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Allow an internal host to have complete in and out traffic Cico 515E

Posted on 2013-11-18
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Last Modified: 2015-04-16
Hello all.  

I really can't tell completely if my PIX is blocking something for this host.  I am wanting to just allow a access list/rule to allow host 10.2.17.34 complete unfiltered access for in and out traffic.  What might a rule look like?

My access-group for in is "access-group in-FWRULE" and out is "access-group out-FWRULE".

Please let me know if you need any other information on my setup.  At first thought I am guessing that this is enough.

Thank you
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Question by:getwidth28
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by:Ernie Beek
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We'll need some more info to be able to give you advice I'm afraid.

What do the ACL's look like? Normally something like: access-list in-FWRULE permit ip host 10.2.17.34 any should be sufficient. Also, do you have an ACL going in and going out the firewall? Best practice is to only have ACL's going into an interface, not out of.
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by:getwidth28
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My in-FWRULE ones look like this:
access-list in-FWRULE extended permit tcp any host xxx.xxx.xxx.xxxeq ftp
access-list in-FWRULE extended permit tcp any host xxx.xxx.xxx.xxx eq 6346
access-list in-FWRULE extended permit tcp any host xxx.xxx.xxx.xxx eq www
access-list in-FWRULE extended permit udp any host xxx.xxx.xxx.xxx eq 6346
access-list in-FWRULE extended permit tcp any host xxx.xxx.xxx.xxx eq 123
access-list in-FWRULE extended permit udp any host xxx.xxx.xxx.xxx eq ntp
etc...

These are all of my outs:
access-list out-FWRULE extended permit tcp 10.0.0.0 255.0.0.0 any eq www
access-list out-FWRULE extended permit tcp 10.1.1.0 255.255.255.0 any eq smtp
access-list out-FWRULE extended permit ip any any
access-list out-FWRULE extended permit tcp 10.1.0.0 255.255.0.0 any eq smtp

I will try and one you suggested.
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by:Ernie Beek
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Let me know how it goes.

One more thing:
My access-group for in is "access-group in-FWRULE" and out is "access-group out-FWRULE".
How exactly are the access group commands? Are they both into an interface?

By the looks of it, in-FWRULE is going into the outside interface and out-FWRULE is going into the inside interface (or atleast they should). Am I right here?
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by:Ernie Beek
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Re-reading your question.....
You also want complete access from the outside to that machine? In that case you'll need to do some more configuring and you'll need an extra public address. Do you happen to have that?
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by:getwidth28
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I believe you are correct:
access-group in-FWRULE in interface Outside
access-group out-FWRULE in interface inside

Well I might need to expand on why I am wanting to try and make sure nothing is blocked in or out for this machine.  This is  machine that Battlefield 4 gets played on sometime, yeah I know.

When looking at the PING/latency mine does not show up.  It just shows a "-" where all of the other players have theirs showing.  The local windows firewall is turned off.  I have all traffic going through an Untangle box and I have all of the modules turned off.  Which lead me to try and make sure that the PIX isn't blocking something.  

I am guessing that something from the servers is getting blocked to my machine, I have no clue really.  I do not know what ports the game uses either, I have tried searching but couldn't find them.  Which is why I was just hoping to allow all.

So I don't need a direct path per say, like a route (is that what you were going to suggest with the public IP, which I do have some available?).
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by:Ernie Beek
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Battlefield 4.......
Hehehe, that's my first :)

The thing is, when you use a normal setup, the machine is allowed all traffic from the in- to the outside (hence the rule access-list in-FWRULE permit ip host 10.2.17.34 any) and all the return traffic on that. However traffic initiated from the outside will be blocked. Even more, you'll need that extra public IP to hook it up to the internal address of the machine to make it reachable from the outside.

Assuming the extra public is 1.1.1.2, it should be something like:

static (inside,outside) 1.1.1.2 10.2.17.34 netmask 255.255.255.255
(inside and outside are the names of your interfaces)
access-list in-FWRULE extended permit icmp any host 1.1.1.2
access-list in-FWRULE extended permit ip any host 1.1.1.2

(you realize this is tricky, completely exposing this machine to the internet)

That should about do it. Of course it's a better idea to eventually put this machine in a DMZ.
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by:getwidth28
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Roger.

Question: If at home with a regular home router/switch it works ok without having to allow stuff?  

Also so the internet will automatically know/think that the machine is directly on the internet then?  So after configuring that as so if I got to whatismyip.com it will show the new IP address?

I also suppose I could physically configure this machine manually and put it on the switch in between ATT's router and my PIX.  That way it won't even be physically touching it.  I will try yours first.  I would imagine I could turn the local firewall on and the game ping will show up.
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by:getwidth28
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whatismyip.com did show the new configure external IP address. I wouldn't have thought so for some reason. Probably just from a lack of needing to try and experience with Cicso gear/etc.  Trying to see if the ping shows up now.
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by:getwidth28
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It was still a "-".  With a risk of exposing this machine.  I still have the local firewall turned completely off.  This should mean that you should be able to ping it right?  The external IP address of this machine is 68.x.x.151.  You should also be able to bring up RDP on it.
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by:Ernie Beek
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Question: If at home with a regular home router/switch it works ok without having to allow stuff?
Simply put: a regular home router/switch is not a firewall :) A PIX (amongst others) are way more strict. Packets don't come in unless you configure the device to allow it.

Also so the internet will automatically know/think that the machine is directly on the internet then?  So after configuring that as so if I got to whatismyip.com it will show the new IP address?
That is correct. Through that static you defined the IP with which that particular machine will show on the internet (and in combination with those ACL entries, it WILL show :)

I also suppose I could physically configure this machine manually and put it on the switch in between ATT's router and my PIX.  That way it won't even be physically touching it.
That assumption is also correct. The effect would be the same.

Let me know how it works out.
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by:Ernie Beek
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Ah, crosspost.

I just took the liberty of hiding your publi IP (no need to expose that here).
I'll have a look.
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by:Ernie Beek
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Hm, can't reach it. No ping, no RDP or anything.

Could you post a complete config? Just sanitize it a bit, removing (part of) the public IP's, username/passwords etc.
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by:getwidth28
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defense(config)# show config
: Saved
: Written by enable_15 at 10:16:xxx.776 EST Mon Nov 18 2013
!
PIX Version 7.2(3)
!
hostname defense
domain-name woodmclaw.com
enable password xxxxx/ encrypted
names
name xxx.1.2.74 nuno
name xxx.1.1.3 sqlserver
name xxx.1.1.56 apollo
name xxx.1.1.7 WoodenMS1
name xxx.1.1.19 WoodenEX1
name xxx.1.1.26 WoodenBB
name xxx.1.1.6 WoodenOmega
name xxx.2.17.7 bench1
name xxx.2.17.27 dvanhatten
name xxx.1.1.18 filetransfer
name xxx.2.17.31 cbutler2
name xxx.1.1.58 stratamas01
name xxx.1.2.3 WoodenTMEEG
name xxx.1.1.8 WoodenTS1
name xxx.1.1.59 woodenzix1
name xxx.1.1.60 liquidfiles
name xxx.2.18.26 dking
name xxx.1.1.11 WoodenSQL1
name xxx.2.17.34 Owner23-PC
dns-guard
!
interface Ethernet0
 nameif Outside
 security-level 0
 ip address xxx.xxx.xxx.131 255.255.255.128
!
interface Ethernet1
 nameif inside
 security-level 100
 ip address xxx.2.200.3 255.255.255.0
!
interface Ethernet2
 shutdown
 no nameif
 no security-level
 no ip address
!
passwd xxxxxx/ encrypted
boot system flash:/
boot system flash:/pix723.bin
ftp mode passive
clock timezone EST -5
clock summer-time EDT recurring
dns domain-lookup inside
dns server-group DefaultDNS
 name-server xxx.1.1.12
 name-server xxx.1.1.13
 domain-name woodmclaw.com
dns server-group default
 domain-name woodmaclaw.local
dns-group default
access-list in-FWRULE extended permit tcp any host xxx.xxx.xxx.135 eq ftp
access-list in-FWRULE extended permit tcp any host xxx.xxx.xxx.131 eq 6346
access-list in-FWRULE extended permit tcp any host xxx.xxx.xxx.135 eq www
access-list in-FWRULE extended permit udp any host xxx.xxx.xxx.131 eq 6346
access-list in-FWRULE extended permit tcp any host xxx.xxx.xxx.131 eq 123
access-list in-FWRULE extended permit udp any host xxx.xxx.xxx.131 eq ntp
access-list in-FWRULE extended permit tcp any host xxx.xxx.xxx.131 eq 2703
access-list in-FWRULE extended permit tcp any host xxx.xxx.xxx.131 eq echo
access-list in-FWRULE extended permit tcp any host xxx.xxx.xxx.131 eq 24441
access-list in-FWRULE extended permit tcp any host xxx.xxx.xxx.131 eq 6277
access-list in-FWRULE extended permit tcp any host xxx.xxx.xxx.131 eq domain
access-list in-FWRULE extended permit tcp any host xxx.xxx.xxx.131 eq 81
access-list in-FWRULE extended permit tcp any host xxx.xxx.xxx.131 eq 49731
access-list in-FWRULE extended permit tcp any host xxx.xxx.xxx.131 eq rtsp
access-list in-FWRULE extended permit tcp any host xxx.xxx.xxx.131 eq 1755
access-list in-FWRULE extended permit udp any host xxx.xxx.xxx.131 eq 5004
access-list in-FWRULE extended permit udp any host xxx.xxx.xxx.131 eq 5005
access-list in-FWRULE extended permit udp any host xxx.xxx.xxx.131 eq 1755
access-list in-FWRULE extended permit tcp any host xxx.xxx.xxx.131 eq 8080
access-list in-FWRULE extended permit tcp any host xxx.xxx.xxx.131 eq 45068
access-list in-FWRULE extended permit tcp any host xxx.xxx.xxx.131 eq 45111
access-list in-FWRULE extended permit tcp any host xxx.xxx.xxx.131 eq 45072
access-list in-FWRULE extended permit tcp any host xxx.xxx.xxx.131 eq 20696
access-list in-FWRULE extended permit udp any host xxx.xxx.xxx.131 eq 20696
access-list in-FWRULE extended permit tcp any host xxx.xxx.xxx.140 eq https
access-list in-FWRULE extended permit tcp any host xxx.xxx.xxx.140 eq smtp
access-list in-FWRULE extended permit tcp any host xxx.xxx.xxx.140 eq www
access-list in-FWRULE extended permit tcp host 74.93.209.150 host xxx.xxx.xxx.141 eq ssh
access-list in-FWRULE extended permit tcp host 74.93.209.150 host xxx.xxx.xxx.141 eq www
access-list in-FWRULE extended permit tcp host 69.63.144.19 host xxx.xxx.xxx.141 eq ssh
access-list in-FWRULE extended permit tcp host 69.63.144.19 host xxx.xxx.xxx.141 eq www
access-list in-FWRULE extended permit icmp any any echo-reply
access-list in-FWRULE extended permit icmp any any time-exceeded
access-list in-FWRULE extended permit icmp any any echo
access-list in-FWRULE extended permit tcp any host xxx.xxx.xxx.141 eq www
access-list in-FWRULE extended permit tcp host 67.106.244.194 host xxx.xxx.xxx.136 eq 5632
access-list in-FWRULE extended permit tcp host 67.106.244.194 host xxx.xxx.xxx.136 eq pcanywhere-data
access-list in-FWRULE extended permit tcp host 216.27.2xxx.178 host xxx.xxx.xxx.139 eq 3389
access-list in-FWRULE extended permit tcp any host xxx.xxx.xxx.132
access-list in-FWRULE extended permit tcp any host xxx.xxx.xxx.137
access-list in-FWRULE extended permit tcp host 216.27.204.78 host xxx.xxx.xxx.139 eq 3389
access-list in-FWRULE extended permit tcp any host xxx.xxx.xxx.143
access-list in-FWRULE extended permit tcp host 68.1xxx.109.216 host xxx.xxx.xxx.136 eq 5632
access-list in-FWRULE extended permit tcp host 68.1xxx.109.216 host xxx.xxx.xxx.136 eq pcanywhere-data
access-list in-FWRULE extended permit tcp host 68.1xxx.109.216 host xxx.xxx.xxx.136 eq 3389
access-list in-FWRULE extended permit tcp any host xxx.xxx.xxx.145
access-list in-FWRULE extended permit tcp any host xxx.xxx.xxx.135
access-list in-FWRULE extended permit tcp host 216.54.159.2 host xxx.xxx.xxx.146 eq 3389
access-list in-FWRULE extended permit tcp any host xxx.xxx.xxx.147 eq smtp
access-list in-FWRULE extended permit tcp any host xxx.xxx.xxx.147
access-list in-FWRULE extended permit tcp host 173.165.54.177 host xxx.xxx.xxx.148 eq smtp
access-list in-FWRULE extended permit tcp host 12.47.252.252 host xxx.xxx.xxx.148 eq smtp
access-list in-FWRULE extended permit tcp host 24.106.96.158 host xxx.xxx.xxx.148 eq smtp
access-list in-FWRULE extended permit tcp host 66.36.55.106 host xxx.xxx.xxx.139 eq 3389
access-list in-FWRULE extended permit tcp any host xxx.xxx.xxx.149
access-list in-FWRULE extended permit tcp any host xxx.xxx.xxx.150
access-list in-FWRULE extended permit ip host Owner23-PC any
access-list in-FWRULE extended permit icmp any host xxx.xxx.xxx.151
access-list in-FWRULE extended permit ip any host xxx.xxx.xxx.151
access-list nonat extended permit ip xxx.1.0.0 255.255.0.0 192.168.55.0 255.255.255.0
access-list out-FWRULE extended permit tcp xxx.0.0.0 255.0.0.0 any eq www
access-list out-FWRULE extended permit tcp xxx.1.1.0 255.255.255.0 any eq smtp
access-list out-FWRULE extended permit ip any any
access-list out-FWRULE extended permit tcp xxx.1.0.0 255.255.0.0 any eq smtp
access-list in-FWRUL extended permit tcp host 70.45.204.46 host xxx.xxx.xxx.141 eq ssh
access-list in-FWRUL extended permit tcp host 70.45.204.46 host xxx.xxx.xxx.141 eq www
pager lines 24
logging enable
logging buffer-size 18096
logging monitor debugging
logging buffered informational
logging trap warnings
logging history emergencies
logging asdm informational
mtu Outside 1500
mtu inside 1500
ip audit name IN-IDS attack action alarm drop reset
ip audit name IN-IDS-INFO info action drop
ip audit interface Outside IN-IDS-INFO
ip audit interface Outside IN-IDS
icmp unreachable rate-limit 1 burst-size 1
icmp permit any Outside
icmp permit any inside
asdm image flash:/asdm-523.bin
asdm location xxx.xxx.xxx.130 255.255.255.255 Outside
asdm location xxx.xxx.xxx.138 255.255.255.255 Outside
no asdm history enable
arp timeout 14400
global (Outside) 1 interface
nat (inside) 1 0.0.0.0 0.0.0.0
static (inside,Outside) tcp xxx.xxx.xxx.141 ssh WoodenMS1 ssh netmask 255.255.255.255
static (inside,Outside) tcp xxx.xxx.xxx.141 www WoodenMS1 www netmask 255.255.255.255
static (inside,Outside) tcp xxx.xxx.xxx.140 https WoodenEX1 https netmask 255.255.255.255
static (inside,Outside) tcp xxx.xxx.xxx.131 20696 bench1 20696 netmask 255.255.255.255
static (inside,Outside) tcp xxx.xxx.xxx.140 smtp WoodenMS1 smtp netmask 255.255.255.255
static (inside,Outside) tcp xxx.xxx.xxx.148 smtp WoodenEX1 smtp netmask 255.255.255.255
static (inside,Outside) xxx.xxx.xxx.135 apollo netmask 255.255.255.255
static (inside,Outside) xxx.xxx.xxx.136 WoodenOmega netmask 255.255.255.255
static (inside,Outside) xxx.xxx.xxx.139 WoodenBB netmask 255.255.255.255
static (inside,Outside) xxx.xxx.xxx.137 dvanhatten netmask 255.255.255.255
static (inside,Outside) xxx.xxx.xxx.145 cbutler2 netmask 255.255.255.255
static (inside,Outside) xxx.xxx.xxx.146 stratamas01 netmask 255.255.255.255
static (inside,Outside) xxx.xxx.xxx.140 WoodenMS1 netmask 255.255.255.255
static (inside,Outside) xxx.xxx.xxx.132 WoodenTS1 netmask 255.255.255.255
static (inside,Outside) xxx.xxx.xxx.147 woodenzix1 netmask 255.255.255.255
static (inside,Outside) xxx.xxx.xxx.143 liquidfiles netmask 255.255.255.255
static (inside,Outside) xxx.xxx.xxx.149 dking netmask 255.255.255.255
static (inside,Outside) xxx.xxx.xxx.150 WoodenSQL1 netmask 255.255.255.255
static (inside,Outside) xxx.xxx.xxx.151 Owner23-PC netmask 255.255.255.255
access-group in-FWRULE in interface Outside
access-group out-FWRULE in interface inside
route Outside 0.0.0.0 0.0.0.0 xxx.xxx.xxx.129 1
route inside 192.168.55.0 255.255.255.0 xxx.1.255.1 1
route inside xxx.1.0.0 255.255.0.0 xxx.2.200.1 1
route inside xxx.2.0.0 255.255.0.0 xxx.2.200.1 1
route inside xxx.2.17.0 255.255.255.0 xxx.2.200.1 1
route inside xxx.2.18.0 255.255.255.0 xxx.2.200.1 1
route inside xxx.1.0.0 255.255.0.0 xxx.1.1.62 1
timeout xlate 3:00:00
timeout conn 1:00:00 half-closed 0:10:00 udp 0:02:00 icmp 0:00:02
timeout sunrpc 0:10:00 h323 0:05:00 h225 1:00:00 mgcp 0:05:00 mgcp-pat 0:05:00
timeout sip 0:30:00 sip_media 0:02:00 sip-invite 0:03:00 sip-disconnect 0:02:00
timeout uauth 0:05:00 absolute
http server enable
http xxx.2.17.0 255.255.255.0 inside
http xxx.2.0.0 255.255.255.0 inside
http 0.0.0.0 0.0.0.0 Outside
http xxx.1.0.0 255.255.0.0 inside
snmp-server host inside nuno community jupitar78
no snmp-server location
no snmp-server contact
snmp-server community jupitar78
snmp-server enable traps syslog
sysopt connection tcpmss 1280
telnet xxx.1.0.0 255.255.0.0 inside
telnet xxx.2.0.0 255.255.255.0 inside
telnet xxx.2.17.0 255.255.255.0 inside
telnet timeout 20
ssh timeout 20
console timeout 0
!
class-map inspection_default
 match default-inspection-traffic
!
!
policy-map global_policy
 class inspection_default
policy-map type inspect dns migrated_dns_map_1
 parameters
  message-length maximum 512
!
service-policy global_policy global
username bpumphrey password xxxxx.xxxxx encrypted privilege 0
smtp-server xxx.1.1.22
prompt hostname context
Cryptochecksum:1185b61899edaa2c9a2bc751c210e7a8
defense(config)#
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by:Ernie Beek
Comment Utility
A few things I see:
access-list in-FWRULE extended permit ip host Owner23-PC any
Shouldn't be there (on the outside ACL).

route inside xxx.2.0.0 255.255.0.0 xxx.2.200.1 1
route inside xxx.2.17.0 255.255.255.0 xxx.2.200.1 1

Do those two networks (xxx.2.0.0 255.255.0.0 and xxx.2.17.0 255.255.255.0) overlap?

And of course: route inside xxx.2.17.0 255.255.255.0 xxx.2.200.1 1. So the route to your machine (Owner23-PC) is through an extra hop (router or something)?
Did you check if that is maybe blocking something?

Also, have a look at the (ASDM) logs when trying to make some connections. Perhaps something shows up it there that might give us a clue.
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by:getwidth28
Comment Utility
I have a few vlans.  If my memory serves me correctly it was so that local traffic could get to those.  That doesn't make sense as I say that because my Dell Layer 3 switch is setup to do that part.  

Oh I remember.  I have a VPN 3000 concentrator and needed to send that traffic to it.  That's what they are for.

To answer your overlap question I do not believe so.  I have a xxx.2.0.0/16 and the xxx.2.17.0 is a /24.  Well I guess the log shows it too.  They are two subnets/vlans.  One is servers and other clients.

Extra hop or something?
Yes, through the Dell Layer 3 switch.  Good point, that could be blocking something hey?

ADSM logs
It always seems like a pain to look through these things, or to remember how to get to them.  Overall I got this device a long time ago to start my knowledge on Cisco stuff just because they are main stream.  It is hard to convince myself that these are a better choice than other options that are GUI by design.  I will look at the ADSM logs.
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by:Ernie Beek
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Please do. Got to go offline for a while, but I'll try to check in later this evening.
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by:getwidth28
Comment Utility
I looked through the GUI config of the Dell 6248 and nothing popped out at me.  I'll post back later today with maybe a few screenshots of some of the config.
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by:getwidth28
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I noted the IP address of a BF4 server and filtered the log out on ASDM.  The Cisco is filtering it out.

Log
I searched and try a handful of IMCP entries in the config but I just can't get any to seemingly work.  

I tried putting in the IP address of the BF4 server too.

Here is a show config | grep icmp

access-list in-FWRULE extended permit icmp any any echo-reply
access-list in-FWRULE extended permit icmp any any time-exceeded
access-list in-FWRULE extended permit icmp any any echo
access-list in-FWRULE extended permit icmp any host xxx.xxx.xxx.151
access-list in-FWRULE extended permit icmp any any source-quench
access-list in-FWRULE extended permit icmp any any unreachable
access-list in-FWRULE extended permit icmp any host xxx.xxx.xxx.131 echo
access-list in-FWRULE extended permit icmp any host xxx.xxx.xxx.135 echo
access-list in-FWRULE extended permit icmp any host 192.3.154.94 echo
access-list out-FWRULE extended permit icmp any any
access-list in-FWRUL extended permit icmp any any echo-reply
access-list in-FWRUL extended permit icmp any any source-quench
access-list in-FWRUL extended permit icmp any any unreachable
access-list in-FWRUL extended permit icmp any any time-exceeded
icmp unreachable rate-limit 1 burst-size 1
icmp permit any Outside
icmp permit any inside
timeout conn 1:00:00 half-closed 0:10:00 udp 0:02:00 icmp 0:00:02
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Ernie Beek earned 500 total points
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Ok, first try to allow all icmp types to see if that works:
access-list in-FWRULE extended permit icmp any any
access-list out-FWRULE extended permit icmp any any
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