How do I stop outside telnet to port 25 of a mail server. I am trying to prevent anyone from telnetting from outside and run the commands that mailguard does not block, ie. HELO ME, MAIL TO, RCPT TO, etc. Of course denying inbound telnet to the gate...

I have a set of pix 525's set up as primary and failover. The IOS is 6.1.1. Recently the DMZ interface started to behave strangely. After the arp cache times out, the mac address of the router on the DMZ interface is not being learnt. From the PIX, I...

I have a cat 4006 connected to a PIX 525 on the DMZ interface. the PIX is running IOS vers 6.1. The 4000 is running cat os 5.5.(10) at layer 2 and IOS version 12.0(14)W5(20) on the router card (WS-X4232-L3). For the past three days I've been noticin...

I have 2 PIX 525 unrestricted bundle. Everytime I type wr mem in the pix it slows down tremendously. I have a continuous ping going from a device on the directly connected internal network. As soon as I do wr mem the ping round trip goes from under...

Hello,What does this output mean when I do show int on a pix 525: input queue (curr/max blocks): hardware (128/128) software (0/4) output queue (curr/max blocks): hardware (0/11) software (0/10)I understand that this refers to the currently u...