Cisco Firewall :: ASA5520 -CSC SSM (Trend Micro) / Browse Internet Slow

Nov 10, 2012

I recently deployed this module on Cisco ASA 5520 (v8.2.5) at a client's place. I'm having problems. Even if there's 1 user, browsing Internet is super slow. If I were to bypass the CSC SSM (for 10 users) module by removing the "service-policy TEST interface inside" command, browsing Internet is very fast. Based on my troubleshooting, if I were to disable Web Filtering, Web Reputation and URL Blocking & Filtering, and leave all other services enabled, then the browsing is fast. how come I enable the 3 services stated above and browsing the Internet is slow, even for 1 LAN user. I don't have any thing configured under these 3 services. Just by enabling the services alone, it's already slow. It doesn't make sense for Cisco to sell such an expensive product and it can't even handle 1 user with no settings but services enabled.

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Cisco Firewall :: 2911 - IOS Content Filtering Using Trend Micro

Apr 26, 2012

I have IOS content filtering using the Trend Micro subscription service working on a 2911 running 15.1.(3)T3 with the security license option and a 30 day demo Trend subscription. Once I figured out that the content filtering for Trend appears to be completely broken in 15.2 (even using docs for 15.2) I went back to 15.1 and it works great.
 
Everything seems great so far except I would like to have a more 'fancy' or custom blocked page where a user can have a couple links to either go to the trend micro reporting page [URL] or some other page, and maybe some branding so they know the page is coming from our network and is not some fake security thing or phishing attempt or whatever.
 
I know I can use the 'parameter-map type urlf policy trend ' section to do a tiny bit of customization of the text that appears on the default blocked page display and there is an option for it to go to a simple redirect instead ('block-page redirect -url') but how to do more with either the built in page or the redirect- url to keep the information of what page the user was trying to access and why it was blocked (category etc.) while adding more features.
 
Oh, one last thing, this doesn't support any kind of 'user override' or anything like that does it? So that a network can have a filter applied but an admin could override the filtering to allow temporary access to something?

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May 8, 2011

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Jun 8, 2011

I have installed CSC-SSM-10 on cisco ASA 5520.I am facing two problems

1 : When I send traffic from ASA to SSM module then internet connection becomes slow and sometimes internet session disconnected.
2. When I try to manual update then following erros shows please see attachment .

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Feb 14, 2013

I have installed ASA 5510 to limit sessions of Users to 170. But as soon as i put it infront of network before router, Internet goes down and i cannot browse or something.
 
The network is simple, Cisco three layer model with users on Wired LAN/Wireless LAN using WLC. Approx 2500-3000 users.
 
[code]...

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Sep 25, 2011

I have a asa5520 with five Internet IP.One for the internet interface and the others are static maped to dmz hosts. It runs rightly until yesterday.Now it will lose the connection to the gateway many times everyday and the dmz hosts can not connect to internet any time. configuration(simplified):
 
!
interface GigabitEthernet0/0
nameif internet
security-level 0

[Code]....

I called ISP to check,when ISP clear their router's ARP, the asa will lose the connection at the same time and then the ISP's router couldn't learn the ASA's MAC. After I 'clear arp' manually,The ISP's router can learn the ASA's MAC and the connection recovered,but the DMZ's cann't access internet still (of course,There is no problem between DMZ and ASA ,I ping the internet gateway from DMZ host and can not get any reply.).

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May 31, 2011

Our firewall expert has gone off on long term illness leave and I am trying to pick up the pieces :-(
 
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May 11, 2010

Recently installed an ASA5505 for a client.  They have Verizon DSL (7mb down, 384up package).  So my config is Verizon (Westell) DSL modem connected to e0/0 (VLAN2) of ASA.  From there I have e0/1 (VLAN1) connected to a 3COM 2250 Plus 50 port switch.
 
Since installing the ASA client has been complaining of a major slow down in Internet speed.  Contacted ISP and they had me remove the firewall from the equation and hook modem directly to laptop.  With this setup I get between 6-7mb download speeds.  When I put the ASA back into the mix though, the speed drops significantly.  The speed will varry but 90% of the time they do not even get 1mb download speeds.
 
The configuration is pretty straight forward, not doing a whole lot with the box other then using it for VPN (IPSEC).

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Cisco Firewall :: Internet Speeds Slow Behind ASA 5520?

Jan 17, 2012

I have two 5520s in a failover configuration. When browsing the internet behind them the speeds average 0.5Mb/1.0Mb Download/Upload. When bypassing the ASAs the speeds increase to 4Mb/6Mb. I have checked the interfaces on the ASAs and there are no errors, collisions, drops, etc.

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Cisco Firewall :: Slow Internet Connection Behind ASA 5510 IOS 8.2?

Jan 28, 2012

we have installed an asa 5510 with 3 interfaces : dmz (web server 172.20.0.59;application server 172.20.0.58; server mail 172.20.0.157), inside (lan) and outside (connected to a router for internet connexion). the problem is that the connexion internet is slow in the inside (lan). our dns is in the ouside with ip address x.x.x.60 ( the dns have translated addresse to inside and dmz 172.20.0.60). the router connected to our IPS have x.x.x.33 (our default gateway for internet). there is a simple switch between firewall and router. the inside interface of the asa is connected to catalyst cisco 6509 (the interface gigabit of the 6509 is configured to auto speed and duplex).  the asa have base lisence.here is the configuration of the asa and the output of commandes show interfaces (inside, outside), show asp drop , show perform.

firewall# show run
ASA Version 8.2(1)
!
hostname firewall
domain-name xxx.xx
enable password dgft12ghkHKM123Z encrypted
passwd dgft12ghkHKM123Z encrypted
names

[code]...

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Mar 11, 2013

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May 1, 2012

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Jul 4, 2012

We are using ASA 5510 with internet link of 40 MB. we are facing issue of slow download speed. we have done all basic troubleshootings like: fixed duplex full on interfaces, checked CRC reeors on interfaces.
 
we are using around 40 L2L VPN tunnels on same ASA.

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Jan 16, 2012

We have an ASA 5510 and are experiencing unbelievably slow speeds.  I noticed a problem last Thursday with users complaining of slow speeds and realized our interface had a ton of errors and was running at half duplex.  I contacted the ISP (we are connected to their 3750) and they swore up and down they were set to full.  So they had me switch to full and the interface shut down.  I asked them to switch to auto and the interface came back up and we went to full, and of course the errors and colisions stopped.  However the errors and packet drops have not stopped.  The ISP sent out a technician and they determined it wasn't a problem on their end by plugging in a laptop and testing the speed--that worked fine.  Eventually I plugged in a Sonicwall and bypassed the ASA completely and that worked fine.  We plugged the ASA back in and we we went back to dropping packets.  I put an old config on the ASA and oddly enough it seemed to have fixed the problem but we were still dropping packets.  So I put the most recent config back on and that worked fine up until today.  We're back in the some boat we were last week.  So my first question is when I do a show int and see packets dropped - is that normal because of ACLs etc, or would that be show in another place?  Here's an output of show int and show asp drop:
 
HQ-ASA# show asp drop
Frame drop:  Flow is denied by configured rule (acl-drop)                              3366  NAT-T keepalive message (natt-keepalive)                                   423  First TCP packet not SYN (tcp-not-syn)                                     406  TCP failed 3 way handshake (tcp-3whs-failed)                               135  TCP RST/FIN out of order (tcp-rstfin-ooo)                                  462  TCP SYNACK on established conn (tcp-synack-ooo)                             46  TCP packet SEQ past window (tcp-seq-past-win)                               50  TCP invalid ACK (tcp-invalid-ack)                                            9  TCP Out-of-Order packet buffer full (tcp-buffer-full)                       29  TCP Out-of-Order packet buffer timeout (tcp-buffer-

[code]....
 
I have not made any configuration changes to the ASA ina  couple of months.  The interface counters were cleared about 45 minutes ago if that's how quickly the errors/packet drops are adding up.

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Aug 23, 2012

Our internet connection is connected to an ASA. The download speed is ok but the upload is very slow. we have been running some speed test from our LAN, and have been also trying to upload/download file.
 
Our ASA also have the IPS module. I turned this off but we've got the same result.
 
I send here attach the configuration file of the ASA.

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Dec 22, 2011

With regarding to the firewall ASA5520, i'm using it in my network, all the confiuration are properly configured and working but with the use of proxy address in internet explorer(e.:206.53.155.129/3128) all the blocked contents as easily accessible simply it bypass all the network through firewall.so will u guide me to block the proxy servers.

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Apr 20, 2013

Port forwarding done to a DMZ located server on the cisco ASA 5520. Now this host cannot browse but allowed outside to inside access is possible Is there anyway i can give this system to browse internet? may be through the natted IP ( 94.20.*.*)

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Mar 8, 2013

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Dec 21, 2011

Have a pair of 2960's in a stack, one port(trunk) connects to another DC and we are seeing ~5% packet-loss and large output drops to this DC.

#sh interfaces gigabitEthernet 1/0/17 counters errors

Port        Align-Err     FCS-Err    Xmit-Err     Rcv-Err  UnderSize  OutDiscards
Gi1/0/17            0           0           0           0          0       182867
GigabitEthernet1/0/17 is up, line protocol is up (connected)
  Hardware is Gigabit Ethernet, address is a0cf.5b87.ec11 (bia a0cf.5b87.ec11)
  Description: QinQ_to_DC2

[code]....

As you can see, 30sec rate isnt excessive, but as the drops are outdiscards it would appear we are getting hit by the small buffers/microburst issue.
 
 Gi1/0/17 is mapped to asic 0/20
Gi1/0/17  17   17   17   0/20 1    17   17   local     Yes     Yes

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Nov 13, 2012

I am working on a friends vista machine and I cannot browse the web internet is connected I can ping say 8.8.8.8 and get a reply but if I ping (url)it say its unreachable. I have reset winsock and the tcpip stack stopped and started the DNS service tried manually entering DNS servers and no luck.

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May 19, 2011

I just installed a new ASA 5505 for an office with three internal subnets.  The three networks can each get online fine and ping eachother, but cannot browse to shares on the two internal networks other than their own.  How do I configure the ASA to allow all traffic between these three inside networks?
 
192.168.152.0
192.168.152.0
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[code]....

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Feb 1, 2013

From home I would like to browse my intranet at work where I have a Linux box, which I will call "W", i.e. url...My router at home closes port 22 but maps port 2222 to port 22 on my server "S" which resolves to mydomain.org.

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May 12, 2011

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Sep 30, 2011

We usually connect to a remote server through VPN connection. Nowadays we are unable to browse internet after we estabilish VPN connection. I searched many forums and site and got a temporary solution Go go properties of VPN connection - click on networking tab - properties of IPv4/ IPv6 - go to advanced - in ipsettings tab - uncheck "use default gateway on remote network"

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Apr 14, 2011

I have no virus/malware (malwarebites) that i can find. All of the firewall's i know of are off and all antivirus software.I Have a desktop computer with Windows XP Pro. I have Cable internet and I am connected through a modem > router > computer.I will copy & paste (from flash drive) onto here the following commands as i have seen numerous requests for this information on other inquiry's that i have read.

[code]....

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Apr 23, 2012

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Apr 5, 2012

My laptop power cord failed and replacing it is beyond my current budget so must get my old desktop up. I've got it connected but it won't surf the web. Says excellent connection.... But no connection seems evident if I try to go online.

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Aug 22, 2011

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Jan 18, 2013

i'm having difficulties with my internet connection.. My internet is plugged in and it says it works. But I can't browse any websites, it's like i didn't have internet. I can play online games, i can go on steam and talk or play online and I could ping in cmd as well. I'm running window 7 64bit.

I have already trying to fix with :

1) reset tcp/ip with netsh thing

2) flush dns

3) uncheck proxy in internet explorer

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5) trying to connected in safe mode with networking but still fail.
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Feb 11, 2012

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