ssshibu
asked on
PIX firewall
Hi,
I am stuck up with below pix config .not able to ping or browse the public which i have natted to inside zone ip. seems like both icmp and http requests are being recived at PIx end when checked up the access-list .Kindly look at the below configs and help me to resolve the issue. thanks
PIX Version 6.3(5)
interface ethernet0 auto
interface ethernet1 auto
nameif ethernet0 outside security0
nameif ethernet1 inside security100
enable password DS1yhSk68ojtXT2A encrypted
passwd 93cuN9bZRhoPmf6Z encrypted
hostname ciscopix
domain-name sss
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 outside_access_in permit tcp any host 210.212.*..8 eq www
access-list outside_access_in permit icmp any host 210.212.*.8
pager lines 24
mtu outside 1500
mtu inside 1500
ip address outside 210.212.*.7 255.255.255.0
ip address inside 172.16.60.101 255.255.0.0
ip audit info action alarm
ip audit attack action alarm
pdm location 172.16.0.0 255.255.0.0 inside
pdm location 172.16.16.76 255.255.255.255 inside
pdm location 172.16.50.43 255.255.255.255 inside
pdm location 172.16.60.15 255.255.255.255 inside
pdm location 172.16.60.0 255.255.255.0 inside
pdm location 210.212.*.* 255.255.255.255 outside
pdm location 210.212.*.* 255.255.255.255 outside
pdm location 210.212.*.* 255.255.255.255 outside
pdm logging informational 100
pdm history enable
arp timeout 14400
nat (inside) 0 0.0.0.0 0.0.0.0 0 0
static (inside,outside) 210.212.*.* 172.16.16.76 netmask 255.255.255.255 0 0
access-group outside_access_in in interface outside
rip inside passive version 1
rip inside default version 1
route outside 0.0.0.0 0.0.0.0 210.212.*.* 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
http server enable
http 172.16.60.0 255.255.255.0 inside
no snmp-server location
no snmp-server contact
snmp-server community public
no snmp-server enable traps
floodguard enable
telnet 210.212.*.* 255.255.255.255 outside
telnet 210.212.*.* 255.255.255.255 outside
telnet 172.16.60.15 255.255.255.255 inside
telnet 172.16.50.43 255.255.255.255 inside
telnet timeout 10
ssh 210.212.*.* 255.255.255.255 outside
ssh 210.212.*.* 255.255.255.255 outside
ssh timeout 5
console timeout 0
dhcpd lease 3600
dhcpd ping_timeout 750
dhcpd auto_config outside
username babu password qcNlihb8awfR9nvm encrypted privilege 2
username dileep password 5IdlDfF/QhqmnsGH encrypted privilege 15
ciscopix# sh run
: Saved
========================== ========== ========== ========== ========== ==
ciscopix# sh access-list
access-list cached ACL log flows: total 0, denied 0 (deny-flow-max 1024)
alert-interval 300
access-list outside_access_in; 3 elements
access-list outside_access_in line 1 permit tcp any host 210.212.*.* eq www (hitcnt=28)
access-list outside_access_in line 2 permit icmp any host 210.212.*.* (hitcnt=91)
I am stuck up with below pix config .not able to ping or browse the public which i have natted to inside zone ip. seems like both icmp and http requests are being recived at PIx end when checked up the access-list .Kindly look at the below configs and help me to resolve the issue. thanks
PIX Version 6.3(5)
interface ethernet0 auto
interface ethernet1 auto
nameif ethernet0 outside security0
nameif ethernet1 inside security100
enable password DS1yhSk68ojtXT2A encrypted
passwd 93cuN9bZRhoPmf6Z encrypted
hostname ciscopix
domain-name sss
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 outside_access_in permit tcp any host 210.212.*..8 eq www
access-list outside_access_in permit icmp any host 210.212.*.8
pager lines 24
mtu outside 1500
mtu inside 1500
ip address outside 210.212.*.7 255.255.255.0
ip address inside 172.16.60.101 255.255.0.0
ip audit info action alarm
ip audit attack action alarm
pdm location 172.16.0.0 255.255.0.0 inside
pdm location 172.16.16.76 255.255.255.255 inside
pdm location 172.16.50.43 255.255.255.255 inside
pdm location 172.16.60.15 255.255.255.255 inside
pdm location 172.16.60.0 255.255.255.0 inside
pdm location 210.212.*.* 255.255.255.255 outside
pdm location 210.212.*.* 255.255.255.255 outside
pdm location 210.212.*.* 255.255.255.255 outside
pdm logging informational 100
pdm history enable
arp timeout 14400
nat (inside) 0 0.0.0.0 0.0.0.0 0 0
static (inside,outside) 210.212.*.* 172.16.16.76 netmask 255.255.255.255 0 0
access-group outside_access_in in interface outside
rip inside passive version 1
rip inside default version 1
route outside 0.0.0.0 0.0.0.0 210.212.*.* 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
http server enable
http 172.16.60.0 255.255.255.0 inside
no snmp-server location
no snmp-server contact
snmp-server community public
no snmp-server enable traps
floodguard enable
telnet 210.212.*.* 255.255.255.255 outside
telnet 210.212.*.* 255.255.255.255 outside
telnet 172.16.60.15 255.255.255.255 inside
telnet 172.16.50.43 255.255.255.255 inside
telnet timeout 10
ssh 210.212.*.* 255.255.255.255 outside
ssh 210.212.*.* 255.255.255.255 outside
ssh timeout 5
console timeout 0
dhcpd lease 3600
dhcpd ping_timeout 750
dhcpd auto_config outside
username babu password qcNlihb8awfR9nvm encrypted privilege 2
username dileep password 5IdlDfF/QhqmnsGH encrypted privilege 15
ciscopix# sh run
: Saved
==========================
ciscopix# sh access-list
access-list cached ACL log flows: total 0, denied 0 (deny-flow-max 1024)
alert-interval 300
access-list outside_access_in; 3 elements
access-list outside_access_in line 1 permit tcp any host 210.212.*.* eq www (hitcnt=28)
access-list outside_access_in line 2 permit icmp any host 210.212.*.* (hitcnt=91)
ASKER
Hi,
Thanks
i did the change as u suggested but still i am not able to ping from internet to my natted (public iP). i am able to reach the pIX outside ip.
Pl check
Thanks
i did the change as u suggested but still i am not able to ping from internet to my natted (public iP). i am able to reach the pIX outside ip.
Pl check
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ASKER
1.C:\Documents and Settings\admin>telnet 210.212.*.* 80
Connecting To 210.212.*.*...Could not open connection to the host, on port 80
: Connect failed
2. What is the default gateway set on the 172.16.16.76 machine? Does it point to PIX ? - this i need to check as i am sitting away from that office..will let u know
3. The earlier comment I gave was for your internal clients to get outside - cant we accomplish the outside connectivity with nat (inside) 0 0.0.0.0 0.0.0.0 command, what does actually this command do ?
in this case i dont want people to get outside from inside. but that 172.16.16.76 should get accessed from outside with 210.212.*.8
thanks for your quick reply
Connecting To 210.212.*.*...Could not open connection to the host, on port 80
: Connect failed
2. What is the default gateway set on the 172.16.16.76 machine? Does it point to PIX ? - this i need to check as i am sitting away from that office..will let u know
3. The earlier comment I gave was for your internal clients to get outside - cant we accomplish the outside connectivity with nat (inside) 0 0.0.0.0 0.0.0.0 command, what does actually this command do ?
in this case i dont want people to get outside from inside. but that 172.16.16.76 should get accessed from outside with 210.212.*.8
thanks for your quick reply
For the testing purpose, just do;
icmp allow any any
Then first try to see if you can ping the outside ip address of PIX.
If yes, then try to ping that webserver address (Public ip)
2. You need to check to see if the default gateway is pointing to pix, otherwise the communication may be reaching the device but it may not be coming back, thus fails.
3. nat 0 command disables all the natting, so if you don't want your inside clients to get out even then do this
no nat (inside) 0 0.0.0.0 0.0.0.0
Cheers,
Rajesh
icmp allow any any
Then first try to see if you can ping the outside ip address of PIX.
If yes, then try to ping that webserver address (Public ip)
2. You need to check to see if the default gateway is pointing to pix, otherwise the communication may be reaching the device but it may not be coming back, thus fails.
3. nat 0 command disables all the natting, so if you don't want your inside clients to get out even then do this
no nat (inside) 0 0.0.0.0 0.0.0.0
Cheers,
Rajesh
ASKER
Rajeshji
Sorry for the late written reply
Exactly as u pointed out the default gateway was wrong . Thanks a lot...!!!
Pl clarrify below doubts
1. Suppose at later stage if i want to allow a specific inside ip to go to internet how do i do the natting ? is it possible to allow a single ip alone?
2. 3. nat 0 command disables all the natting, so if you don't want your inside clients to get out even then do this
no nat (inside) 0 0.0.0.0 0.0.0.0 - should i remove the Global command aslo along with this? if i remove this can inside IPs ping outside IPs?
3. nat (inside) 0 0.0.0.0 0.0.0.0 - instead of this command can we put statement for individual network?
Thanks again
Sorry for the late written reply
Exactly as u pointed out the default gateway was wrong . Thanks a lot...!!!
Pl clarrify below doubts
1. Suppose at later stage if i want to allow a specific inside ip to go to internet how do i do the natting ? is it possible to allow a single ip alone?
2. 3. nat 0 command disables all the natting, so if you don't want your inside clients to get out even then do this
no nat (inside) 0 0.0.0.0 0.0.0.0 - should i remove the Global command aslo along with this? if i remove this can inside IPs ping outside IPs?
3. nat (inside) 0 0.0.0.0 0.0.0.0 - instead of this command can we put statement for individual network?
Thanks again
Glad you got it working.
1. Yes it is possible;
global (outside) 1 interface
nat (inside) 1 10.10.10.10 255.255.255.255
The above statements allow the client machine 10.10.10.10 to go out to internet using PAT of outside interface ip address of PIX.
2. Global and nat commands are required for inside to outside nat. (Basically nat command defines *what* to nat and global command defined *towhat* )
3. Same as question 1.
nat (inside) 1 10.10.10.0 255.255.255.0
The above statement will make sure that all the machines in the subnet 10.10.10.0 will be able to go out....
Cheers,
Rajesh
1. Yes it is possible;
global (outside) 1 interface
nat (inside) 1 10.10.10.10 255.255.255.255
The above statements allow the client machine 10.10.10.10 to go out to internet using PAT of outside interface ip address of PIX.
2. Global and nat commands are required for inside to outside nat. (Basically nat command defines *what* to nat and global command defined *towhat* )
3. Same as question 1.
nat (inside) 1 10.10.10.0 255.255.255.0
The above statement will make sure that all the machines in the subnet 10.10.10.0 will be able to go out....
Cheers,
Rajesh
no nat (inside) 0 0.0.0.0 0.0.0.0 0 0
nat (inside) 1 0.0.0.0 0.0.0.0
global (outside) 1 interface
Save the config and then try accessing internet from inside.
Cheers,
Rajesh