Cisco Firewall :: ASA 5520 VPN Tunnel Up But Not Traffic

Nov 1, 2012

We just migrated from a single 5510 to a dual (failover)  5520, It seems that everything is working except the remote VPN. We can establish a tunnel and authenticate as local users, (going to LDAP when all is working) but no traffic is passing. I know I am overlooking something but cant see it. [code]

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Cisco Firewall :: ASA 5520 8.3 VPN Tunnel Drops Traffic

Aug 23, 2011

We have a 100 Mbps WAN circuit, we have configured an IPsec tunnel between ASA 5520 and Cisco 3845 Router for our DR site replication via Veeam Backup and Replication, it was working fine before, when we established the 3DES tunnel the traffic for certain subnets is dropped after an hour and it stops the replication, although tunnel remains up and we can access the other subnets, as soon as we clear the crypto SA and ISAKMP sessions on the firewall the traffic starts flowing again and then after an hour the traffic is dropped again.So far the testing and differnet configurations we tried are as under.
 
Tried with a different MTU size both on firewall and ESXi servers but nothing happened.Their is no QOS configuration.Checked the utilization on both ends its Noram although their are subsequent 100% spikes on Cisco 3845 but on average it remians at 30-40%.

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Cisco VPN :: 5520 - Tunnel Up But Not Passing Traffic

Jan 15, 2012

I have a site to site tunnel between two 5520 ASAs.  Tunnel is up but when I try to talk to the other side, the implicit deny on the inside interface of the local ASA blocks the traffic.  When I ping, the tunnel comes up but in the logs it says it is blocking icmp from inside to outside.  I have tried the sys opt connection permit-vpn but it is not working.  The traffic is from 5 specific machines within the local sub net that I put in a network object group called Celerra_Replication.

I want to them to be able to talk to 5 machines on the far end of the tunnel in a seperate sub net.  They are in a net wrok object group called GP_Celerra_Replication The ACLs I created for this appear to be created correctly allowing IP from Celerra_replication to GP_Celerra_Replication and the opposite on the other side. 

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Cisco VPN :: ASA 5520 - Monitor / Trace VPN To VPN Tunnel Traffic?

Sep 7, 2011

I have a two ASA 5520's  and I want to be able to see or monitor the traffic between each tunnel. I am using external addresses but for the sake of this question I will use the following: 1.1.1.1  to 2.2.2.2 .   How can I montior the traffic? 

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Cisco VPN :: Crypto ACL Asa 5520 Direct All Traffic To Go Over Vpn Tunnel

Feb 14, 2013

we have a L2L-VPN-Tunnel beetween our Headquarter (ASA5520 with Network 10.100.1.0) and a branch office (Cisco1841 with network 10.100.10.0 ). This works fine for years, but now we wish to change the configuration so that ALL traffic from the branch office goes over the vpn-tunnel. My question: How I have to change the crypto acl to reach this. Below the relevant parts of the branch route.

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Cisco Firewall :: ASA 5520 - Allow Traffic From DMZ To Internet And Block Traffic?

Apr 29, 2012

I have an ASA 5520 with the below config
 
Gi0/0: outside (Internet)
Gi0/1: inside (Internal users)
Gi0/2: DMZ (web servers, ftp, Mail etc..)
 
I have a SMTP relay deployed on the DMZ for mailing. I have also a mail servers installed in the internal lan,
 
I want to allow trafic from dmz to reach internal lan, and i want normally also allow stmp relay from dmz to reach Internet.
 
How can i block trafic from DMZ to reach Internal Lan (instead of smtp) if the to allow trafic from dmz to internet i must put ANY in the policy?
 
For allowing trafic from DMZ to reach Internet, the policy must be DMZ -----> ANY ----->Services., this policy means DMZ can implicity reach Internal Lan?

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Cisco Firewall :: 5520 - VPN Tunnel Not Working Properly?

Jan 11, 2012

I am getting the below  messages in my cisco asa 5520, during this time tunnel is down. just what to check whether the problem is at remote FW or with asa

[code]...

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Cisco Firewall :: 5520 - Remote Access VPN Through A Tunnel?

Oct 17, 2011

I have a site to site VPN between SiteA to SiteB which is working fine. SiteA has an ASA5520 and SiteB Pix501. The ASA5520 is running version 804 with split tunneling. Users connect to SiteA using remote access VPN. Is it possible to setup SiteA ASA5520 so that when users connect to SiteA they can access servers located on SiteB through the tunnel? I know i can setup the Pix501 for remote access VPN but it is located in another country and i don't want to take a chance just incase i lose connectivity.

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Cisco Firewall :: 5520 - SSH Socks Tunnel Set Up On Server

Jul 18, 2012

I have the following setup 
|| Socks Server || >> Switch1 >> ||Cisco 5520 ASA || -->> | Switch 2| -->> Clients
 
I have a SSH SOCKS tunnel set up on the socks server which is a Linux box. When I connect my machine to the switch 2, I am NOT able to receive and mail by setting up a mail client and it seems SOCKS traffic does not reach the socks server. I can however run a telnet command on port 1080 (socks port) which connects  which shows that the port was going through and open. However there was no SOCKS traffic. When I connected the machine to Switch 1, SOCKS traffic worked as expected and I was able to receive mail.

This suggests to me that the ASA has some inherent rule that does not allow SOCKS traffic. IS this true and if so how can I bypass this?

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Cisco VPN :: Monitor Tunnel That Has End Devices ASA 5520 And NetScreen Firewall?

Dec 27, 2011

Monitor a VPN tunnel that has as end devices a Cisco ASA 5520 and a NetScreen Firewall. I'll like to be receive an alert when the VPN is down.

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Cisco Firewall :: ASA 5520 - IPSec Tunnel Without Private Network

Apr 11, 2013

I'm trying to achieve a site-to-site ipsec tunnel to a Cisco ASA 5520.  Most examples feature the ASA with a public interface that terminates the tuennel and a private network on another interface that the tunnel interacts with.  Where my scenario differs is that the interface that accepts the tunnel is part of a public /29 network where I want the remaining hosts on that subnet to be able to route thrugh to the other end of the tunnel.  My tunnel gets established, but any attempts to route via the IP assigned to that one interface result in the ASA rejecting traffic. If so, what configuration options should I consider?

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Cisco Firewall :: Command To Check IPSEC Tunnel On ASA 5520?

Jan 7, 2013

Need to check how many tunnels IPSEC are running over ASA 5520.Tried commands which we use on Routers no luck?

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Cisco Firewall :: ASA 5520 - VPN Traffic Is Getting Dropped Through Firewall

Apr 8, 2011

Our Local Network is behind the CISCO ASA Firewall.Whenever we are accessing to Client VPN server,it is getting connected but after few Minutes (May be 5/10/30 Min),the sessions are terminating. The same traffic through PIX is no issue , only with ASA Firewall. See the following Error and request you give the possible root cause for this.
 
2011-04-09 16:15:09    Local4.Info    172.16.1.68    %ASA-6-302016: Tear down UDP connection 87447908 for OUTSIDE:68.22.26.66/4500 to inside:172.16.9.10/4410 duration 0:27:49 bytes 18653

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Cisco Firewall :: 5520 VPN Traffic Between Interfaces

Jun 12, 2011

Our ASA 5520 firewall is running 8.0(4) IOS.I have an internal L2L VPN terminating on my firewall (from an internal remote site) on ENG interface.With the default "sysopt connection permit-vpn" command enabled, VPN traffic is allowed to bypass the ENG interface acl.The security level on the ENG interface is set at 50.The security level on the destination interface PRODUCTION is set at 40.Inbound VPN traffic bypasses ENG interface acl and since higher-to-lower security level allows VPN traffic to flow freely from ENG to PRODUCTION, it seems the only place to check/filter VPN traffic is an ACL placed on the PRODCTTION interface and set at INBOUND (outbound VPN traffic).

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Cisco Firewall :: Traffic Prioritization On ASA 5520?

Dec 1, 2011

I have a Cisco ASA 5520 (8.0) and I'm trying to figure out how to prioritize traffic to specific websites (by either domain names or IP addresses/ranges).  This document [URL] has some great examples, but I'm not able to create a class-map that will match addresses.  I'm not doing any other traffic manipulation on this ASA. 

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Cisco Firewall :: ASA 5520 - Allow Traffic Between DMZ Servers?

Dec 20, 2011

We can´t reach DMZ servers from other DMZ servers?If I make a ping from DMZ server to another, sometimes only recieve one ping, sometimes 4, sometimes 0.How can I allow the traffic between DMZ servers??
 
(ASA 5520 Version 8.4)

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Cisco Firewall :: 5520 - Traffic From Inside To Outside

Mar 2, 2011

I am setting up a pair of 5520 in A/S mode but the traffic from inside to outside seems blocked somehow.

asa01# sh run : Saved
ASA Version 8.3(1)
host name asa01
enable password LFJ8dTG1HExu/pWQ encrypted
password 2KFQnbNIdI.2KYOU encrypted
names
[code]......

Base on the above configuration, I still cannot ping or HTTP.

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Cisco Firewall :: ASA 5540 - IPSec Tunnel / ASA Refuses To Encrypt Traffic But Decrypts It

May 31, 2012

This has to be the most weirdest issue I have seen since the past year on my ASA. I have an ASA 5540 running the 8.4(2) code without any issues until I stumbled upon this problem last week and I have spent sleepless nights with no resolution! So, take a deep breath and here is a brief description of my setup and the problem:
 
A Simple IPSEC tunnel between my ASA 5540 8.4(2) and a Juniper SSG 140 screen OS 6.3.0r9.0(route based VPN)
 
The tunnel comes up without any issues but the ASA refuses to encrypt the traffic but decrypts it with GLORY! below are some debug outputs, show outputs and a packet tracer output which also has an explanation of my WEIRD NAT issue:  

My setup - ( I wont get into the tunnel encryption details as my tunnel negotiations are **** perfect and comes up right off the bat when the ASA is configured as answer only)
 
CISCO ASA - IPSec networking details
LOCAL NETWORK - 10.2.4.0/28
REMOTE NETWORK - 192.168.171.8/32
JUNIPER SSG 140 - IPSec networking details
PROXY ID: LOCAL NETWORK - 192.168.171.8/32
REMOTE NETWORK - 10.2.4.0/28 
HOST NAME# sh cry ipsec sa peer <JUNIPER SSG PEER>
peer address: <JUNIPER SSG PEER>
[code]... 

As you can see, there is no echo reply packet at all as the packet is not being encapsulated while it is being sent back. I have been going mad with this. Also, this is a live production multi tenant firewall with no issues at all apart from this ****** ip sec tunnel to a juniper!!

Also, the 192.168.10.0/24 is another IP Sec tunnel remote network to this 10.2.4.0/28 network and this IP SEC tunnel has a similar Juniper SSG 140 screen os 6.3.0r9.0 at the remote end and this woks like a charm without any issues, but the 171 is not being encrypted by the ASA at all.

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Cisco Firewall :: ASA 5520 Cannot Block Incoming Traffic

Dec 12, 2012

I was configure 3 interface on ASA1st - managemetn (only for management)2nd - gig0/0 is connected to internet with real IP3rd - gig0/1 is connected to local networkI was configure routed NAT to internet.But I have problem with restriction incomming traffic to inside interface (ifname is inside)but I can connect to ip address of inside interface from other ip. It is wrong and i can't understand where is my mistake.

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Cisco VPN :: 5520 - How Much Traffic Pass Through Into IPSec In ASA Firewall

Mar 20, 2013

How can I see the quantity of traffic that is passing through into an IPSec VPN in a ASA 5520.

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Cisco Firewall :: 5520 Can't Get Traffic From Inside To Internet

Nov 27, 2011

I am trying to make a basic config on my 5520. The first goal is to make trafic from inside to outside.The internet address is 64.28.29.200 and the default internet gw is 64.28.20.193What am I missing since I can not get trafic from inside to the internet? [code]

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Cisco Firewall :: Enabling Outbound Traffic Through ASA 5520 8.4(4)1

Apr 4, 2013

We've got a proyect that requires a few thin clients to connect to a remote PCoIP server.
 
Looking to the documentation, the only port required to be open through Firewalls is TCP/UDP 4172, however, we've seen (making interface captures) that it somehow also uses ESP (IP protocol 50).
 
We've got a static NAT translation translating those thin clients to a public IP address, we've created ACLs to allow inbound (shouldn't be necessary as our user is connecting to a remote server) and outbound traffic for TCP/UDP 4172 and ESP and I cannot make it work.
 
I've also enabled IPSec pass-through Inspection to no avail.
 
how should we configure our ASA to enable this kind of traffic?

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Cisco Firewall :: ASA 5520 - Allow All Traffic From Frame Relay

Jun 14, 2012

I am installing an ASA 5520 and I have a problem on accepring the incoming traffic from an external office connected via Frame Relay.
 
On my OUTSIDE interface I have both the internet traffic and the external office traffic incoming. What comes from the external office is visible as 10.1.0.0/16.
 
I have to allow this traffic to enter the internal network, without any control. I would also keep the original IP address.
 
I have configured the Firewall but I don't know how to setup the NAT.

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Cisco Firewall :: ASA 5520 8.2(1) - Botnet Traffic Filter?

Jun 28, 2011

When I try to configure the Botnet Traffic filter with the commad "dynamic-filter use database" through the ASDM I get the following error message.
 
[ERROR] dynamic-filter use-database  Dynamic Filter: New data file not terminated with newline

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Cisco WAN :: 7201 Option To Send All Traffic Through GRE Tunnel / L2TPV3 Tunnel

Jan 9, 2011

i have a 7201 router with NPE-G2. i have a design which i have the option to send all the traffic through a GRE tunnel or a L2TPV3 tunnel.which method is more CPU consumption ?

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Cisco Firewall :: 5520 To Pass Traffic Through Ssm 20 And To Create Sensors

Jun 20, 2011

I have installed asa 5520 , software ver is 8.4,I have SSM-20 installed in asa 5520. How to pass traffic through this ssm-20 ,how to create sensors,how to update signatures of this IPS module ,is there any procedure to automatically update the signatures .

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Cisco Firewall :: ASA 5520 - Permit Traffic To Inside Via MAC - Address?

Apr 6, 2011

I have a handheld device that will be used for inventory outside of our office. It has 3g capabilities. Is there anyway I can permit traffic from this device from the outside world coming into my network?  I need to open a couple of ports so it can hit the server. But I have no intention to open these ports up to the entire world.  I use an ASA 5520 with a managed router from our provider. I looked around on the Cisco site and the only information I found was for permitting and denying traffic from devices that are within the network.

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Cisco Firewall :: Command To Check ASA 5520 Is Passing Traffic

May 14, 2012

how can i check that ASA is passing traffic? Also what command we can use to make sure VPN is working fine.

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Cisco Firewall :: ASA 5520 - Traffic From DMZ And WAN Forwarded To Object Production

Sep 26, 2011

i have an ASA 5520 8.4(1) with following config
 
interface GigabitEthernet0/0
nameif WAN
security-level 0
ip address 216.52.185.33 255.255.255.240 standby 216.52.185.34
!

i need traffic (port 9350) from DMZ and WAN forwarded to object Production_23 port 3389, how do i achieve this ?

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Cisco Firewall :: Traffic Shaping Per Users / Ip / Application Using ASA 5520

Apr 5, 2011

I hava Cisco ASA 5520 with AIP-SSM module. I would like to have the below features with ASA installed in Transparent mode.
 
1. Traffic shapping per user
 
2.  Traffic shapping per IP subnet
 
3.  Traffic shapping per Application
 
Is it possible with ASA installed in Transparent mode?

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Cisco Firewall :: ASA 5520 Inbound Traffic On Backup ISP Connection

Nov 3, 2011

I have a client that has an ASA 5520 that has two internet connections, FIOS and Comcast.  The ASA is configured to failover from the FIOS to the Comcast if the FIOS fails.  This works perfectly fine.  However, I was wondering if VPN and other inbound traffic will come into the secondary connection when it is active.  I think VPN will work inbound when the FIOS connection fails, but I am not sure about the other inbound connections. 

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Cisco Firewall :: Force ASA 5520 Traffic Out Specific Interface

Jun 1, 2011

I'm trying to route all default traffic from my production environment through my ASA 5520 on the "outside2" interface.The 5520 has a site to site VPN to our DR site on the "outside/inside" interfaces via one ISP. On another ISP, interfaces "outside2/inside2" go to the internet.
When I make my 3750 stack default route for the inside2 interface IP I cannot get to the internet. When it is pointed to the inside interface on my 5505, I can.
 
I get the following errors when I try to open google.com from a production server:Why is the 5520 trying to use the "outside" interface instead of the "outside2" interface to go out?

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Cisco Firewall :: 5520 / 4510 - ASA Is Blocking For Returning Traffic

Apr 2, 2012

My internet link is connected on Internet Router & below downwards Cisco ASA 5520 is connected.ASA is connected with core switch cisco 4510 on downwards. our web based mail [URL] is hosted outside.

Lets suppose ISP pool is 4.4.4.0/28.suppose owa server is Static natted on ASA with 4.4.4.4. my machine traffic is going to internet with same ISP with PAT on Cisco ASA & internet is working on my machine. if i want to access {URL} or ip base for mail access, its not working & also it is not pinging. i suppose to ASA is blocking for returning traffic.
 
is there any way to traffic will go via same Firewall & comeback on same firewall port?

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