, 2012
We recently purchases the Cisco ASA 5505 to get familiar with it, possibly buying more appliances for our branch offices. However, since the appliance is installed, our SIP telephones no longer register with our SIP service provider.
The SIP phones are all on 10.0.1.0/24 while the SIP provider is external via the outside network. I copied our configuration below. how to enable SIP for all 10.0.1.0/24 hosts and ports 5060, 5160, 5260, 5360?
gcxfw# show running-config
: Saved
:
ASA Version 8.4(3)
[Code].....
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Feb 8, 2012
I have just erased an ASA and upgraded the firmware and then added an IP. How can I enable the ASDM as I can't get on it, here is the config:
ASA Version 8.4(3)
!
hostname ciscoasa
enable password 8Ry2YjIyt7RRXU24 encrypted
passwd 2KFQnbNIdI.2KYOU encrypted
names
dns-guard
[code]....
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Aug 21, 2011
how do i enable port forwarding on the CLI for ASA 5510. outside subnet is 192.168.1.0/27. when i try to ping another IP with that range i can't access.
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Feb 27, 2011
I am trying to enable access to use RealVNC on our Cisco ASA 5505 without using VPN. RealVNC uses port 5900. Users should be able to vnc to 99.23.119.78 and reach our internal server 192.168.1.4. So far they are receiving connection refused.
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Feb 27, 2013
I've done this in the past for specific host entries with no problem, but I can't figure out how to do this for an entire subnet. I need something along the lines of the following:
access-list OKC2DAL extended permit ip 192.168.1.0 255.255.255.0 192.168.107.0 255.255.255.0
static (inside,outside) 192.168.99.0 access-list OKC2DAL netmask 255.255.255.0
I see netmask as an option, but the ASA states "invalid option netmask." The ASA is running 8.2(2). OKC-PIX(config)# static (inside,outside) 192.168.99.0 access-l OKC2DAL ?
configure mode commands/options:
<0-65535> The maximum number of simultaneous tcp connections the local IP
hosts are to allow, default is 0 which means unlimited
connections. Idle connections are closed after the time
specified by the timeout conn command
[code].....
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Oct 11, 2012
I have a problem with an ASA5510 (8.0.4) firewall in South Africa (I'm in the UK).It's a replacement firewall that I am trying to configure remotely through a serial device with an internet facing connection, but the enable password is not working.I can connect to the device OK, type 'en' and when propted for the password whatever I use (blank, cisco, Cisco etc.) I get an 'invalid password' message.
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Aug 11, 2011
I have configured dhcpd in an ASA 5505 and every thing is working. I am testing it to give me a warning when the address pool is about to be finished or it is empty. But don't konw how to do it. if I run the "debug dhcpd packet", i get that the address pool is empty.
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