PIX - Access behind full PAT
Hello
Is it possible to have full access to the machine within the network (behind PIX using PAT) from outside? Not only a specific port, but all the ports for all machines within the network? If so, please guide me.
Thank you
Iltiaz
No, by its very definition is PAT * Port * address translation. If you need to have full access to a mailbox, you need to set up a static NAT 1 to 1 with a command
Tags: Cisco Security
Similar Questions
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Hi guys,.
I would like to know if the accesslist with PAT, you can refuse statements. IE reject the order under the access list for the traffic that you do not want to be PATed.
example:
access list acl-pat deny ip 10.0.0.1 0.0.0.0 all
permit access-list acl - pat ip 10.0.0.0 0.0.0.255 any
If I won't 10.0.0.1 PATed.
Hello
It's perfectly legal and quite a common practice.
Hope that help - rate pls post if it does.
Paresh
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VPN to PIX access problem.
I set up PPTP VPN on PIX 515 access with unrestricted license for Windows-based computers. I can connect but I'm unable to access all the resources on the network. I suspect this has something to access the list, but I don't know where to start. Here's the relevant part of the PIX config:
access-list all-traffic ip to allow a whole
access-list 100 permit icmp any any echo response
access-list 100 permit icmp any one time exceed
access-list 100 permit everything all unreachable icmp
.
IP address outside x.x.x.130 255.255.255.252
IP address inside 192.168.254.1 255.255.255.0
IP address x.x.x.97 255.255.255.224 DMZ1
address IP DMZ2 192.168.251.1 255.255.255.0
alarm action IP verification of information
alarm action attack IP audit
IP local pool vpnpool 192.168.254.201 - 192.168.254.254
.
Global (outside) 1 x.x.x.65 - x.x.x.93 netmask 255.255.255.224
Global (outside) 1 x.x.x.94 netmask 255.255.255.224
NAT (inside) 1 access-list all-traffic 0 0
(DMZ1) 1 access-list all-traffic NAT 0 0
Access-group 100 in external interface
Route outside 0.0.0.0 0.0.0.0 x.x.x.129 1
.
Sysopt connection permit-pptp
Telnet 192.168.254.0 255.255.255.0 inside
Telnet timeout 5
SSH timeout 5
Console timeout 0
VPDN Group 1 accept dialin pptp
PAP VPDN Group 1 ppp authentication
VPDN Group 1 chap for ppp authentication
VPDN Group 1 ppp authentication mschap
VPDN group ppp 1 encryption mppe auto
VPDN Group 1 client configuration address local vpnpool
VPDN Group 1 pptp echo 60
VPDN Group 1 client authentication local
VPDN username * password *.
VPDN allow outside
dhcpd address 192.168.254.100 - 192.168.254.200 inside
dhcpd dns x.x.x.131 x.x.x.200
dhcpd rental 86400
dhcpd ping_timeout 750
dhcpd allow inside
Looks like you forgot to add a "nat 0" defines that there are no PAT beween your local inside network and the PPTP DHCP pool.
PPTP pool must be different from the inside pool otherwise it is not routable correctly.
no ip local pool vpnpool 192.168.254.201 - 192.168.254.254
# Choose a new network PPTP pool that is not in use
example of dansMon # is 192.168.1.0/24
IP local pool vpnpool 192.168.1.1 - 192.168.1.254
access-list 101 permit ip 192.168.254.0 255.255.255.0 192.168.1.0 255.255.255.0
(Inside) NAT 0-list of access 101
See this site for more information:
http://www.Cisco.com/pcgi-bin/support/browse/psp_view.pl?p=hardware:PIX & s = Software_Configuration
see PPTP
sincerely
Patrick
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PIX 501 NAT and PAT with a single IP address
Using the following configuration, on my first PIX 501, I am unable to provide a server of mail to the outside world and allows inside customers to browse the Internet. :
6.3 (5) PIX version
interface ethernet0 car
interface ethernet1 100full
ethernet0 nameif outside security0
nameif ethernet1 inside the security100
enable password xxxx
passwd xxx
hostname fw-sam-01
SAM domain name
fixup protocol dns-length maximum 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 2000 skinny
No fixup not protocol smtp 25
fixup protocol sqlnet 1521
fixup protocol tftp 69
names of
outside access list permit tcp any host 62.x.x.109 eq smtp
access the inside to allow tcp a whole list
pager lines 24
Outside 1500 MTU
Within 1500 MTU
IP address outside the 62.177.x.x.x.255.248
IP address inside 192.168.45.1 255.255.255.0
alarm action IP verification of information
alarm action attack IP audit
location of PDM 192.168.45.2 255.255.255.255 inside
PDM logging 100 information
history of PDM activate
ARP timeout 14400
Global 1 interface (outside)
NAT (inside) 1 0.0.0.0 0.0.0.0 0 0
public static 62.177.x.x.x.45.2 (Interior, exterior) mask subnet 255.255.255.255 0 0
outside access-group in external interface
group-access to the Interior in the interface inside
Route outside 0.0.0.0 0.x.x.x.177.208.105 1
Timeout xlate 0:05:00
Timeout conn 01:00 half-closed 0:10:00 udp 0: CPP 02:00 0:10:00 01:00 h225
H323 timeout 0:05:00 mgcp 0: sip from 05:00 0:30:00 sip_media 0:02:00
Sip timeout - disconnect 0:02:00 prompt Protocol sip-0: 03:00
Timeout, uauth 0:05:00 absolute
GANYMEDE + Protocol Ganymede + AAA-server
AAA-server GANYMEDE + 3 max-failed-attempts
AAA-server GANYMEDE + deadtime 10
RADIUS Protocol RADIUS AAA server
AAA-server RADIUS 3 max-failed-attempts
AAA-RADIUS deadtime 10 Server
AAA-server local LOCAL Protocol
Enable http server
http 192.168.45.0 255.255.255.0 inside
No snmp server location
No snmp Server contact
SNMP-Server Community public
No trap to activate snmp Server
enable floodguard
Telnet 192.168.45.0 255.255.255.0 inside
Telnet timeout 5
SSH timeout 5
Console timeout 0
dhcpd lease 3600
dhcpd ping_timeout 750
: end
It is I'am using access list and groups wrong or am I wrong in PAT/NAT configuration.
Please advise...
Hello
I went through the ongoing discussion. The pix configuration should be fine for now according to suggestions. The problems seems to be on the server. If it is a new installation of windows, then there is an option not to accept requests that are not local network.
If you want to check if pix allows connections and then when you telnet to port 25 of the outside, just run the xlates control.
SH xlate and it should show you a translation for the inside host. More than a quick test if pix allows traffic is to check 'sho-outdoor access list' and see if the counters are increasing.
Hopefully this should help you.
Arun S.
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I am facing convert statements leads on our PIX 520 access lists. Is there a better way to do this will be as little as possible traffic interruption? For example, to create access lists and then remove the conduit, or vice versa?
Second, is there a priority recommended in order to access list?
Hello
This is a very good paper on the conversion of lines to the ACL, also when writing ACL always have your most important ACL on top of the ACL work from the top down. When you make changes to the ACL or static lines always issue the command clear xlate and save with RAM command.
http://www.giac.org/practical/GSEC/Bill_Donaldson_GSEC.pdf - by Bill Donaldson, GSEC.
If you want more information/inf, then let me know.
Thank you / Jay.
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VPN bewtween 2 PIX - 1 behind a NAT router.
Hello
I created 2 PIX with a VPN tunnel between them and it worked. Small was during a test well before that of PIX has been shipped to the location where it has been implemented (with of course the new addresses IP etc.)
Now this PIX is placed behind a Zyxel router running NAT, and the tunnel will not simply come to the top. It is never further than the State of 'mm_sa_setup '.
I am aware that the only thing that is different from when he worked is the NAT router damn, so I should be aware of this router? I'm going nuts: 0)
Oh and btw. I use ESP-3des-sha.
Thanks in advance,
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When you activate the NAT - T, Cisco PIX automatically opens port 4500 on all active IPSec interfaces so you should be sure that the UDP 4500 port is not blocked between two PIX.
Kind regards
Mehrdad
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Termination of VPN on Pix behind router IOS with private subnet
OK, basically, I wonder if it is possible to terminate a VPN connection on a Pix 506 Firewall which is behind a router IOS. The public interface of the Pix 506 have a private on a 29 ip address will IOS within the interface. Network is configured as follows:
Internet as 10Base T
| (5 public - X.X.X.34. 38)
| (In WIC-1ENET)
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Is it possible to do this type of work setting.
I realize I could put an external switch to 1760 and run the public subnet directly and individually in the 1760 and Pix 506, however, I really would prefer not no need to do so if it is possible to avoid it.
Remove the crypto map to the interface on the PIX and reapply.
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Is it possible to configure a PIX to two pass through IPsec traffic AND be an endpoint?
On a related note, two customer software VPN hosts can connect to each other?
Thank you
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My pix company does exactly what you posted, there is lan - lan vpn, and we again establish vpn to other companies via a software vpn client.
concerning the transmission of described video, it should not need additional acl or configuration assuming that there is no acl on the pix. a question must be noticed is that the other end (i.e. the end point of the remote vpn client) needs to nat-traversal since the local pix usually perform nat/pat.
However, the vpn directly between two clients is not feasible as its name suggests (they are the two client).
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Place a FIOS for VPN router behind PIX 501
I have a Verizon FIOS internet connection and one of their routers wide wireless broadband, and this is a configuration of base completely... their router DHCP and firewalls, and the connection has a dynamic address. I would put the PIX 501 behind the Verizon router as one of its clients and make the VPN PIX of other PIX 501 at other locations, such as my entire network has access to remote networks.
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When installing my FiOS, I had already asked that it be installed on the Ethernet cable. Don't know they need to do something for you to spend the coax to Ethernet.
The best way to test it would be to find the Media Converter (follow the coaxial cable between your FiOS router to the demarc and there should be a box with a coaxial port, some phone Sockets and an Ethernet port). If you unplug the coaxial cable and plug a laptop computer on the Ethernet port, see if your laptop takes a public IP address. If Yes, then you just have to run to your PIX501 Ethernet cable and you should be ready.
Just to note that Verizon, according to your region, reserved DHCP assignments. This means that you may need to call Verizon and ask them to release the previous assignment of DHCP-MAC addresses. I had this happen recently. They must release the assignment then your PIX will pull a new IP address and they will book your new IP - MAC address assignment. They do this to speed up the connection to a cold start time on the router.
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