Incoming direction on the Pix interfaces
Access-group of statements always apply an ACL to an interface with the command "in the
outdoor - traffic from the Internet inside - traffic from inside Lan DMZ - traffic coming from the DMZ I just wanted to check that, because it's contrasted with IOS router configs. My understanding is the following: Outside the s0 interface - incoming list applies to incoming traffic from the Internet Inside interface e0/0 - incoming list applies to incoming traffic traffic vs subnet towards inteface as in my example of Pix inside. If someone could verify this, point me to a link or correct my examples? Thank you RJ 1. Yes, to filter incoming traffic in the interface 2 traffic can originate from anywhere, that is to say of many jumps/subnets away or directly connected before it hits the interface, but it moves to the interface. Same logic on pix and router. 3. Yes, to filter traffic leaving the interface 4 Yes, traffic position away from the router to the connected subnet or a destination of many jumps far (PIX has no more outgoing ACL) Steve Tags: Cisco Security Telnet on PIX with the external interface Is there a way to telnet in PIX Firewall through the external interface? SSH is a valid method to access the site, but I wonder if there is another way to do it. PDM is another tool for access and modification of the configuration. Any help will be useful. Best wishes Onur I'm pretty sure that Telent directly to the external interface of a PIX is not available. It is such a big security risk that it is not offered as an option. SSH is a much better way to go (even if it's only SSH1). You can probably VPN in your network and Telnet from inside. Good luck Scott Hello We are not supposed to assign an IP address for the PIX interfaces with a subnet mask 255.255.255.255. But why so and when a subnet mask 255.255.255.255 is used in general (even in a context of no - PIX)? (I noticed the subnet mask 255.255.255.255 attributed to the IP address of a host that connects to the Internet (a single dial-up connection). Could someone help me understand this concept of 32 mask? Thanks and greetings S. Lora The mask associated with an interface of PIX, or any other network equipment or hosts that same Win hosts (except dialup), determines the subnet range. To be able to communicate, you must have at least 2 hosts located on the same subnet or similar, otherwise the layer 2 Protocol will not be able to reach another host on that subnet. The case of dialup, is special, because Microsoft does not respect the principle of the subnet to breast DUN (network of remote access to Win driver). Microsoft, similarly, is not sure to IP address of the modem router provided by the access server, MS put the host IP address in the gateway field. In other words, a host of Win always send packets across the network PPP (remote connection) when they are intended for someone other than him. It is used when the host of numbering has only 1 interface, but what happens when this host is communicating with an access network remotely via a modem and a LAN at the same time. In the world of MS, this does not work. You need a special type of software to work around this poor implementation. Just to say that the network mask does not matter in the world MS dialup, you can find 255.255.255.255. Kind regards Ben Amount of the ACLs on an interface of the PIX Hi all I just wanted to know how much group-access entry (s) that you can attached to a 515ER PIX interface? I wonder if it's the same rule as the router, IE 1 ACL/interface/direction. En thank you your help. Hi Vincent,. You can apply to a single group-access on any pix interface... is not like in a router in a router, you can apply groups of incoming/outgoing access... On a pix you can apply only inbound access-groups... I hope this helps... all the best... REDA to reach a server on a VLAN that is not directly connected to the inside interface scénarion PIX 515 6506 core with VLAN A, B, c. (intervlan routing is ok) vlanC is directly connected to the inside interface of the fw question How a crowd outside could reach a server ServerA on vlanA. Hello Concerning Point 1, Yes if the roads required for networks connected inside the network is done on pix. Concerning Point 2, if the IP address that you use within the network is routable (public IP), the command you gave will work. The command indicates that when 10.10.1.10 inside the network host wants to go outside the network, use the same IP address. Because NAT does not occur, the actual address of the server presents itself as the visible address and the address of the host. So if the IP address you specify is not a public IP address, outside world can't access. We can connect the output of the sensor directly to the DAQ hardware or any interface necessary? We can connect the output of the sensor directly to the DAQ hardware or any interface necessary? If so wat kinda necessary interface? How to change the sensor output to match entry-level data acquisition? If the sensor output beyond daq range is provided. What are its effects? pls answer -It depends on your signal and the type of device you have. Your DAQ provides a package of signals? Also, what type of signal you want to measure? You must select DAQ that matches that. Take a look at the following before you start: Getting started with NO-DAQmx: Main Page And take a look at table 1 in the following article to wire your signal to the right: Wiring and considerations of noise for analog signals -You will need to use external circuitory to match the input of data acquisition range. -You could damage the unit. If you have any other questions, please after return. And, don't forget to give more details about your configuration, the hardware and what you're trying to do. Can the customer vpn to pix interface unprotected to a protected interface I have a pix multi-interface, the description of the interface is as follows: Outside-> 10MB to ISP Inside-> vlan main DMZ-> Web servers, etc... Lab1-> test application servers LAB2-> test application servers etc... Comments wireless-> free wireless (connected to the Cisco WAP) The open wireless only has access to the internet, not one of the reliable networks. It is an untrusted interface (security lvl 1). The external interface is security 0. I want to be able to allow vpn access from the wireless in networks of trust like vpn from outside (internet) is processed. I guess that the pix sees a vpn connection attempt to another of its interfaces. The client times out connecting since the wireless for the pix outside IP interface. The pix records simply this: January 20, 2009 13:38:23: % 7-710005-PIX: UDP request and eliminated from 192.168.20.5/1346 to GuestWireless:yy.yy.yy.yy/500 the external interface IP = yy.yy.yy.yy the pix is also the dhcp server for wireless network connections. Is it still possible? If so, what Miss me? Thank you Dave To answer: -. The leg wireless of the PIX is the security level 1, and the external interface is the security level 0. That would not mean that vpn is launched from a higher to a lower security interface? Yes but the traffic is clear--asked to terminate a VPN connection to an interface that is locally attached to the PIX effectivly in the inside of the unit. Sure that PIX will refuse the connection he received on the external interface of the interface without comment thread. No it isn't the same thing, something like: -. crypto ISAKMP enable GuestWireless - this indicates the PIX to listen and accept connections VPN ISAKMP/issues of ANY device connected to this interface FOR the GuestWireless interface. HTH > A VPN client can go same interface on the Pix 515 A user in a Pix VPN and get an address x.x.x.x via an ippool on the Pix. Once this is done, they will need access to information on the public network. Is it possible since they come out of the same interface? I can open ports and route subnets on our core routers, but that doesn't seem to work. Thank you Dwane Hi elodie You can do this by entering the following command permit same-security-traffic intra-interface Concerning Termination of the client PIX VPN and Internet access from the same interface Hello VPN remote users connect to PIX (7.2) outside interface, but need to have these clients to access the Internet through the PIX outside interface as well. Need this because PIX IPs is registered and allowed access to some electronic libraries. One way would be to set up a proxy within the network and vpn users have access to the Internet through the proxy, but can it be done without proxy? Yes, public internet on a stick Configuration of the PIX firewall Interface Hello On a PIX 525 running ver 6.3 4 port 10/100 card installed it will be possible to configure interfaces as follows: E0 - inside interface E1 - failover stateful Firewall E2 - Firewall failover monitoring link E5 - outside interface I'm basically is unsure as to if it is possible to move the external interface to its default configuration as e0 to E5, and even if it will be possible to specify e0 as the interface instead of the default E1 confiuration inside = inside. Another quickie - I guess that with the additional 4 port 10/100 card installed my interfaces will be numbered e0 - e5. Is this correct? Thank you. Said Cisco documentation is not possible to change the name and the security level of inside interface, but I experience it is possible: nameif ethernet1 failover security50 nameif ethernet5 off security0 etc... I would not recommend doing in a production environment because it would create a lot of confusion... 525 has two fixed interfaces e0 e1 - card expansion port 4 should therefore be numbered e2, e3 (from left to right) M. Hope that helps the rate if it isn't Creating a new interface on the Pix 516F I've created and activated a new interface (DMZ) on a 516F Pix. In the MDP a default outbound rule was automatically created for this interface. I could get out to the internet without any problem. However, I need to open some ports in the DMZ to the inside interface. When I add a new access rule, the outbound rule disappears and I can no longer to the internet. I tried to recreate a similar rule to allow all tcp traffic to the external interface of the demilitarized zone. The MDP has accepted the rule, but when I went back to look at it, the rule has been changed from the outside to the inside. How can I maintain the default outbound rule and always open ports inside? Thank you Nick In General: allow access to your internal network (web servers, printers, regardless.) (BE SPECIFIC!) deny all access to your internal network (deny ip no matter what subnet) allow an ip Why incoming e-mail goes directly to the deleted file Why all my incoming emails go directly to the deleted file? Whenever I get notification that I have incoming mail and I opened my Inbox, nothing is there and I have to open the file deleted to see. To read it, I mark it as 'unread', then move it to my Inbox. However, once I read, close my e-mail page, then come back to emails are again in the deleted file. Hi boongsongum, · You're talking about this email? · Is a webmail or you have an email client installed? If this Windows live Mail, then please post your query to the Windows Live Solution center. Please respond with more information so we can help you best. Is it possible to ping directly from low security high security without translations on a PIX? For example, 192.168.2.90 is currently natted to 10.0.0.4 by the pix. I want to ping directly from 192.168.2.4 to 10.0.0.4. I can certainly ping directly from 10.0.0.4 to 192.168.2.4. Please let me know if you would like to see the complete config. I hope I understand your question completely. You try to ping from one interface to another on your PIX. This URL explains how this can be done. Enable syslog server behind the PIX Could someone tell me a config that allows a server syslog (Kiwi syslog) to get behind the PIX syslogs. I have a 2K with the KIWI syslog server behind a PIX 501. I have the static command, the access group and the access-list: public static 192.104.109.92 (Interior, exterior) 192.168.15.200 netmask 255.255.255.255 0 0 Access-group local_server in external interface local_server list access permit udp any host 192.104.109.92 eq syslog Man, I can't understand it. Thanks for any help You could: 1. make a capture of port syslog traffic directed to the syslog server. 2 Terminal monitor - deny traffic showed clearly when I had not set up the firewall to forward the traffic. (Note: attention on busy firewall) 3 netstat - a on the syslog server 4. If you allow, you should be able to portscan the server on port of syslog by your firewall. 5. is your syslog capture created file? It is not created if the service never started. 6 - is the service running in the system context or perhaps another account that doesn't have the correct rights? The answers seem to indicate a service not started that seemed likely. What you describe happened to me when I had the demon also version; I went to service version and the problem has been resolved (once I opened the port.) I love the kiwi syslog. I use with Snare and BacklogIIS and receive alerts within 60 seconds to my mailbox when something bad happens. It always fools of my end users out when I call them with the problem solved when they seek always my number report the problem. Network for access to the external interface inside Hey,. I have an ASA5520 7.2 (1) I have a few probs with - which is something I struggle with that. I'm trying to hit a website of a host on the inside network that is actually hosted internally, but decides the static NAT would focus on the external interface of the firewall. Now I can see the TCP built, translation occurring at a port on the external interface, this port high dialogue to one of the static electricity would be addresses on the external interface, then that's all. There are no more entries in my journal in regards to the connection and I get not syn on the internal web server is so the connection is not back in. IP address outside 222.x.x.9 255.255.255.248 IP address inside 192.168.87.1 255.255.255.0 Static NAT to Web servers: -. public static 222.x.x.10 (Interior, exterior) 192.168.87.5 access lists access... :- list of allowed inbound tcp extended access any host 192.168.87.5 eq http Access-group interface incoming outside in Everything works fine when creating a global internet address - just not when address from inside and dynamic PAT is performed to the original address. Here's a capture session by using the following access to capture list inside and outside interfaces simultaneously permit for line of web access-list 1 scope ip host 222.222.222.10 all web access-list extended 2 line ip allow any host 222.222.222.10 on the INSIDE interface (nothing is connected to the outside) (ip addresses have been replaced by nonsense) - but address 222 is would take into account the interface static and the other is on the internal network. 316: 19:14:02.900206 192.168.87.10.2275 > 222.222.222.10.80: S 2029971541:2029971541 (0) win 64512
317: 19:14:05.973185 192.168.87.10.2275 > 222.222.222.10.80: S 2029971541:2029971541 (0) win 64512
192.168.87.10 is my client is trying to connect Someone of any witch hunt, which is stop this function work? All networks are directly attached and there is no route summary ancestral anywhere. I hope you guys can help! Concerning Paul. To my knowledge the ASA supports only hairpining on a VPN tunnel. The security apparatus does not allow traffic that is sent to an interface to go back in the direction of what she received. Can I install the exe of Firefox on a Flash DRIVE and install from there on another computer? Old IE on win XP do not allow me to install although Mozilla supports still XP. Thank you HP Envy 700 - xt desktop: How can I stop recovery of training hard and switch to disk system? Called Costco to get assistance from the technology with a desktop computer HP Envy. The tech asked me to do a system of hard drive recovery, even if I got recovery discs... The computer screen showed 100% software installation of recovery in less th Satellite A100-811 - sound no longer work after reinstallation of the system I recently bought this type of laptop. After about 2 installations of windows from the recovery cd unit... I keep having the same problem:I encounter problems or difficulties with some audio applications... especially mp3 running for example in winam How to remove names from my list "send to" when shipping or email? I have two unsolicited names that have appeared on my contacts when I try to send an E-Mail. They are NOT on my authorized contact listings, only appear when I try to send an E-Mail. When sending or transmitting by E-Mail, tHey have popped up at the [Solved] Internet Explorer 11 fails; KB3023266 fails with code 8000FFFF First publication: Good, people I just I need to get a Windows Update complex Hell, involving the error "Missing winning key component ' infamous. Fixed every reg entry manually and got an own CheckSur newspaper well, it is now past. Finally, I put eSimilar Questions
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