Guest
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 Posted:
Fri Dec 16, 2005 5:20 pm Post subject:
PIX501 Site to Site ICMP Problem |
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Hello -
I have a site to site VPN setup between our office and a couple of
employee's homes. The problem that I am having is that the VPN tunnel
will establish but we cannot ping anything on either subnets across the
site to site VPN. I've made changes to the ACLs, used the 'icmp
permit' command and even tried to use conduits but I cannot ping any
hosts on the remote subnet across the VPN. I can however access our
exchange, web and other servers without a problem. Below are copies of
the configs. IP's, hostnames, passwords have been removed/changed for
security reasons. Could somebody please tell me what is wrong with the
config, or what needs to be changed so that we can ping from home to
the office. Thanks.
Office config:
: Saved
:
PIX Version 6.3(5)
interface ethernet0 auto
interface ethernet1 100full
nameif ethernet0 outside security0
nameif ethernet1 inside security100
enable password removed encrypted
passwd removed encrypted
hostname OfficePIX501
domain-name office.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 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
access-list 100 permit ip 172.31.40.0 255.255.255.0 192.168.16.0
255.255.255.24
access-list 100 permit ip 172.31.40.0 255.255.255.0 192.168.2.0
255.255.255.0
access-list 100 permit ip 172.31.40.0 255.255.255.0 192.168.3.0
255.255.255.0
access-list 10 deny ip 127.0.0.0 255.0.0.0 any
access-list 10 deny ip 169.254.0.0 255.255.0.0 any
access-list 10 deny ip 172.16.0.0 255.255.0.0 any
access-list 10 deny ip 224.0.0.0 224.0.0.0 any
access-list 10 permit icmp any any echo-reply
access-list 10 permit icmp any any time-exceeded
access-list 10 permit icmp any any
access-list 10 permit tcp any host 1.1.1.1 eq smtp
access-list 10 permit tcp any host 1.1.1.1 eq 3389
access-list 10 permit tcp any host 1.1.1.1 eq www
access-list 10 permit tcp any host 1.1.1.1 eq https
access-list 10 permit icmp any any unreachable
access-list 10 permit icmp any any source-quench
access-list 10 permit ip 192.168.2.0 255.255.255.0 172.31.40.0
255.255.255.0
access-list 10 permit icmp 192.168.2.0 255.255.255.0 172.31.40.0
255.255.255.0
access-list 110 permit ip 172.31.40.0 255.255.255.0 192.168.16.0
255.255.255.0
pager lines 24
logging on
logging timestamp
logging console emergencies
logging monitor emergencies
logging buffered warnings
logging trap debugging
logging history debugging
icmp permit any outside
mtu outside 1400
mtu inside 1500
ip address outside 1.1.1.1 255.255.255.248
ip address inside 172.31.40.1 255.255.255.0
ip verify reverse-path interface outside
ip verify reverse-path interface inside
ip audit name jab attack action alarm drop reset
ip audit name probe info action alarm drop reset
ip audit interface outside probe
ip audit interface outside jab
ip audit info action alarm drop reset
ip audit attack action alarm drop reset
ip audit signature 2000 disable
ip audit signature 2001 disable
ip local pool vpnpool 192.168.16.5-192.168.16.10
pdm logging informational 100
pdm history enable
arp timeout 14400
global (outside) 1 interface
nat (inside) 0 access-list 100
nat (inside) 1 0.0.0.0 0.0.0.0 0 0
static (inside,outside) tcp 1.1.1.1 smtp 172.31.40.250 smtp netmask
255.25
5.255.255 0 0
static (inside,outside) tcp 1.1.1.1 www 172.31.40.250 www netmask
255.255.
255.255 0 0
static (inside,outside) tcp 1.1.1.1 https 172.31.40.250 https netmask
255.
255.255.255 0 0
static (inside,outside) tcp 1.1.1.1 3389 172.31.40.250 3389 netmask
255.25
5.255.255 0 0
access-group 10 in interface outside
route outside 0.0.0.0 0.0.0.0 1.1.1.2 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 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
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 strong esp-3des esp-md5-hmac
crypto dynamic-map dynmap 1 set transform-set strong
crypto map dynmap1 10 ipsec-isakmp dynamic dynmap
crypto map dynmap1 interface outside
isakmp enable outside
isakmp key ******** address 0.0.0.0 netmask 0.0.0.0
isakmp identity address
isakmp policy 10 authentication pre-share
isakmp policy 10 encryption 3des
isakmp policy 10 hash md5
isakmp policy 10 group 1
isakmp policy 10 lifetime 1000
vpngroup vpnsetting address-pool vpnpool
vpngroup vpnsetting dns-server 172.31.40.250
vpngroup vpnsetting wins-server 172.31.40.250
vpngroup vpnsetting default-domain removed.com
vpngroup vpnsetting split-tunnel 110
vpngroup vpnsetting idle-time 1800
vpngroup vpnsetting password ********
telnet 192.168.16.0 255.255.255.0 outside
telnet 192.168.3.0 255.255.255.0 outside
telnet 192.168.2.0 255.255.255.0 outside
telnet 172.31.40.0 255.255.255.0 inside
telnet timeout 60
ssh 0.0.0.0 0.0.0.0 outside
ssh timeout 60
console timeout 0
terminal width 80
Cryptochecksum:71a838b1e54be2294e926ff2e449654c
: end
Home config:
: Saved
:
PIX Version 6.3(5)
interface ethernet0 auto
interface ethernet1 100full
nameif ethernet0 outside security0
nameif ethernet1 inside security100
enable password removed encrypted
passwd removed encrypted
hostname HomePIX501
domain-name Homepix.net
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
access-list 100 permit ip 192.168.2.0 255.255.255.0 172.31.40.0
255.255.255.0
access-list 100 permit ip 192.168.2.0 255.255.255.0 192.168.3.0
255.255.255.0
access-list 10 deny ip 127.0.0.0 255.0.0.0 any
access-list 10 deny ip 169.254.0.0 255.255.0.0 any
access-list 10 deny ip 172.16.0.0 255.255.0.0 any
access-list 10 deny ip 224.0.0.0 224.0.0.0 any
access-list 10 permit icmp any any echo-reply
access-list 10 permit icmp any any time-exceeded
access-list 10 permit icmp any any
access-list 10 permit icmp any any unreachable
access-list 10 permit icmp any any source-quench
access-list 10 permit ip 172.31.40.0 255.255.255.0 192.168.2.0
255.255.255.0
access-list 10 permit icmp 172.31.40.0 255.255.255.0 192.168.2.0
255.255.255.0
pager lines 24
logging on
logging timestamp
logging console emergencies
logging monitor emergencies
logging buffered warnings
logging trap debugging
logging history debugging
icmp permit any outside
mtu outside 1500
mtu inside 1500
ip address outside dhcp setroute
ip address inside 192.168.2.100 255.255.255.0
ip verify reverse-path interface outside
ip verify reverse-path interface inside
ip audit name jab attack action alarm drop reset
ip audit name probe info action alarm drop reset
ip audit interface outside probe
ip audit interface outside jab
ip audit info action alarm drop reset
ip audit attack action alarm drop reset
ip audit signature 2000 disable
ip audit signature 2001 disable
pdm logging informational 100
pdm history enable
arp timeout 14400
global (outside) 1 interface
nat (inside) 0 access-list 100
nat (inside) 1 0.0.0.0 0.0.0.0 0 0
access-group 10 in interface outside
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 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
http server enable
http 172.31.40.0 255.255.255.0 outside
http 192.168.2.0 255.255.255.0 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 strong esp-3des esp-md5-hmac
crypto map Home2Office 10 ipsec-isakmp
crypto map Home2Office 10 match address 100
crypto map Home2Office 10 set peer 72.245.146.34
crypto map Home2Office 10 set transform-set strong
crypto map Home2Office interface outside
isakmp enable outside
isakmp key ******** address 1.1.1.1 netmask 255.255.255.255
isakmp identity address
isakmp policy 10 authentication pre-share
isakmp policy 10 encryption 3des
isakmp policy 10 hash md5
isakmp policy 10 group 1
isakmp policy 10 lifetime 1000
telnet 192.168.16.0 255.255.255.0 outside
telnet 192.168.3.0 255.255.255.0 outside
telnet 172.31.40.0 255.255.255.0 outside
telnet 0.0.0.0 0.0.0.0 outside
telnet 192.168.2.0 255.255.255.0 inside
telnet timeout 60
ssh 0.0.0.0 0.0.0.0 outside
ssh timeout 60
console timeout 0
dhcpd address 192.168.2.25-192.168.2.50 inside
dhcpd dns 68.87.75.194 68.87.64.196
dhcpd lease 3600
dhcpd ping_timeout 750
dhcpd auto_config outside
dhcpd enable inside
terminal width 80
Cryptochecksum:39b99b97937befbb04d412cc69f09915
: end
Thank you for your help. |
|
Walter Roberson
Guest
|
| Posted:
Fri Dec 16, 2005 5:20 pm Post subject:
Re: PIX501 Site to Site ICMP Problem |
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|
In article <1134750188.730585.172400@g44g2000cwa.googlegroups.com>,
<btercha@omegasystemscorp.com> wrote:
| Quote: | I have a site to site VPN setup between our office and a couple of
employee's homes. The problem that I am having is that the VPN tunnel
will establish but we cannot ping anything on either subnets across the
site to site VPN.
Office config:
PIX Version 6.3(5)
|
[rearranged]
| Quote: | access-list 110 permit ip 172.31.40.0 255.255.255.0 192.168.16.0 255.255.255.0
vpngroup vpnsetting split-tunnel 110
|
Your split tunnel is for 192.168.16.x on the client side and
172.31.40.x on the server side to go through the tunnel.
| Quote: | ip local pool vpnpool 192.168.16.5-192.168.16.10
vpngroup vpnsetting address-pool vpnpool
|
This agrees with the client side address for the split tunnel.
| Quote: | access-list 100 permit ip 172.31.40.0 255.255.255.0 192.168.16.0 255.255.255.24
access-list 100 permit ip 172.31.40.0 255.255.255.0 192.168.2.0 255.255.255.0
access-list 100 permit ip 172.31.40.0 255.255.255.0 192.168.3.0 255.255.255.0
nat (inside) 0 access-list 100
|
This ACL is read as 172.31.40.x on the PIX side and a few other things
on the remote side, and turns off address translation for those flows.
The 192.168.2.x and 192.168.3.x destinations are irrelevant for the
problem being investigated, so focus on the other line:
access-list 100 permit ip 172.31.40.0 255.255.255.0 192.168.16.0 255.255.255.24
Is this line consistant with 172.31.40.x on the PIX side and
192.168.16.x on the client side? No! This line is for
192.168.16.0 - 192.168.16.7, .32 - .39, .64 - .71, .96 - .103,
..128 - .135, .160 - .167, .192 - .199, and .224 - .231
If a 0 accidently got dropped in the posting and the line is really
access-list 100 permit ip 172.31.40.0 255.255.255.0 192.168.16.0 255.255.255.240
then it covers 192.168.16.0 - 192.168.16.15 which does cover the complete
allocated address pool, but is not consistant with the split tunnel.
--
"No one has the right to destroy another person's belief by
demanding empirical evidence." -- Ann Landers |
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