[cisco-voip] Internet IP phone connect through PIX Firewall

Sun Sep 10 09:28:38 EDT 2006

Manoj,

Are you doing NAT on your PIX?  If so, you will need special CM+PIX  
config.

phones download SEP<mac>.cnf.xml from TFTP server.  Inside this XML  
file is a listing of which CM servers the phone should register to  
using SCCP.  This file also tells the phone what TCP port to use for  
the SCCP communication.  The CM servers are listed in this by name or  
IP address based on how your CM is configured under system->server.

For NAT traversal, your CM will have to be configured using host  
names.  Your PIX will have to do DNS fixup.  Your phone will receive  
the name cm1.manoj.com.  the phone must do DNS lookup on this and  
receive the external address of your CM server.

Otherwise, you must use a valid internet address for the IP of your  
CM server.

/Wes
On Sep 9, 2006, at 3:41 PM, Stu Packett wrote:

Sorry, I have never tried without the VPN.  I thought best practice  
was to use the VPN because it was not advised to put the CCM on the  
public internet.  If you do get your config working, I'd like to get  
a copy of your config just for reference.  Thanks.

From: Manoj Kalpage [mailto:manoj.kalpage at gmail.com]
Sent: Saturday, September 09, 2006 12:20 AM
To: Stu Packett
Cc: cisco-voip at puck.nether.net
Subject: Re: [cisco-voip] Internet IP phone connect through PIX Firewall

Stu,
Thank you for the reply, I use windows 2003 DHCP server for my phones  
in LAN but I can get my outside phone connect to CCM through  
internet. Do you have IP phones connect to your CCM through internet  
without using VPN?

Thanks,
Manoj

On 9/9/06, Stu Packett <SPackett at fenwick.com> wrote:
Manoj:
Is your PIX giving out DHCP addresses?  On my PIX 501, I have it  
setup as a DHCP server and these are my DHCP commands:

dhcpd address xxx.xxx.xxx.xxx
dhcpd dns xxx.xxx.xxx.xxx xxx.xxx.xxx.xxx
dhcpd wins xxx.xxx.xxx.xxx xxx.xxx.xxx.xxx
dhcpd lease 36000
dhcpd ping_timeout 750
dhcpd domain internaldomain.com
dhcpd option 150 ip xxx.xxx.xxx.xxx <--TFTP address
dhcpd enable inside

From: cisco-voip-bounces at puck.nether.net [mailto: cisco-voip- 
bounces at puck.nether.net] On Behalf Of Manoj Kalpage
Sent: Friday, September 08, 2006 4:18 AM
To: cisco-voip at puck.nether.net
Subject: [cisco-voip] Internet IP phone connect through PIX Firewall

Hi All,
Does any one has configured PIX firewall to connect internet IP  
phones to Call Manager. I have configure firewall to open all the  
port which CCM need but still no luck. Bellow is the config of my  
PIX. Am i missing anything?

Here is the link I refered to open the TCP and UDP Ports

http://www.cisco.com/application/pdf/en/us/guest/products/ps5820/ 
c1693/ccmigration_09186a0080536eae.pdf

Thank you in advance.
Manoj

:
PIX Version 6.3(5)
interface ethernet0 auto
interface ethernet1 auto
nameif ethernet0 outside security0
nameif ethernet1 inside security100
enable password u2zabJUOK.TTL3K1 encrypted
passwd 1P5CrRl.dL8Oe4k2 encrypted
hostname PBXLPIX01
domain-name pbxl.jp
clock timezone JST 9
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 pptp 1723
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 snmp 161
fixup protocol sqlnet 1521
fixup protocol tftp 69
names
object-group service outbound-tcp tcp
   port-object eq www
   port-object eq https
   port-object eq smtp
   port-object eq ftp
   port-object eq pop3
   port-object eq imap4
   port-object eq domain
   port-object eq 123
   port-object eq ssh
   port-object eq citrix-ica
object-group service outbound-udp udp
   port-object eq domain
   port-object eq ntp
object-group service mail-inbound tcp
   port-object eq www
   port-object eq https
   port-object eq smtp
object-group service VoIP-udp udp
   port-object range 16384 32768
   port-object eq tftp
object-group service VoIP-tcp tcp
   port-object eq 3804
   port-object eq 2443
   port-object eq 2000
   port-object eq www
   port-object eq 69
   port-object eq https
access-list 102 permit tcp 172.16.0.0 255.255.0.0 any object-group  
VoIP-tcp
access-list 102 permit udp 172.16.0.0 255.255.0.0 any object-group  
VoIP-udp
access-list 102 permit tcp 172.16.0.0 255.255.0.0 any object-group  
outbound-tcp
access-list 102 permit udp 172.16.0.0 255.255.0.0 any object-group  
outbound-udp
access-list 101 permit tcp any host 210.81.12.195 object-group mail- 
inbound
access-list 101 permit tcp any host 210.81.12.196 object-group VoIP-tcp
access-list 101 permit udp any host 210.81.12.196 object-group VoIP-udp
access-list 101 permit tcp any host 210.81.12.197 object-group VoIP-tcp
access-list 101 permit udp any host 210.81.12.197 object-group VoIP-udp

pager lines 24
logging on
logging trap informational
logging host inside 172.16.0.26
logging host inside 172.16.0.12
icmp permit any unreachable outside
icmp permit any outside
mtu outside 1500
mtu inside 1500
ip address outside xxx.xxx.xxx.xxx 255.255.255.240
ip address inside 172.16.0.2 255.255.0.0

ip audit info action alarm
ip audit attack action alarm
ip local pool pbxlpool 10.1.0.100-10.1.0.200
pdm locationxxx.xxx.xxx.xxx 255.255.255.255 outside

pdm history enable
arp timeout 14400
global (outside) 1 interface
nat (inside) 0 access-list VPNREMOTE
nat (inside) 1 172.16.0.0 255.255.0.0 0 0
static (inside,outside) xxx.xxx.xxx.xxx xxx.xxx.xxx.xxx netmask  
255.255.255.255 0 1000
static (inside,outside) xxx.xxx.xxx.xxx xxx.xxx.xxx.xxx netmask  
255.255.255.255 0 1000
static (inside,outside) xxx.xxx.xxx.xxx xxx.xxx.xxx.xxx netmask  
255.255.255.255 0 1000

access-group 101 in interface outside
access-group 102 in interface inside
route outside 0.0.0.0 0.0.0.0 210.81.12.193 1

timeout xlate 3:00:00
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 sip-disconnect 0:02:00 sip-invite 0:03:00
timeout uauth 0:05:00 absolute
aaa-server TACACS+ protocol tacacs+
aaa-server TACACS+ max-failed-attempts 3
aaa-server TACACS+ deadtime 10
aaa-server RADIUS protocol radius
aaa-server RADIUS max-failed-attempts 3
aaa-server RADIUS deadtime 10
aaa-server LOCAL protocol local

aaa authentication ssh console LOCAL

http 172.16.0.12 255.255.255.255 inside

snmp-server host inside 172.16.0.12
snmp-server location pbxl-pix-datacentre

snmp-server community pbxl
snmp-server enable traps
floodguard enable

telnet 172.16.0.0 255.255.0.0 inside
telnet 192.168.0.0 255.255.255.0 inside
telnet timeout 60
ssh 210.101.94.211 255.255.255.255 outside
ssh 0.0.0.0 0.0.0.0 outside
ssh 172.16.0.12 255.255.255.255 inside
ssh 172.16.0.0 255.255.0.0 inside
ssh 192.168.1.0 255.255.255.0 inside

ssh timeout 60
console timeout 0
PBXLPIX01(config)#
PBXLPIX01(config)#

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