Network Security

After installing a PIX 501 Firewall at a client, they are complaining that when they send e-mail from Outlook Express 6 that a message displays for 30 - 60 seconds stating that is Connecting to the Server. The e-mail does send correctly after this de...

Hi,Is it possible to set the MTU for a PIX Ethernet interface to a value greater than 1500 ?I know that it will allow me to do it in the PIX software but the documentation says that the Max. Value is 1500 for Ethernet Interfaces ?Which one is True ? ...

hello,i have a pix 520, and when he start, he do some checkings , fire a error, and restart. If i boot from a floppy, he say that flash is obsolete, can i do something???here are the outputs:Finesse Bios V3.3Booting Floppy...............................

Hi,When i attempt to upgrade the PIX Software, on my "PIX Classic Firewall"i get the below error. Do i need to change any Dip switch settings on the Flash card (ISA)?I get the below error when i boot of the boothelper disk.I have a 2MB Flash card. I ...

I'm trying to figure out what is the best way to do span port on my core switch:This is my scenario: | | F/W (Active) ---------- F/W (Standby) | | Coreswitch1 ---------- Coreswitch2If I configure span source port and span destination port on my cores...

Hi,my costumer´s Internet Firewall between inside, outside and DMZ networks is a Linux running Iptables. Well, his Proxy Server is installed in DMZ network and his inside workstations access webpages passing through this proxy. This access is carried...

Our PIX has extremely high CPU usage, mostly 99%, with lots of interface overruns. Is there a way to track what is causing such high CPU usage. We have a VPN tunnel running between the sites as well. For that very reason, it keeps locking up every no...

Hi I have got a PIX 520 that I cannot seem to get working.The following message is displayed. Any ideas what the cause could be.Cisco Secure PIX Firewall Version 5.3(2)open(ffsdev/2/read) failedAn internal error occurred. Specifically, a programming ...

I know VPN 3k boxes talk directly to RSA server without the need for a proxy device but I am not sure about PIX running v6.3.Thank you

What's the difference between Attack and Info policies with the PIX IDS feature? It looks like the same global signatures are used for each one, so why have two policies if they both do the same thing?It would be nice to enable or disable different s...

We really need some help! We have tried everything to get streaming audio and video stooped on our new PIX units to no avail. We looked through these forums and found the following conversation thread http://forum.cisco.com/eforum/servlet/NetProf?pag...

and the users get "remote peer not resonding". But when using dial-up connection, they get through. What could be wrong? We are using Cisco VPN Client ver 4.0(rel), PIX Firewall version 6.2(1) and PDM 2.0(1). I'm a new to the PIX 501, so I need help!...

Hello,I'm sending part of my PIX configuration (ver 6.3(1)) .Users from Inside the Network (secure ) can't able to access the Internet through PIX where as if they are directly connected to Router byepassing PIX , they can . From PIX , I can able to ...

I don't know how to fix the problem of DNS not working through the PIX firewall. We have an internal DNS server and our ISP hosts external DNS servers. Would this work? Apply an ACL on the Inside interface that looks like:access-list 101 permit tcp 1...