Access list ID # on a PIX firewall

Similar Questions

• How can I clear counters access-list on a pix firewall

  How can I erase the hitcounts on an on a pix firewall access list without resetting the pix?

  It would be clear access-list on a router counters.

  Thanks in advance

  Steve

  access list counters Clear

• PIX Firewall 525 access list problem

  Hello.

  I have the following problem. After insertion of an access list, despite seeing the packages associated with the list, they do not "match", that is, it is as if the list wasn't doing his job.

  Who can be the cause of this behavior?

  PIX 525 model

  IOS 6.3 (4)

  Thank you.

  Marulanda Ramiro Z.

  Are all of syslogs sent properly to the remote host? If so, I would say that the udp connection is never closed by the PIX. Let's say that the connection never hit the timeout in the pix config. If the connection remains open and doesnot increments the hit count for your access list. I have a PIX that makes the same behavior.

  The increase in the number of accesses is also based on the connection and not on each packet passing through the PIX.

  You can use a debug command to see the packets through the PIX.

  HTH

  Mike

• PIX 501 ICMP access list Question

  According to the book, I have the pix and firewall that I know of dealing with routers and switches access lists define what traffic is allowed outside the network. With pix access lists can only be applied one way, to the interface they enter, not leaving. It's my understanding, but when I do an ICMP command:

  PIX1 (config) # access - list ethernet1 permit icmp any any echo response

  PIX1 (config) # access - list icmp permitted ethernet1 everything all inaccessible

  Access-group ethernet1 PIX1 (config) # interface inside

  This does not work, but if I apply the access group to the external interface it works. I understand why it is like that.

  Thank you

  This works because the pix is not aware of session state for the way icmp traffic that it does for tcp and udp.

  By default, less access to a high to an interface is allowed, unless you have an acl applies to the interface of higer - then only what the acl permits will be allowed. So you can send outbound icmp echo request. However, for the response to be returned, you must allow that explicitly in an acl that is applied on the external interface, because the pix won't allow any outside traffic by default.

  Even for icmp unreachable, although I want to put in custody to be part of the config. Allow only the unattainable due to the ttl expired to facilitate detection of mtu path, not all unachievable.

  Let me know if it helps.

• Helps to configure the pix firewall 507e for e-mail access

  Dear experts,

  I called our provider cisco and ask for technical help regarding our current problem as we know on our set-up.

  She told me to convey my concern to the Cisco TAC. My friends told me to post it here under discussion Netpro.

  I am writing today to ask a few questions about my pix 506 firewall configuration.

  To give the implementation Details pls find below and attached seizures of the show tech command.

  We have subscribed the service DSL and Singtel give us 2 addresses valid public IP that is 203.125.100.246 255.255.255.252.

  I used 203.125.100.246 for my external interface of my firewall pix and singtel assign 203.125.100.245 to the DSL router. In this case, we will only use PAT for internet connection.

  Currently he works very well our Mail Server is resided in the Singtel Office having the ip address of 165.21.111.22. Not work that we can receive and deliver electronic mail on the internet, and we can also surf the internet.

  Now we intend to put our mail in our own network server, because sometimes we encounter slowness on receiving and sending emails. Pls check on the IP address below

  Our LAN IP address is 192.168.1.X 255.255.255.0

  default gateway, which is the IP address of the firewall pix inside interface is 192.168.1.1

  The new mail server IP address is 192.168.1.4.

  Here's what I've done so far.

  I created a static mapping for my mail server is here

  public static 203.125.100.246 (inside, outside) 192.168.1.4 mask subnet 255.255.255.255 0 0

  and modify the access list to allow smtp on our networks.

  192.168.2.0 ip access list ACL_OUT permit 255.255.255.0 any

  ACL_OUT list access permit icmp any host 203.125.100.246

  ACL_OUT list access permit tcp any host 203.125.100.246 eq smtp

  ACL_OUT list access permit tcp any host 203.125.100.246 eq pop3

  ACL_OUT list access permit udp any host 203.125.100.246 EQ field

  Access-group ACL_OUT in interface outside

  After doing it... I have loss all the internet connection, the email does not work... so I deleted immediately. because it causes network failure.

  I have rather edit it and create a static map like this.

  public static 203.125.100.246 (exterior, Interior) 192.168.1.4 mask subnet 255.255.255.255 0 0

  and modify the access list to allow smtp on our networks.

  192.168.2.0 ip access list ACL_OUT permit 255.255.255.0 any

  ACL_OUT list access permit icmp any host 203.125.100.246

  ACL_OUT list access permit tcp any host 203.125.100.246 eq smtp

  ACL_OUT list access permit tcp any host 203.125.100.246 eq pop3

  ACL_OUT list access permit udp any host 203.125.100.246 EQ field

  Access-group ACL_OUT in interface outside

  Saw what it did not cause a failure of network or interruption. I thought that it will already work with the config, I keep it and this is the current config now... But when I change the POP and SMTP settings so that it points on 192.168.1.4 which is the new mail server on our LAN. his does not work.

  To this day, we are in a discussion with my boss or not possible to create a static mapping on our new mail server address 192.168.1.4 to 203.125.100.246 which is already assigned as external IP address and is used for PAT.

  We are asking your help to know how to set up our internal mail server statically match our public IP address that is already used for PAT.

  Please check attached the tech release see the.

  Thank you very much!

  I'd appreciate your quick response.

  Your truth.

  Dennis Pelea

  Dennis,

  Can you please send to me your configuration full pix (unscrew sensitive information) to [email protected] / * /

  I am puzzled, why this configuration does not for you. I have several clients who use a public ip address for external intf more than several other services that use this single ip address.

  Thank you / Jay

• How PIX cross access lists?

  I'm new with PIX.

  I would like to know how this fw through access lists. I mean, it's in what order it checks the rules. I guess it can be quite an important issue if you want to keep performance with more than 400 rules and a flow of traffic.

  I thank the of for any comment.

  Hello

  the pix treats the ACL from top to bottom. Put the rules used most frequently at the top. After a match, the pix stop processing the ACL.

  Kind regards

  Tom

• FWSM firewall context Access-List entry Limitation

  We have recently experienced an error on one of the firewall settings that it has reached the maximum access list entry. Anyone know what is the limit of the ACL entry by context or where can I find the documentaton for her. No work around to this issue? Thanks in advance.

  Hello

  This value changes depending on which version of the FWSM code you run - and Cisco gets not specific on how the FWSM calculates entered ACE to determine the number of entries you have on your own.

  If you run the command (syntax may be different in 3.x code):

  See the np 3 acl County property

  You get a result that looks like this:

  -CLS rule current account-

  CLS filter rule Count: 0

  CLS rule Fixup count: 11

  CLS is Ctl rule Count: 0

  CLS AAA rule count: 2187

  CLS is given rule Count: 0

  CLS Console rule count: 7

  Political CLS NAT rule Count: 0

  County of CLS ACL rule: 3491

  Add CLS uncommitted ACL: 0

  CLS ACL Del uncommitted: 0

  -CLS rule MAX - account

  CLS filter MAX: 3584

  CLS Fixup MAX: 32

  CLS is Ctl rule MAX: 716

  CLS is given rule MAX: 716

  AAA CLS MAX rule: 5017

  CLS Console rule MAX: 2150

  Political CLS NAT rule MAX: 3584

  CLS ACL rule MAX: 56627

  The counts are your real numbers, MAX is the maximum you can have. AAA rules are numbered for how As you can have applied altogether with your orders of "aaa game. For your question, it seems that you should check your 'CLS ACL rule Count' and 'CLS ACL rule MAX' and make sure you get not close to that number. If you are - try to limit the number of host entries (use the networks) where possible and try to use ranges of ports instead of individual ports in your access list statements.

  I'll try to find the syntax 7.x and post here later.

  -Jason

  Rate if this can help.

• Pix access lists

  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.

• PIX 535 and access lists

  Hello

  We have a Cisco PIX 535. By default, traffic on one more secure interface with a lower security level is allowed, what is?

  OK, I have a doubt, I had to define an access list entry to allow a telnet connection between inside and outside. There is no rule against that traffic, but without this rule the telnet connection cannot be established.

  And my question is: why? It is not supposed to be allowed by default?

  Thanks in advance.

  Higher default-> bottom is allowed... However, once you add instructions permit, it is implicitly deny all at the end. So, if you allow ftp and ssl web... so by default, any other traffic is denied and you need to be precise with your permit.

• PIX 525 access-list

  I know it must be simple, however, I have some difficulty doing that work. I use version 5.3

  I'm trying to block access to the internet at 172.16.39.X. whatever it is on this network should NOT be able to access the internet.

  I use the list of access and access - group commands but I must have some syntax errors or something as there doesn't seem to be blocking access. Could someone provide a concrete syntax for this address with 255.255.255.0 subnet so I can see if perhaps I simply make a mistake in the entry. I am new to PIX so I wouldn't be really surprised.

  Thank you

  Dave

  You can do this in several ways:

  1. you can exclude this your NAT range. This will not allow this range out to the internet.

  2. on your inside interface, apply this rule:

  insideACL list access deny ip 172.16.39.0 255.255.255.0 any

  insideACL ip access list allow a whole

  I hope this helps.

• Question of Access-list PIX

  The following access list works on a cisco router, however, the list will not work on the PIX (I change the mask to wildcards to a for the PIX subnet mask).

  Router (works)

  access allowed test tcp 192.168.1.50 list 0.0.0.5 host 10.10.10.1 eq 80

  PIX (does not work)

  access list permit test tcp 192.168.1.50 0.0.0.10 host 10.10.10.1 eq 80

  I get the error on the PIX:

  ERROR: Source, mask <192.168.1.50, 0.0.0.10="">address not pair

  Is it possible to group IP addresses as well as on the PIX in a similar way as Cisco IOS?

  Thank you!

  Domo Arigato!

  You can use

  192.168.1.48 255.255.255.248 for the source or if they are many hosts you must insert an individual entry for each source.

  Of course you can refuse the host 192.168.1.49 and

  Let the others allow 192.168.1.48 255.255.255.248

• New to pix, need help with "debug access list of all the" command

  I have a pix 515 v6.3. I am tring to use then "debug access list of all the" command to see what traffic is stopped by my access list. However, I don't get any output. I turn execution of the command, but nothing happens. Other debug commands give the console. Perhaps, I do not understand what "debug to access list of all the" is used for. Any help that can be provided would be greatly appreciated.

  Tim

  Also try following the commands of logging

  LOGG on

  LOGG buff 7

  term Lun

  M.

• Access list in a PIX?

  I have the access-list applied on my "external" my PIX interface and I'm trying to make it so pings coming from the 'inside' book, but those who come of the? outside? in case of failure.

  access-list outside permit icmp any any echo response

  list a whole outside access allowed icmp time-exceeded

  access outside allowed icmp list everything all inaccessible

  Using a VPN, you can create a rule/filter and apply it to the tunnel which verifies the established bit to be set. Is it possible to do this with a list of access a PIX?

  I have a 6.3 (5) PIX 501

  If you add (in config mode)

  ICMP deny everything outside

  The above will disable any ping/trace route or network scans of the internet (that is, your network will be in stealth mode), if you also add

  access-list outside permit icmp any any echo response

  list a whole outside access allowed icmp time-exceeded

  access outside allowed icmp list everything all inaccessible

  outside access-group in external interface

  This will then allow icmp traffic going out to the internet, BUT don't be do not allow anyone to ping/trace route internet or analyze your network!

  You can test this by visiting http://www.grc.com and using the program "shields up" to analyze your network. Try first without icmp deny out of any instruction and then with the statement added to your configuration.

  Hope this helps

  Jay

• PIX firewall problem

  I have two servers, one in pix inside and the other in the demilitarized zone. I wanted to set them up so that they can communicate with routers and switches

  Located outside the pix firewall.

  My inner Server works fine, able to go Internet and able to comminicate with all devices located outside the Pix Firewall. Here is reference configuration

  of insideserver.

  outside_acl list extended access allowed host x.223.188.0 255.255.255.0 172.28.32.50 ip

  outside_acl list extended access permit ip host host x.219.212.217 172.28.32.50

  access-list extended sheep permit ip host 172.28.32.50 host x.219.212.217

  access-list extended sheep permit ip host 172.28.32.50 x.223.188.0 255.255.255.0

  inside_acl list extended access permit ip host 172.28.32.50 all

  But my DMZ server does not work. However, I made the same configuration with respect to the server on the inside. Not able to communicate with outside DMZ server

  network.

  outside_acl list extended access allowed host x.223.188.0 255.255.255.0 172.28.92.72 ip

  outside_acl list extended access permit ip host host x.219.212.217 172.28.92.72

  access-list extended sheep permit ip host 172.28.92.72 host x.219.212.217

  access-list extended sheep permit ip host 172.28.92.72 x.223.188.0 255.255.255.0

  dmz_acl list extended access permit ip host 172.28.92.72 all

  If I create a static entry for your DMZ SNMP server.

  static (edn, external) 172.28.92.72 172.28.92.72 netmask 255.255.255.255

  He starts to communicate with external devices, but stops Internet run on this server. same configuration

  works with the server on the inside, but not with dmz server.

  NAT (inside) 0 access-list sheep

  NAT (inside) 3 172.28.32.0 255.255.255.0

  NAT (dmz) 3 172.28.92.0 255.255.255.0

  Global interface 3 (external)

  Your static entry is bypassing your nat (dmz) 3 entry. You can do NAT exemption instead, as you do to your home

  1. remove the static entry (followed by clear xlate)

  Add - nat 0 access-list sheep (dmz)

  I suggest to use two acl different sheep, one for each interface.

  Ex: nonat_inside

  nonat_dmz

• As a transparent (bypass) PIX firewall?

  I'm doing a school project that involves the use of a firewall PIX between the ISP and the edge of the network router. The goal is to make the network as secure as possible using only the PIX. Ideally, I'd like that it if an attacker could not even see the PIX was there. It made me think if the PIX can act as a transparent firewall, otherwise said, not having all the IPS assigned to the interfaces nor do no routing, simply inspect/forward traffic between inside/outside interface. Otherwise, I'll have to create a small 30 between the ISP and the PIX from the outside, and the border router and the route PIX inside and between them.

  If I do the latter, can you give me advice on how to secure more PIX? Here is my config:

  interface ethernet0 10full

  interface ethernet1 100full

  ethernet0 nameif outside security0

  nameif ethernet1 inside the security100

  activate the password encrypted x

  passwd encrypted x

  pixfirewall hostname

  domain pix.local

  fixup protocol dns-length maximum 512

  No 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

  fixup protocol smtp 25

  fixup protocol sqlnet 1521

  fixup protocol tftp 69

  names of

  access-list 100 permit icmp any any echo response

  pager lines 24

  Outside 1500 MTU

  Within 1500 MTU

  IP 10.0.0.1 address outside 255.255.255.252

  IP address inside 10.0.0.5 255.255.255.252

  IP verify reverse path to the outside interface

  IP verify reverse path inside interface

  IP audit name AttackPolicy attack action alarm down reset

  IP audit name InfoPolicy info action alarm down reset

  verification of IP outside the InfoPolicy interface

  interface IP outside the AttackPolicy check

  verification of IP within the InfoPolicy interface

  verification of IP within the AttackPolicy interface

  disable signing verification IP 2000

  disable signing verification IP 2004

  don't allow no history of pdm

  ARP timeout 14400

  NAT (inside) 0 0.0.0.0 0.0.0.0 0 0

  Access-group 100 in external interface

  Route outside 0.0.0.0 0.0.0.0 10.0.0.2 1

  Timeout xlate 03:00

  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

  Timeout, uauth 0:05:00 absolute

  GANYMEDE + Protocol Ganymede + AAA-server

  RADIUS Protocol RADIUS AAA server

  AAA-server local LOCAL Protocol

  No snmp server location

  No snmp Server contact

  SNMP-Server Community public

  No trap to activate snmp Server

  enable floodguard

  Telnet timeout 5

  SSH timeout 5

  Console timeout 5

  Terminal width 80

  Any help is appreciated! Thank you!

  Chris

  The PIX can now act as a layer 2 firewall, this feature will be in the next major version of the code should be out later this year. For now you will need a small subnet between the ISP and the PIX.

  If you do not want to see the PIX then the first thing is to make sure it does not meet the pings. Use the "icmp" command (http://www.cisco.com/univercd/cc/td/doc/product/iaabu/pix/pix_sw/v_63/cmdref/gl.htm#wp1026574) for. Make sure you allow ICMP unreachable to the outside interface well and Path MTU Discovery can work properly (http://www.cisco.com/warp/public/105/38.shtml#pmtud_fail).

  Other than that, it seems very good, pretty standard.