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No Internet Access Through My Pix 501 Firewall (Help)!!!

Ok everything was working fine no problems at all, I then wanted to get OWA working, so I put in what was needed you will see the Exchange commands.

All looked ok and I could then from outside access the OWA so I thought YAY good job.

Anyway the next day we had no internet access and rremote users were unable to VPN top our W2k3 server.

I cant see whats changed, please look at the script below see if there is anthing I may have done wrong or is there something blocking these accesses.

Please help pix guru's,

PIX Version 6.3(4)
interface ethernet0 auto
interface ethernet1 100full
nameif ethernet0 outside security0
nameif ethernet1 inside security100
enable password pjhghjhhhbg encrypted
passwd pjghghghggh encrypted
hostname pixfirewall
domain-name ciscopix.com
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 sqlnet 1521
fixup protocol tftp 69
names
name 192.168.1.202 Exchange
name 135.196.176.231 Exchange_outside
access-list inside_outbound_nat0_acl permit ip interface inside 192.168.1.0 25
255.255.128
access-list outside_cryptomap_dyn_20 permit ip any 192.168.1.0 255.255.255.128
access-list outside_access_in permit gre any any
access-list outside_access_in permit tcp any interface outside eq smtp
access-list outside_access_in permit tcp any interface outside eq pptp
access-list outside_access_in permit tcp any interface outside eq 5900
access-list outside_access_in permit tcp any eq smtp host Exchange_outside
access-list outside_access_in permit tcp any host Exchange_outside
access-list outgoing
access-list outgoing permit ip any any
access-list outgoing permit icmp any any
pager lines 24
mtu outside 1500
mtu inside 1500
ip address outside Exchange_outside 255.255.255.224
ip address inside 192.168.1.1 255.255.255.0
ip audit info action alarm reset
ip audit attack action alarm reset
ip local pool skyevpn 192.168.1.50-192.168.1.70
pdm location 213.86.132.161 255.255.255.255 outside
pdm location 213.86.132.162 255.255.255.255 outside
pdm location 192.168.1.0 255.255.255.255 inside
pdm location 192.168.1.49 2
pdm location Exchange_outside 255.255.255.255 inside
pdm location Exchange 255.255.255.255 inside
pdm logging informational 100
pdm history enable
arp timeout 14400
global (outside) 1 interface
nat (inside) 0 access-list inside_outbound_nat0_acl
nat (inside) 1 0.0.0.0 0.0.0.0 0 0
static (inside,outside) tcp Exchange_outside smtp Exchange smtp netmask 255.255.
255.255 0 0
static (inside,outside) tcp interface pptp 192.168.1.200 pptp netmask 255.255.25
5.255 0 0
static (inside,outside) tcp Exchange_outside 5900 192
255.255.255 0 0
static (inside,outside) Exchange_outside Exchange netmask 255.255.255.255 0 0
access-group outside_access_in in interface outside
access-group outgoing in interface inside
route outside 0.0.0.0 0.0.0.0 81.178.42.14 1
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 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
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
sysopt connection permit-ipsec
crypto ipsec transform-set ESP-3DES-MD5 esp-3des esp-md5-hmac
crypto dynamic-map outside_dyn_map 20 match address outside_cryptomap_dyn_20
crypto dynamic-map outside_dyn_map 20 set transform-set ESP-3DES-MD5
crypto map outside_map 65535 ipsec-isakmp dynamic outside_dyn_map
crypto map outside_map interface outside
isakmp enable outside
isakmp enable inside
isakmp policy 20 authentication pre-share
isakmp policy 20 encryption 3des
isakmp policy 20 hash md5
isakmp policy 20 group 2
isakmp policy 20 lifetime 86400
vpngroup skye address-pool skyevpn
vpngroup skye dns-server 192.168.1.49
vpngroup skye idle-time 1800
vpngroup skye password ********
telnet 213.86.132.161 255.255.255.255 outside
telnet 213.86.132.162 255.255.255.255 outside
telnet 192.168.1.0 255.255.255.255 inside
telnet 192.168.1.0 255.255.255.0 inside
telnet timeout 5
ssh timeout 5
console timeout 0
dhcpd auto_config outside
vpnclient server 213.86.132.161
vpnclient mode client-mode
vpnclient vpngroup win2k password ********
terminal width 80
Cryptochecksum:c33fe327fa476226d3e9e6783b513f1d
: end

What do you think? Please help on this poeple....

Voltz-dk

I think your problem is this combination:

>access-list inside_outbound_nat0_acl permit ip interface inside 192.168.1.0 255.255.255.128
>nat (inside) 0 access-list inside_outbound_nat0_acl

Try these:

access-list inside_outbound_nat0_acl permit ip 192.168.1.0 255.255.255.0 192.168.1.48 255.255.255.240
access-list inside_outbound_nat0_acl permit ip 192.168.1.0 255.255.255.0 192.168.1.64 255.255.255.248
no access-list inside_outbound_nat0_acl permit ip interface inside 192.168.1.0 255.255.255.128
clear xlate

stevem200872

ASKER

Thank you so much Thank you I will try this afternoon

Les Moore

>name 135.196.176.231 Exchange_outside
>static (inside,outside) Exchange_outside Exchange netmask 255.255.255.255 0 0
Can you confirm that this Exchange_outside IP address is NOT the same as the interface IP?

As a side note, you do not need an outbound acl
>access-group outgoing in interface inside
Especially given that your ACL permits almost everything anyway:
>access-list outgoing permit ip any any

Suggest you remove that acl from the inside interface
no access-group outgoing in interface inside

Another note:
>ip local pool skyevpn 192.168.1.50-192.168.1.70
VPN connection work much, much better if you use a different IP subnet for your VPN users, for example, use 192.168.172.0
Also FYI, if you continue using 192.168.1.x as your inside subnet, you will have many VPN users complain that they can't access resources after they connect. Why? Simple. Your inside IP subnet is 192.168.1.0 and their home IP subnet is also 192.168.1.0
This is the single most widely used IP subnet in the world, especially for home users and SOHO routers/firewalls. I wish Cisco did not use this as the default out-of-the-box on the PIX's...

Voltz-dk

Ah, I missed that static / interface problem. lrmoore got a good point there, you shouldn't make a 1-1 static with your interface address or you have limited Internet access to the exchange.
Make it into port forwarding, just as you have your other statics.

stevem200872

ASKER

Thanks for everything, on this it was a wired one, but in the end I did a wri flash, and started from scratch, then script now looks like this and works fine, ineternet and mail now work again, wired one.

One last question though if I may and thanks by the way for all your help your a star...

This is the script now please see below... I dont have OWA working now what needs to be added...?

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 sqlnet 1521
fixup protocol tftp 69
names
name 192.168.1.202 Exchange
name 135.196.176.231 Exchange_outside
access-list inside_outbound_nat0_acl permit ip interface inside 192.168.1.0 25
255.255.128
access-list outside_cryptomap_dyn_20 permit ip any 192.168.1.0 255.255.255.128
access-list outside_access_in permit gre any any
access-list outside_access_in permit tcp any interface outside eq smtp
access-list outside_access_in permit tcp any interface outside eq pptp
access-list outside_access_in permit tcp any interface outside eq 5900
access-list outside_access_in permit tcp any eq smtp host Exchange_outside
access-list outside_access_in permit tcp any host Exchange_outside
access-list outgoing
access-list outgoing permit ip any any
access-list outgoing permit icmp any any
pager lines 24
mtu outside 1500
mtu inside 1500
ip address outside Exchange_outside 255.255.255.224
ip address inside 192.168.1.1 255.255.255.0
ip audit info action alarm reset
ip audit attack action alarm reset
ip local pool skyevpn 192.168.1.50-192.168.1.70
pdm location 213.86.132.161 255.255.255.255 outside
pdm location 213.86.132.162 255.255.255.255 outside
pdm location 192.168.1.0 255.255.255.255 inside
pdm location 192.168.1.49 2
pdm location Exchange_outside 255.255.255.255 inside
pdm location Exchange 255.255.255.255 inside
pdm logging informational 100
pdm history enable
arp timeout 14400
global (outside) 1 interface
nat (inside) 0 access-list inside_outbound_nat0_acl
nat (inside) 1 0.0.0.0 0.0.0.0 0 0
static (inside,outside) tcp Exchange_outside smtp Exchange smtp netmask 255.255.
255.255 0 0
static (inside,outside) tcp interface pptp 192.168.1.200 pptp netmask 255.255.25
5.255 0 0
static (inside,outside) tcp Exchange_outside 5900 192
255.255.255 0 0
static (inside,outside) Exchange_outside Exchange netmask 255.255.255.255 0 0
access-group outside_access_in in interface outside
access-group outgoing in interface inside
route outside 0.0.0.0 0.0.0.0 81.178.42.14 1
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 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
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
sysopt connection permit-ipsec
crypto ipsec transform-set ESP-3DES-MD5 esp-3des esp-md5-hmac
crypto dynamic-map outside_dyn_map 20 match address outside_cryptomap_dyn_20
crypto dynamic-map outside_dyn_map 20 set transform-set ESP-3DES-MD5
crypto map outside_map 65535 ipsec-isakmp dynamic outside_dyn_map
crypto map outside_map interface outside
isakmp enable outside
isakmp enable inside
isakmp policy 20 authentication pre-share
isakmp policy 20 encryption 3des
isakmp policy 20 hash md5
isakmp policy 20 group 2
isakmp policy 20 lifetime 86400
vpngroup skye address-pool skyevpn
vpngroup skye dns-server 192.168.1.49
vpngroup skye idle-time 1800
vpngroup skye password ********
telnet 213.86.132.161 255.255.255.255 outside
telnet 213.86.132.162 255.255.255.255 outside
telnet 192.168.1.0 255.255.255.255 inside
telnet 192.168.1.0 255.255.255.0 inside
telnet timeout 5
ssh timeout 5
console timeout 0
dhcpd auto_config outside
vpnclient server 213.86.132.161
vpnclient mode client-mode
vpnclient vpngroup win2k password ********
terminal width 80
Cryptochecksum:c33fe327fa476226d3e9e6783b513f1d
: end

What needs to be added for OWA, when I out the OWA in before thats when Internet access stopped working..

ASKER CERTIFIED SOLUTION

Les Moore

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stevem200872

ASKER

Thank you and I was on site and couldn't get internet access so didn't see the other part until I had re-written the script, something must ahve change as the internet access startde working again.. but thank you... this now works fine I'm really sorry on the above....

Thank you...:-)

One last thing the VPN????

When you try to access the VPN we get error 721....what part should I look at for this, is it the VPNGROUP SKYE PASSWORD ********
or the VPNCLIENT VPNGROUP WIN2K PASSWORD ******

Last one I promise and I really mean a big thank your a top guy..