Cisco Firewall :: FWSM Acl Rules Rv042 Not Working At All
Sep 20, 2011
On my RV042 (I used it for a couple of years now without issues), the DIAG led light amber (steady). It's not documented in the user manual.User manual says only:,Diag (Red) The Diag LED lights up when the Router is not ready for use. It turns off when the Router is ready for use.",Router does not work anymore and I can't access its web page as I used to do before this problem.I did a reset to factory default (reset button hold for more than 30 sec.) but it didn't change anything.
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Jun 26, 2011
I'm using ASDM 6.2 with a FWSM on a 6500.
At the moment everytime I want to make a change to firewall rules I click apply and the rules are applied Immediately. I have to make multiple changes during the working day which I don't like to do.
What I would like to do is make changes during the day but not apply them until out of hours (some sort of batch mode). Like I can do in my check point firewalls.
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Apr 8, 2012
I wanna block the Lan IP address(eg:192.168.2.106) to visit wan web, and allow it to lan.How can i set it in access rules?
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Oct 13, 2011
I have a new (about 4 months old) RV042 V3 4.0.0.07 firmware that I am trying to use in fail over mode. I have a SOHO and I normally use cable Internet connection. It is quite fast (15 megabit), but not super reliable. I have added DSL (3.3 megabit) which is five nines (supposedly) but not so quick.
I have a Westell 7500 wireless DSL modem located in the basement, where the telephone lines enter the building. This gives me a wireless link to the second floor server room through a wireless router that connects to WAN 2 of the RV042. The cable modem is in the server room and connects directly to the WAN 1 of the RV042. The cable works, but when it goes down, the DSL link comes up but does not allow Internet traffic. The RV042 is set up as a Bridge and I have set up port forwarding to get the cable to work and used similar firewall commands to route the traffic if the router switched over. I suspect that the problem is in the port forwarding (port 80) or the firewall rules(which are pretty simple) because everything looks like it switches over, but it just doesn't work on WAN2.
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Oct 31, 2011
I have a system with a RV042 managing the internet connection.Behind the RV042 I have an e-mail server and a development machine that I access through SSH.My problem is that if I forward port 25 to my internal e-mail server it bypasses the firewall rules.I have an external vires and spam scan host that is the only one I should accept incoming email from - but it seems that whenever you add a portforward then it bypasses the firewall rules.
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Sep 10, 2012
I've setup a GroupVPN and connect to the RV042 with the Shrewsoft VPN client, works like a charm as opposed to QuickVPN ;-)The firewall is configured with an explicit deny rule for RDP access to an internal server, also an explicit allow rule is created for certain IP numbers as source. I noticed that I need to create an explicit allow rule for the subnet the Shrewsoft client is using for the virtual adapter or I will not be able to access the internal server via RDP through the GroupVPN tunnel. I would think that setting up a tunnel defies the rules created for direct access on the WAN port.
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Jun 4, 2013
I have a RV042 router on a single WAN and an internal LAN. I have configured port forwarding as follows: HTTP[TCP/80~80]->10.0.0.6HTTPS[TCP/443~443]->10.0.0.6IMAP[TCP/143~143]->10.0.0.5IMAP SSL[TCP/993~993]->10.0.0.5SMTP SSL[TCP/587~587]->10.0.0.5
Everything works just fine when I have the firewall DISABLED. However, when I enable it the behaviour is erratic. 1 out of 10 attempts to connect to ANY port forwarded works. Almost all attempts time out. Notice that this happens even if using only the default firewall rules (which should be bypassed by the port forwarding as I read in other posts).
My second try was to create firewall rules manually, overriding the default ones. I tried adding rules from source WAN1 (where my connection is) to ANY and to SINGLE IP's on every port. Nothing seems to work.
I don't know what I'm doing wrong, this is really bugging me. I had to turn the firewall off so we can access our servers from outside the office. This shouldn't have to be done.
Just found out that my firewall is getting LOTS and LOTS of Blocked - SYN Flood entries. I think this is why we are having trouble with the firewall. Could this be the problem? I have no idea where all these SYN packets are coming from since they appear with spoofed IPs or come from different bots all over.
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Oct 2, 2012
I have configured the access rules for RWW, RDP, HTTPS and FTP and enabled them. Cannot access the server remotely. I have configured single port forwards for all the services and that does not work either. What am I missing? I installed this new unit in place of and old WRT400N that worked fine except for needing to be rebooted frequently.
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Mar 21, 2012
i have a cisco 837.I need hardening the access and firewall rules. I dont understand ip inspect.
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Jul 5, 2012
I am configuring a 2921 with enhanced security using the CCP. I have found a behavior that seems strange to me and I'm not sure if I'm misunderstanding something or missing a setting. It seems that if I create a firewall rule to "allow" traffic through, that traffic gets dropped, but if I set the action to "Inspect", the traffic comes through fine. I can actually reproduce this at will by setting up a rule from out-zone to self to allow traffic and I cannot telnet into it from an external ip, but if I change that rule to "inspect" i can connect fine (i dont want that rule set up permanently, was just using it to test the firewall).
If I set the allow rule to log, I see the following line in the application security log:
(target:class)-(ccp-zp-out-self:user-fw-ccp) Passing telnet pkt 1.1.1.1:58141 => 2.2.2.2:23 with ip ident 0
(where 1.1.1.1 is the external laptop and 2.2.2.2 is my WAN IP address of the 2921)
So it looks to be passing the traffic, but that traffic is getting dropped somewhere because the connection is unsuccessful.
Is this the expected behavior of "Allow" action? Is there something I can do to make sure "allow" traffic actually gets through?
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May 3, 2011
We have 2 FWSM modules in each 6500 switches. 1st module is having 04 firewall vlan groups with 18 vlan interfaces in a single context firewall. All are working fine with no issues. Recently we create one more vlan on MFSC and add into the same firewall module. However newly created vlan inside the FW is not able to communicate with outside and also outside users not able to reach newly created subnet. But within the firewall zones (other interfaces) it can communicate. Once we did packet capture we noticed that its hitting firewall outside interface only and when we ping we got TTL expired error. we have default routes to outside and there's no any route inside as new segment is within the firewall (no any hop).
I guess there's no limitation on number of vlans that we can assign on one firewall eventhough there is a limitation for number of vlan-group which is 16 max (but we are within that limit).
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Mar 25, 2011
I have a Pix 515, and a question about firewall rules/access lists.I have recently created a new VPN group, and IP Pool.I created a firewall rule that grants access via TCP to a specific IP address from this firewall. However, when I test the VPN from outside the company, I find I can get to whatever server I want to. There is no allow any/any. I do not think there is any other rule before it or after it that would give that kind of access as most of our rules are for specific IP's and protocols.
The only thing I could think of is that we are using the account management in the firewall to authenticate the users. I am giving the VPN users level 3 access.I will probably not post my config as it is my firewall config, and it would be against company policy.
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Dec 5, 2011
Is it possible to provision 3 different public IP addresses to the same DMZ IP (Web server) on an ASA running ver 8.2(4)? Unfortunately, the way the server was provisioned Static or Dynamic PAT will not work. I have read that ver 8.3 and up supports natively one-to-many NAT translations, but at this point the client is not ready for an upgrade. Is there anything else I could do to overcome this challenge?
Outside --------> DMZ
200.1.1.1------> 10.1.1.1
200.1.1.2------> 10.1.1.1
200.1.1.3------> 10.1.1.1
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Jun 24, 2011
I'm having some troubles with NAT, packets does not match nat rule (that i think it should) and is not choosing the right egress interface. So crypto map never starts
this is the relevant config:
interface Port-channel2.4
description Public TESA ADSL internet connection
vlan 7
[Code].....
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May 17, 2012
Boss wants a listing of the firewall rules only. What's a command I can run that will give me a listing of this?If I can get an output of firewall rules only, via GUI, that'll work too. It just needs to end up with a printout on a piece of paper telling me what the firewall is doing.
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Jul 5, 2012
I have a problem with firewall rules. If I set some rules for open communication and some for closed, so I cannot reorder from the end to begin.
Last rules are at the end of all. So I can only reorder in one pages.(I have about 33 rules = 3 pages of rules)
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Mar 23, 2012
Ive migrated from my lab pix to a lab asa and am trying to open certain ports to my internal network.
in my confg on my pix i had acls to open port 51413 to an inside host along with the static nat rule.
what i am trying to accomplish is same on my asa, however the nat rules seem to be slightly different, and i'm not completely sure how to do it.
My ACL and nat rule is below. I'm pretty certain my acl is correct,but i am not sure as to what to do with my NAT rules to allow a translation for the tcp service.
access-list outside-in extended permit object tcp51413 any object outside nat (inside,outside) source dynamic all-inside-nat interface
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Sep 26, 2011
I have a question about the new nat implementation in an ASA 8.4. when I perform a "show nat" I get the following result:
1 (outside) to (inside) source dynamic any NAT-SSL-VPN_172.30.100.250 destination static 00B_172.30.100.0_24 00B_172.30.100.0_24
translate_hits = 26, untranslate_hits = 0
2 (inside) to (outside) source static LAN-HOST_172.30.100.11_LNX01 WAN-HOST_84.199.44.2_32_LNX01 service TCP-80-HTTP TCP-80-HTTP
translate_hits = 0, untranslate_hits = 0
Is it possible to change the order of the nat rules without removing and reapplying the rule on position 1 ? (both rules have to stay in section 1)
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Nov 7, 2012
I have several working VPNs between ASAs 8.4 and 8.3The way this was set up is with cryptomaps that match whole subnets and ACL on the outside interface to permit from/to the RFC 1918 addresses.I notice that the hit count is zero on these rules and so I wonder if they are actually necessary or doing anything.If they are not where can an acl be applied to restrict the VPN traffic? Outbound on the inside interface?
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Aug 2, 2011
How can I filter my local lan's URL requests? Is it possible to have some sort of list like...
Default_User_Group
*.microsoft.com/*
*.mydomain.com
*.google.com
Then only allow certain ip's access to the entire internet like this...
Internet_User_Group
It would be nice to possibly be able to add the rules to users in my domain, then associate the domain account with an IP OR have them login to view webpages.
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Nov 14, 2011
I have PIX 535 and using ACLs for allowing traffic. I need to clean up the rule base. I would like to know how to fetch a report of Unused rules for long time?Also when a traffic is being allowed, I want to know through which rule number its being allowed?
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May 31, 2011
Note If you configure VPN, the client dynamically adds invisible NAT rules to the end of this section. Be sure that you do not configure a twice NAT rule in this section that might match your VPN traffic, instead of matching the invisible rule. If VPN does not work due to NAT failure, consider adding twice NAT rules to section 3 instead.
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Jan 3, 2013
I have an 871 and all I need to do is some basic rules. Here is the config I am having the issue with.
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Aug 13, 2012
When i create a rule and enable icmp in ASA inside to outside direction to testing purpose, but I can't ping outside address ,
access-list ICMP extended permit icmp any any
access-group ICMP in interface inside
LOGG:::
ping 8.8.8.8
%ASA-3-106014: Deny inbound icmp src outside:122.255.3.1 dst inside:202.124.160.1 (type 0, code 0)
%ASA-3-106014: Deny inbound icmp src outside:122.255.3.1 dst inside:202.124.160.1 (type 0, code 0)
then I have permitted icmp for return path then it works, configs and logs are followed,
access-list ICMP extended permit icmp any any
access-group ICMP in interface outside
LOGG:::
ping 8.8.8.8
%ASA-6-302020: Built inbound ICMP connection for faddr 122.255.3.1/0 gaddr 202.124.160.1/14 laddr 192.168.1.1/14
%ASA-6-302021: Teardown ICMP connection for faddr 122.255.3.1/0 gaddr 202.124.160.1/14 laddr 192.168.1.1/14
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Oct 17, 2012
I got some issues with my CISCO ASA, the thing is that when I add a new rule on the device this rule duplicate and goes to the bottom. We already tried to delete the duplicate rule but it always show an error.
-Model 5585
-ASA Version: 8.2(5)
-ASDM version: 6.4(5)
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Nov 3, 2011
I have a firewall enabled cisco 877 with these rules.
Interface Dialer0 IN 10 deny ip 0.0.0.0 0.255.255.255 any 20 deny ip 10.0.0.0 0.255.255.255 any 30 deny ip 127.0.0.0 0.255.255.255 any 40 deny ip 172.16.0.0 0.15.255.255 any 50 deny ip 192.168.0.0 0.0.255.255 any 60 deny ip 224.0.0.0 15.255.255.255 any 70 deny ip 240.0.0.0 15.255.255.255 any 80 permit tcp any any eq 22 (8810 matches) 90 permit tcp any any eq 242 100 permit udp any any eq snmp 110 permit icmp any any echo (6 matches) 120 permit udp any any eq non500-isakmp (3 matches) 130 permit udp any any eq isakmp (1 match) 140 permit tcp any any eq www (26 matches) 150 permit udp any eq domain any 160 permit tcp any any established (6 matches) 170 permit tcp any any eq smtp (2 matches) 180 permit tcp any any eq pop3 (3 matches) 190 permit tcp any any eq 443 200 permit esp any any 210 permit ahp any any
Interface Dialer Out 10 permit ip any any
This rule which is its function?"permit tcp any any established"
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Apr 1, 2013
Can any1 tell me wat is the difference between ASA-SM1 and FWSM.
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Apr 10, 2012
I want to upgrade a pair of FWSM in active failover from 4.0(4) to 4.1(8) i just want to double check the process. i have tftp access to the primary at the minute. i cannot access the same tftp server with the standby. do i need flip over to the standby to be able to tftp the image across?
failover activehostname# changeto system
hostname# copy tftp://x.x.x.x/c6svc-fwm-k9.4-1-8.bin flash:image
hostname# copy tftp://x.x.x.x/asdm-622f.bin flash:asdm
hostname# reload
Once i have the images loaded i reload both at the same time?[URL]
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Dec 17, 2011
I am planning for an VSS in Core but firstly I need to upgrade FWSM which is at 3.2 Ver to 4.0.4 (min release) I have checked software dependencies but not sure about Hardware Dependency on Fwsm and Chassis for Eg. Rommon Upgrade on Chassis.
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Jun 26, 2011
I wanna upgrade FWSM Version 3.1(11) to latest 4.x version is this possible or i have to upgrade first to 3.2 and then to 4.x?
Is there any changes in configuration commands that i need to know? The version that 6500 running is s72033-advipservicesk9_wan-mz.122-18.SXF14.bin,an upgrade to 6500 is needed also?And if so what ios version will i put?Also which is the asdm supported version?
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Jan 15, 2012
We recently deployed a FWSM on our 6503-e boxes (w/ sup720). NAT is working (PAT) but the issue I am seeing is private traffic from remote sites is not being allowed through the FW. I was able to get the remote site to ping the FWSM itself (inside address), but no hosts behind it. Maybe an ACL issue? Also when I turn off NAT on the remote end, I can than access everything (We are NATng on both ends). Im a routing guy by nature so I will defer this to the security guys out there.
Topology
Hosts (inside/10.15.25.0/24) > FWSM (outside/public IP) -> Core Router -> MPLS CLOUD -> Core Router (NATng) - > Hosts (192.168.1.0/24)
ACLs applied to inside/outside interface
FWSM# show access-list ATX-ALLOW-IN
access-list ATX-ALLOW-IN; 15 elements
access-list ATX-ALLOW-IN extended permit tcp any any (hitcnt=222)
[Code]....
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Oct 14, 2012
I have made a firewall rule that accepts FTP from WAN2 outside to the inside private LAN with IP address specified.But this didn't work.When I added in the forward rules that FTP had to be forwarded to this IP address it worked.I have done some testing but it seems that the firewall rules do not have any priority on the forward rule.If I disable the forward rule i cannot connect with ftp even with a firewall rule made.
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Feb 5, 2012
I'm trying to configure a second server on my network but whenever I add the static NAT rule, the internet stops working on that computer.
Here's my Cisco ASA configuration:
ASA Version 7.2(3)
!
hostname domain
[Code].....
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