I picked up a rather nasty bit of malware which resulted in a format and installation of Windows Ultimate 64, all well now except i cant get the wireless to work, downloaded assorted drivers from the dell support directory but to no avail, so questions are-:am i missing something obvious (windows function button for wireless does nothing)what is the correct driver for the N5040 and are there any tricks in getting it to work.
I got a Global Implicit Rule problem with my Cisco ASA 5510. Here's my configuration : url...I created a PAT translation so that my web server (group LAN Network) could be accessed from the Internet.Although every rule seems to be ok, i got a "tcp deny access" when i try to telnet my public IP on port 80 (ping is ok).
Why is there only one Global Implicit Rule, and not one for each Interface (like in the older versions of ASA OS) ?
I have found this in documentation (the same statement for version 8.3 and 8.4):
" Access Control Implicit Deny #All access lists (except Extended access lists) have an implicit deny statement at the end, so unless you explicitly permit traffic to pass, it will be denied. For example, if you want to allow all users to access a network through the ASA except for one or more particular addresses, then you need to deny those particular addresses and then permit all others. "
Does it mean that now all ACLs shoud have created manualy deny ip any any rule at the end ? I have migrated one ASA to version 8.3 (no host connected and I can't test it) but after migration I don't see this rule at the end of all ACLs. Does it mean that all traffic will go throu ACLs on all interfaces ? I didn't find any information about this change in documents describing new software features [URL]
I have an ASA5505 that I am setting up behind another firewall. The external firewall has all ports forwarded to the ASA which is fine as I can see the traffic getting to the ASA in the log. However when the traffic trys to return to it's destination the ASA assigns a random port number. For example for VPN the source port is 443 but when the ASA trys to go back to the public IP addess it is using port 52857 which is obviously blocked on the external firewall. The Packet Tracer also says the the traffic is blocked by an implicit rule on the ASA which denys all ip traffic however I can't delete this rule and as I test I have created another rule allowing all IP traffic.
Our external security department needs to scan, every three months, a computer behind the firewall. I need to create a simple NAT rule that will allow an ip address or subnet to the computers behind the ASA 5505. At the moment, we have a simple NAT rule which allow all network traffic to exit from inside to outside.
I've setup a site to site vpn on an ASA 5510 using ASDM (as I have many times before) and the tunnel appears to be up but I am not able to pass traffic. When I run the packet tracer from my inside network to the remote destination network, it shows that it is blocked by the implicit deny ip any any rule on my inside incoming access list.
I have an asa 5505 and I would like to adding a new rule for a network, however it was added, it seems it would be inactive. I have two inside network,192.168.12.0/24 (name: lanA) and 192.168.99.0/24. (name: lanB) I have the following in the running-config:
access-list lanB_acl line 1 extended permit ip 192.168.99.0 255.255.255.0 any access-group lanB_acl in interface lanB_interface
But when I tried to reach a host in the lanA, the packets are dropped. I configure the asdm, which shows this on the LanB interface:
1 lanB_network | any | ip | permit (hits 344) 2 any | any | ip | deny
and I checked the packet tracer with: tcp, source: 192.168.99.57:10460 dest: 192.168.12.2:443 and it shows that the packet has been dropped by the last 2. 'implicit any any ip deny' rule, in spite of my access-list rule (access-list lanB_acl line 1 extended permit ip 192.168.99.0 255.255.255.0 any) preceded it, and active.
The lanB and lanA interfaces are the same security level 100, and I can reach the outside/internet from 192.168.99.57 Is it possible that I have to reload the rules or something like in order to apply? Or I missconfigured something?
I have a computer behind the ASA 5505 firewall. The computer needs to access Microsoft Activation Server. Reading some website information, I need to allow a huge list of servers that basically points to www and https traffic. Therefore, looking at this heavy requirements, I prefer to allow this computer to navigate to any https or http (www) server outside of the firewall.I have included my current asa 5505 configuration. [code]
Just started using our ASA 5505 v8.2 (1) Trying to configure the ASA appliance to allow access into an internal resource (i.e want to be able to RDP into a system behind the ASA from the internet).I have used a static NAT:
When I view the logs it is reporting the following:Inbound TCP connection denied from 206.100.100.1 (external IP) to 100.100.100.2 /3389 flags SYN on interface outside.Been pulling my hair out with this one as I believe I have everything configured correctly.
I accidentally setup two schedule rules both with the name of "Log". When I highlight either rule, and try to delete either, I get error "The rule is being used by another rule and cannot be deleted" How do I delete?
Got an ASA5505 connected to another endpoint running IPsec and being NAT'd at each end to a 10.0.0.0/24 network. I can pass other types of traffic through the ASA 5505 but not RTP traffic. The moment it is NAT'd and hits the firewall rules it gets denied by the default deny at the bottom of the list.
Currently the rules are as follows
Incoming External allow ip any any allow tcp any any allow udp any any default deny
[code].....
It wont allow us to setup a voip call...however when the same call manager sets up a voip call NOT using this ipsec tunnel it works just fine.
ASA 5510 running without issues for a while but we needed extra port so added a 4GE SSM.
Having installed the 4GE SSM we had some issues with the card not liking a connection to our switches and only working by plugging directly from the server into the firewall, not great as we wanted extra servers on the line in the future. So we upgraded the firmware and no are at an impasse.
We have upgraded to 8.0(4)3 and now we cannot get any traffic through the port, we can't even connect to an external DNS server. Running a packet trace I get an immediate error on the first step '(l2_acl) FP L2 rule drop', and it appears as though the outside connection is down.
I have some experience on setting up basic port forwarding and NAT for internet access, webservers, mail but this has thrown me.
I am creating access rule on a ASA5520 running ASA 8.2 (1) and ASDM 6.2(1) and found that the GUI has less option then when creating access rule on a ASA5505 running ASA 7.2 (3) and ASDM 5.2(3) (see attachment). Is there an option that enables me to get the same configuration options on the ASA5520 running ASA 8.2 (1) and ASDM 6.2(1) as I have on the ASA5505 running ASA 7.2 (3) and ASDM 5.2(3).
i have a Cisco Rv082 with Firmware v4.0.4.02-tm (Jul 4 2011 13:30:56)I have configure WAN1 with a public IP and netmask 255.255.255.252. (Only one public IP in use) Internally the LAN is a 192.168.169.0/255.255.255.0.I need to add some rules like
Service: HTTP Interface: WAN1 From: ANY To: 192.168.169.2
But after rule configured the connection still not working, it only works when I add a port forwarding.For HTTP maybe port forwarding is OK, but other services I need to grant access to a specific public IP address, not to everyone. So I need the Firewall rule, but is not working, it always block the request. [code]
I have a PIX with 600 active access rules but many rules arent't in use. A lot of the rules aren't necessary anymore but I don't know what they are. How to know what rules are working?
Can you set the ASA 5500 series to learn the rule itself? I am talking about putting it into learning mode for first few weeks. I have done this with Zone Alarm software, but not sure this is available in Cisco 5500 series.
I am a novice with networks but do have a fair understanding of networks. I have a small business network, utilizing a RVS4000 router (Firmware V2.0.27)I am attempting to set up firewall rules to block certain web sites at certain times.I have successfully set up rules using source and destination ranges, to deny service 24 hours a day everyday.
However and here is the problem when I attempt to edit any of the rules (I want to change the time to certain hours of the day) it allows me to edit the rule but when I attempt to save I get an error message up saying there are invalid characters and it will not save the changes?create the whole thing with the changes I want it works fine, is this a known bug?
I am trying to add 89,462+ access list rules to an ASA 5510 running 8.2(5). I have added all the rules to an object group and when I try to apply the access list to an interface it gives me the following error:
ERROR: Cannot add policy to rule engine ERROR: Unable to assign access-list wan-out to interface wan
I have not tried not using an object group and just putting the rules in the access list. I want to be able to add to these rules if needed easily.
I think it's clear that i have exceeded the rule limit for the ASA. So my question is, what is the rule limit for an ASA 5510 and which ASA could I purchase that would handle this amount of rules?
we have a nat exemption rule for 10.0.0.0/8 to w.x.y.z followed by some static nat rules and then dynamic policy nat rule for 10.0.0.0/8 to w.x.y.z natting to IP a.b.c.d.When I do a packet trace from 10.10.10.10 to w.x.y.z, it shows the packet first matching against the nat exemption rule, and then immediately afterwards it matches the dynamic policy NAT rule. The static nat rules are being successfully bypassed (which is what I want), but why does the dynamic policy nat rule apply if an exempt rule has been hit already? An actual test between the IPs above reflects the result of the packet tracer as well (IP a.b.c.d is seen on server w.x.y.z).We are running the following software on an ASA5520.
I am attempting to allow traffic from one vlan to another.Vlan 1 is on Interface 0/2.vlan1Vlan 2 is on int 0/3.vlan2Each vlan can communicate inside it's own vlan, and the gateway on each responds to vlan specific clients My problem is that I am unable to communicate between the two vlans. Using the ASDM packet tracer tool, I find that packets are denied by the default rule (on the second Access List lookup). It appears as if the packet never reaches the other interface. The access rules are set up to allow traffic from one vlan to another (inbound), on both interfaces. Testing from either vlan to connect to the other fails. Below are the accee-rules for each vlans. Once I get basic connectivity working.
access-list aVlan1; 3 elements; name hash: 0xadecbc34 access-list aVlan1 line 1 extended permit ip any 192.168.151.64 255.255.255.192 (hitcnt=0) 0xeb0a6bb8 access-list aVlan1 line 2 extended permit ip any 192.168.151.128 255.255.255.128 (hitcnt=0) 0x3a7dfade access-list aVlan1 line 3 extended permit ip any 192.168.151.0 255.255.255.0 (hitcnt=0) 0x93302455 access-list aVlan2_access_in; 3 elements; name hash: 0x6dc9adc7 access-list aVlan2_access_in line 1 extended permit ip 192.168.151.64 255.255.255.192 192.168.150.0 255.255.255.240 (hitcnt=0) 0x054508b7 access-list aVlan2_access_in line 2 extended permit ip 192.168.151.128 255.255.255.128 192.168.150.0 255.255.255.240 (hitcnt=0) 0xc125c41e access-list aVlan2_access_in line 3 extended permit ip host 192.168.151.3 192.168.150.0 255.255.255.240 (hitcnt=0) 0x4adc114c
I have configured the primary firewall every thing seem to be fine, And we have configured fail over device while config is getting replicated to the fail over device we are getting below error.
ERROR: Cannot add policy to rule engine ERROR: Unable to assign access-list LAN_out to interface inside
IOS and Model are same.But all the config got replicated from primary to secondary but except the one access group command.
After upgrading to 8.4(2) and ASDM 6.4(5) I seem to have an extra access rule duplicating an existing rule, this is only visable through the ASDM. When using the CLI you can't see this duplicate rule.
I therfore get the following warning everytime I make a config change using the ASDM [code] If I delete this rule it returns everytime I launch the ASDM!
I also have extra config under Firewall>Configuration>Public Servers that I didn't have before. If I delete it, again it returns.
So I was doing some testing with my BB Playbook where I wanted to see what outside connections it tried to make during startup and whatnot. I have a pix 506e running 6.3(5). I created an simple 'deny ip any any' access list on the inside interface so that the Playbook doesn't actually make any connections, but I set up a 'capture' on the inside interface accepting 'ip any any' to see what kind of traffic I could see heading outbound from the Playbook. Well, it started off showing attempts to query DNS (and failed, naturally), but then after a couple of minutes, it tried to connect to a couple of IPs over port 443 and actually got a response!!! For the life of me, I can't figure out how this can happen. NO traffic should be allowed outbound due to my explicit 'deny' rule, but for some reason some traffic on port 443 made it past the firewall and got a response back. There are no other rules in the access list except the 'deny' rule. My PIX configuration is quite simple and I cannot see anything that would allow the Playbook traffic to circumvent the access list.
I've come to think that either RIM has found away around Cisco access-lists, or there is a bug in the Pix OS. I know it's an old appliance/OS, but still. I wouldn't think it could be THAT easy to bypass the firewall.
I am managing a firewall setup with some ASA 5510's.One of the rules I have in the ACL list is to allow or deny (By disabling the rule) access to certain subnets.
I have a 3rd party vendor that from time to time need access to specific servers in the infrastructure, but I want to keep a certain level of control when they can access them and especially when they can not.
I know it works fine, I have done several tests to verify when they can connect and when they can not. But, now comes the tricky part, if they are already connected (Remote desktop) to the system, and I disable the rule, they are STILL!!! connected. It seems the firewall does not terminate the active session / cconnection when I disable the rule allowing them access..
We have several L2L tunnels with remote networks that access networks inside. I am using object-groups to define the networks, then using the same object-groups in the twice-nat so the networks are accessible. For example:
Remote Network - 192.168.1.0/24 defined as object "RemoteA" Inside Subnet - 10.1.1.0/24 defined as object "LocalA" object-group network RemoteVPN network-object object RemoteA network-object object RemoteB etc....etc..
[code]....
I receive the "Asymmetric NAT rules matched for forwared and reverse flows" error, inidcating Source of "RemoteA" IP and destination of "LocalA" IP. Typically this indicates a missing twice-nat; however they are in the object-groups that are a part of the twice-nat specified above. The only way I have been able to clear the errors is to create a new twice-nat using the individual subnet objects. If I do a "show nat object-group LocalVLANS detail", all the subnets are displayed accordingly.
I have many twice-nat statements using object-groups, and working for over a year now. I only started recently having issues with this error; and am concerned it is related to some cap on using object-groups in twice-nat.
We have a setup where our e-mail server is hosted in-house.Our network is connected through a RV042 gateway. Port 25 is forwarded to our internal e-mail server.Our smtp service should be limited to receiving incomming connections only from 4 specific ip ranges which I set up in the firewall rules.The reason is that all smtp is managed and protected by an external anti-spam/vires provider.
However it looks like any computer is able to connect to our port 25 and be forwarded to our e-mail server.Does portforwarding overrule firewall rules - ie. you can not limit access with the firewall if you decide to port forward?Is this a "fixable" situation - or is the RV042 not built for handling this setup?
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"
I have a server behind an rv042 that i would like to block access to on one port from outside in. I have configured the rule as follows:
priority = 1. policy name<name>. enable<checked>. action = deny. service <service to block>. source interface = wan1. sources = any. destination = <public ip address of server>. day <nothing>.
This does not block the intended port from outside. I also changed the destination to be the private ip address and i changed the source interface to LAN and to *. What is the correct syntax to do this?. Port forwarding is enabled. I noticed that there is one entry in the forwarding table for the public ip but it is going to a dead private ip address. Would this have an effect?
I have a ASA5508 running in 8.3(2) and without enable NAT. If I do a static network address translation for a inside address. any Implict rule in xlate?In another words, what is the forwarding rule ASA choose while there is routing exist and NAT? Do I need to setup bypassing NAT?