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Thread View: alt.certification.cisco
3 messages
3 total messages Started by jamesp010 Wed, 23 Nov 2005 02:31
Cisco 501
#36
Author: jamesp010
Date: Wed, 23 Nov 2005 02:31
63 lines
3253 bytes
Hi,

I have a static IP address from my ISP. I also have a router with a
built in Modem so I plug the router into the telephone line. If I make
a direct connection from my router to my PC with the following
addresses on my PC everything works fine, I get a connection to the
internet (can view webpages):

IP: 194.97.248.40
Subnet: 255.255.255.250
Default Gateway: 194.97.248.39

Preferred DNS : 193.167.64.5
Alternate DNS : 194.97.230.30

As soon as I connect my Cisco 501 PIX in between the PC and the router,
I don't get any internet connection. Here are the steps I am
following to configure the firewall, so please guide me where I am
going wrong:

I start the PDM by going to https://192.168.1.1/startup.html

Once started and authenticated get the Basic Configuration and I leave
the default values ( PIX Host Name = pixfirewall, Domain Name:
ciscopix.com)

On the next page "Outside Interface Configuration" I leave the
"Speed to Auto" and I select "static IP address" and input the
following details IP 194.97.248.40, Subnet Mask: 255.255.255.250 and
Default Gateway: 194.97.248.39

On the next page I leave the remote VPN page empty

On the next page I also leave the Auto update Configuration empty

On the next page "Other Interfaces Configuration I can see the Inside
and outside interface settings and the inside has a security level of
100 and the outside has 0.

On the next page "NAT and PAT Configuration" I select "do not
translate any addresses.

On the next page I disable the DHCP because I can allocate a specific
IP for the PC connecting to the Firewall.

After applying all these setting and saving them. I specify TCP/IP for
my PC with the following addresses:

IP: 192.168.1.10
Subnet Mask: 255.255.255.0
Default Gateway : 192.168.1.1

I try to connect to the internet but I will not let me connect. For
some reason Skype is able to connect which is quite strange.

Do I need to configure anything more? Why does it not allow me to
connect to the internet?

When I remove the firewall I am getting a connection. Please can you
guide me?

Thank you,
James
Re: Cisco 501
#37
Author: mike jones
Date: Wed, 23 Nov 2005 05:20
67 lines
3405 bytes
i think u need to enable nat translation
<jamesp010@hotmail.com> wrote in message 
news:1132713089.786255.141300@g44g2000cwa.googlegroups.com...
> Hi,
>
> I have a static IP address from my ISP. I also have a router with a
> built in Modem so I plug the router into the telephone line. If I make
> a direct connection from my router to my PC with the following
> addresses on my PC everything works fine, I get a connection to the
> internet (can view webpages):
>
> IP: 194.97.248.40
> Subnet: 255.255.255.250
> Default Gateway: 194.97.248.39
>
> Preferred DNS : 193.167.64.5
> Alternate DNS : 194.97.230.30
>
> As soon as I connect my Cisco 501 PIX in between the PC and the router,
> I don't get any internet connection. Here are the steps I am
> following to configure the firewall, so please guide me where I am
> going wrong:
>
> I start the PDM by going to https://192.168.1.1/startup.html
>
> Once started and authenticated get the Basic Configuration and I leave
> the default values ( PIX Host Name = pixfirewall, Domain Name:
> ciscopix.com)
>
> On the next page "Outside Interface Configuration" I leave the
> "Speed to Auto" and I select "static IP address" and input the
> following details IP 194.97.248.40, Subnet Mask: 255.255.255.250 and
> Default Gateway: 194.97.248.39
>
> On the next page I leave the remote VPN page empty
>
> On the next page I also leave the Auto update Configuration empty
>
> On the next page "Other Interfaces Configuration I can see the Inside
> and outside interface settings and the inside has a security level of
> 100 and the outside has 0.
>
> On the next page "NAT and PAT Configuration" I select "do not
> translate any addresses.
>
> On the next page I disable the DHCP because I can allocate a specific
> IP for the PC connecting to the Firewall.
>
> After applying all these setting and saving them. I specify TCP/IP for
> my PC with the following addresses:
>
> IP: 192.168.1.10
> Subnet Mask: 255.255.255.0
> Default Gateway : 192.168.1.1
>
> I try to connect to the internet but I will not let me connect. For
> some reason Skype is able to connect which is quite strange.
>
> Do I need to configure anything more? Why does it not allow me to
> connect to the internet?
>
> When I remove the firewall I am getting a connection. Please can you
> guide me?
>
> Thank you,
> James
> 
Re: Cisco 501
#38
Author: Dennis Willson
Date: Wed, 23 Nov 2005 19:02
84 lines
4357 bytes
I think you're right.... He needs NAT.

James:
If the Internet address is 194.97.248.40 and your PC address is 192.168.1.10 what about that makes you think you don't need address 
translation? Without translation the PIX will send out the address 192.168.1.10 to the Internet and that's NOT your Internet address 
(194.97.248.40 is) so you could never get a response, and changes are your provider won't allow that outbound anyway.

Dennis




mike jones wrote:
> i think u need to enable nat translation
> <jamesp010@hotmail.com> wrote in message 
> news:1132713089.786255.141300@g44g2000cwa.googlegroups.com...
> 
>>Hi,
>>
>>I have a static IP address from my ISP. I also have a router with a
>>built in Modem so I plug the router into the telephone line. If I make
>>a direct connection from my router to my PC with the following
>>addresses on my PC everything works fine, I get a connection to the
>>internet (can view webpages):
>>
>>IP: 194.97.248.40
>>Subnet: 255.255.255.250
>>Default Gateway: 194.97.248.39
>>
>>Preferred DNS : 193.167.64.5
>>Alternate DNS : 194.97.230.30
>>
>>As soon as I connect my Cisco 501 PIX in between the PC and the router,
>>I don't get any internet connection. Here are the steps I am
>>following to configure the firewall, so please guide me where I am
>>going wrong:
>>
>>I start the PDM by going to https://192.168.1.1/startup.html
>>
>>Once started and authenticated get the Basic Configuration and I leave
>>the default values ( PIX Host Name = pixfirewall, Domain Name:
>>ciscopix.com)
>>
>>On the next page "Outside Interface Configuration" I leave the
>>"Speed to Auto" and I select "static IP address" and input the
>>following details IP 194.97.248.40, Subnet Mask: 255.255.255.250 and
>>Default Gateway: 194.97.248.39
>>
>>On the next page I leave the remote VPN page empty
>>
>>On the next page I also leave the Auto update Configuration empty
>>
>>On the next page "Other Interfaces Configuration I can see the Inside
>>and outside interface settings and the inside has a security level of
>>100 and the outside has 0.
>>
>>On the next page "NAT and PAT Configuration" I select "do not
>>translate any addresses.
>>
>>On the next page I disable the DHCP because I can allocate a specific
>>IP for the PC connecting to the Firewall.
>>
>>After applying all these setting and saving them. I specify TCP/IP for
>>my PC with the following addresses:
>>
>>IP: 192.168.1.10
>>Subnet Mask: 255.255.255.0
>>Default Gateway : 192.168.1.1
>>
>>I try to connect to the internet but I will not let me connect. For
>>some reason Skype is able to connect which is quite strange.
>>
>>Do I need to configure anything more? Why does it not allow me to
>>connect to the internet?
>>
>>When I remove the firewall I am getting a connection. Please can you
>>guide me?
>>
>>Thank you,
>>James
>>
> 
> 
> 
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