[c-nsp] Pix DSL problem

Wed Oct 20 11:57:49 EDT 2004

Yes, I've tried this and it works.

If I plug my laptop into the DSL modem it gets an IP and shows the default
gateway as the same IP and it works OK. If I then plug the pix in, It gets
an IP and gateway as the same IP (i.e. the outside interface) but no joy. I
found a default gateway in the ADSL modem log and configured this manually
on the pix and this worked also. 

I don't know why the Gateway doesn't get forwarded or why the Pix doesn't
work using it's outside interface as the gateway.

-----Original Message-----
From: Likely, Thomas [mailto:Thomas.Likely at concerto.com] 
Sent: 20 October 2004 16:48
To: Baker Gareth
Subject: RE: [c-nsp] Pix DSL problem

Have you tried removing the "setroute" piece and manually configuring the
default route?  If that works then I would say that the DHCP information you
are getting from your ISP is incorrect for the default route. 

-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net
[mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Baker Gareth
Sent: Wednesday, October 20, 2004 10:35 AM
To: 'cisco-nsp at puck.nether.net'
Subject: RE: [c-nsp] Pix DSL problem

Josh, I tried the out of the box config, thus:

PIX Version 6.3(3)
interface ethernet0 auto
interface ethernet1 100full
nameif ethernet0 outside security0
nameif ethernet1 inside security100
enable password [removed] encrypted
passwd [removed] encrypted
hostname pixfirewall
fixup protocol dns maximum-length 512
fixup protocol ftp 21
fixup protocol h323 h225 1720
fixup protocol h323 ras 1718-1719
fixup protocol http 80
fixup protocol rsh 514
fixup protocol rtsp 554
fixup protocol sip 5060
fixup protocol sip udp 5060
fixup protocol skinny 2000
fixup protocol smtp 25
fixup protocol sqlnet 1521
fixup protocol tftp 69
names
pager lines 24
mtu outside 1500
mtu inside 1500
ip address outside dhcp setroute
ip address inside 192.168.1.1 255.255.255.0 ip audit info action alarm ip
audit attack action alarm pdm logging informational 100 pdm history enable
arp timeout 14400 global (outside) 1 interface nat (inside) 1 0.0.0.0
0.0.0.0 0 0 timeout xlate 0:05:00 timeout conn 1:00:00 half-closed 0:10:00
udp 0:02:00 rpc 0:10:00 h225 1:00:00 timeout h323 0:05:00 mgcp 0:05:00 sip
0:30:00 sip_media 0:02:00 timeout uauth 0:05:00 absolute aaa-server TACACS+
protocol tacacs+ aaa-server RADIUS protocol radius aaa-server LOCAL protocol
local http server enable http 192.168.1.0 255.255.255.0 inside no
snmp-server location no snmp-server contact snmp-server community public no
snmp-server enable traps floodguard enable telnet timeout 5 ssh timeout 5
console timeout 0 dhcpd address 192.168.1.2-192.168.1.33 inside dhcpd lease
3600 dhcpd ping_timeout 750 dhcpd auto_config outside dhcpd enable inside
terminal width 80

-----Original Message-----
From: Josh Duffek [mailto:consultantjd16 at ridemetro.org]
Sent: 20 October 2004 16:07
To: Baker Gareth; cisco-nsp at puck.nether.net
Subject: RE: [c-nsp] Pix DSL problem

Need to see the config.

josh duffek    network engineer
consultantjd16 at ridemetro.org
desk:              713-739-4849
mobile:            713-291-2365

> -----Original Message-----
> From: cisco-nsp-bounces at puck.nether.net [mailto:cisco-nsp- 
> bounces at puck.nether.net] On Behalf Of Baker Gareth
> Sent: Wednesday, October 20, 2004 9:49 AM
> To: 'cisco-nsp at puck.nether.net'
> Subject: [c-nsp] Pix DSL problem
> 
> Hi
> 
> I'm having problems getting a Pix 501 to work over DSL.
> 
> I'm using a Dlink DSL 300T Adsl Modem connected to the Pix's outside 
> interface. The DSL connection is using Dynamic IP allocation and the
PIX
> is
> setup to use 'outside interface dhcp setroute'.
> 
> The 501 comes pre-configured to work in this setup. I see it get an IP 
> address and a 'show route' reveals that it successfully receives an IP
and
> the default route is the outside interface. But no traffic gets to the 
> outside interface (I did a debug packet outside and never saw any
traffic
> from an internal PC)
> 
> If I manually configure the dynamic IP to the outside interface & give
a
> default route as listed in the log on the DSL modem it works fine. The 
> problem seems to be related to the Gateway and the way this is passed
via
> DHCP.
> 
> I've done a bit of digging and this seems to be an accepted practise
using
> a
> Pix 501 with DHCP on the outside through DSL modem.
> 
> Anyone any ideas?
> 
> 
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-----Original Message-----
From: Josh Duffek [mailto:consultantjd16 at ridemetro.org] 
Sent: 20 October 2004 16:07
To: Baker Gareth; cisco-nsp at puck.nether.net
Subject: RE: [c-nsp] Pix DSL problem

Need to see the config.

josh duffek    network engineer
consultantjd16 at ridemetro.org
desk:              713-739-4849
mobile:            713-291-2365

> -----Original Message-----
> From: cisco-nsp-bounces at puck.nether.net [mailto:cisco-nsp-
> bounces at puck.nether.net] On Behalf Of Baker Gareth
> Sent: Wednesday, October 20, 2004 9:49 AM
> To: 'cisco-nsp at puck.nether.net'
> Subject: [c-nsp] Pix DSL problem
> 
> Hi
> 
> I'm having problems getting a Pix 501 to work over DSL.
> 
> I'm using a Dlink DSL 300T Adsl Modem connected to the Pix's outside
> interface. The DSL connection is using Dynamic IP allocation and the
PIX
> is
> setup to use 'outside interface dhcp setroute'.
> 
> The 501 comes pre-configured to work in this setup. I see it get an IP

> address and a 'show route' reveals that it successfully receives an IP
and
> the default route is the outside interface. But no traffic gets to the

> outside interface (I did a debug packet outside and never saw any
traffic
> from an internal PC)
> 
> If I manually configure the dynamic IP to the outside interface & give
a
> default route as listed in the log on the DSL modem it works fine. The

> problem seems to be related to the Gateway and the way this is passed
via
> DHCP.
> 
> I've done a bit of digging and this seems to be an accepted practise
using
> a
> Pix 501 with DHCP on the outside through DSL modem.
> 
> Anyone any ideas?
> 
> 
> **********************************************************************
> This email and any files transmitted with it are confidential and
> intended solely for the use of the individual or entity to whom they 
> are addressed. If you have received this email in error please notify 
> the system manager.
> 
> This footnote also confirms that this email message has been swept by
> MIMEsweeper for the presence of computer viruses.
> 
> www.mimesweeper.com
> **********************************************************************
> 
> _______________________________________________
> cisco-nsp mailing list  cisco-nsp at puck.nether.net
> https://puck.nether.net/mailman/listinfo/cisco-nsp
> archive at http://puck.nether.net/pipermail/cisco-nsp/
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