topic Help config ASA5510 in Network Security

Help config ASA5510

jerrybu01 — Tue, 12 Mar 2019 01:14:31 GMT

I have a range ip: 192.168.172.1/24 and default staff can access full internet.

Range 1. Access full internet

ASA5510(config)# object network Full-internet-Access

ASA5510(config-network-object)# range 192.168.172.1 192.168.172.25

ASA5510(config-network-object)# nat (inside,outside) dynamic interface

ASA5510(config-network-object)# access-list inside_access_out permit ip object Full-internet-Access any

Range 2. Deny internet but allow mail, some webpages, https

ASA5510(config)# object network Deny-internet-Access

ASA5510(config-network-object)# range 192.168.172.26 192.168.172.254

ASA5510(config-network-object)# nat (inside,outside) dynamic interface

ASA5510(config-network-object)# access-list Inside_in deny ip object Deny-internet-Access any

ASA5510(config)#access-list inside_in permit tcp any any eq 25

ASA5510(config)#access-list inside_in permit tcp any any eq 110

ASA5510(config)#access-group access_out in interface inside

regex url1 "vnexpress\.net"

regex url2 "tuoitre\.net"

regex url3 “vdict\.com”

regex url4 “translate\.google\.com\.vn”

class-map type regex match-any URL

match regex url1

match regex url2

match regex url3

match regex url4

class-map type inspect http match-all

class3

match request header host regex class URL

access-list inside_in extended deny tcp object Deny-internet-Access any eq 80

access-list inside_in extended permit tcp any any eq 80

class-map

classhttp

match access-list inside_in

policy-map type inspect

po-http

parameters

class

class3

drop-connection log

policy-map global_policy

class

classhttp

inspect http

po-http

service-policy global_policy global

- Range ip 1: i can access full internet -->OK

- Range ip 2: i can't access internet (block all) --> i have a problem, do you show me how to config like my request?

Help config ASA5510

julomban — Fri, 15 Mar 2013 19:23:37 GMT

Nguyen,

The problem with the range 2 is the order of the ACL's:

ASA5510(config)# access-list Inside_in deny ip object Deny-internet-Access any

ASA5510(config)#access-list inside_in permit tcp any any eq 25

ASA5510(config)#access-list inside_in permit tcp any any eq 110

The way to ASA process/check the ACL's is by order, if there is a deny first then all traffic is going to be denied.

The ACL's should look like this:

ASA5510(config)#access-list inside_in permit tcp any any eq 25

ASA5510(config)#access-list inside_in permit tcp any any eq 110

ASA5510(config)# access-list Inside_in deny ip object Deny-internet-Access any

With the above order all traffic on ports 25/110 will be allowed and everything else dropped.

Please let me know if that helps

Regards,

Juan Lombana

Please rate helpful posts.

Re: Help config ASA5510

jerrybu01 — Sat, 16 Mar 2013 02:48:35 GMT

I configured but it's not running, the ASA cli i show above

ASA5510# show run

: Saved

ASA Version 8.3(1)

hostname ASA5510

domain-name lohoi.local

enable password *******

passwd *************** encrypted

names

interface Ethernet0/0

description C_M

nameif outside

security-level 0

ip address 10.0.0.2 255.255.255.248

interface Ethernet0/1

description C_R

nameif inside

security-level 100

ip address 172.16.17.2 255.255.255.240

interface Ethernet0/2

shutdown

no nameif

no security-level

no ip address

interface Ethernet0/3

shutdown

no nameif

no security-level

no ip address

interface Management0/0

description Management

nameif management

security-level 100

ip address 192.168.1.1 255.255.255.0

regex url1 "vnexpress\.net"

regex url2 "flpvietnam\.com"

ftp mode passive

clock timezone ICT 7

dns server-group DefaultDNS

domain-name lohoi.local

object network obj-any

subnet 0.0.0.0 0.0.0.0

object network ftpserver

host 192.168.100.90

description FTP server

object network remote_desktop

host 192.168.100.111

object network remote_vnc

host 192.168.100.100

object network FullAccess

range 192.168.100.1 192.168.100.25

object network DenyAccess

range 192.168.100.26 192.168.100.254

access-list 101 extended permit icmp any any

access-list 101 extended permit icmp any any echo-reply

access-list 101 extended permit tcp any any

access-list outside_access_in extended permit tcp any object ftpserver eq ftp

access-list outside_access_in extended permit tcp any host 192.168.100.111 eq 3389

access-list outside_access_in extended permit tcp any host 192.168.100.100 eq 5900

access-list inside_access_out extended permit ip object FullAccess any

access-list inside_in extended permit tcp any any eq smtp

access-list inside_in extended permit tcp any any eq pop3

access-list inside_in extended deny ip object DenyAccess any

access-list inside_in extended deny tcp object DenyAccess any eq www

access-list inside_in extended permit tcp any any eq www

pager lines 24

logging enable

logging asdm informational

mtu outside 1500

mtu inside 1500

mtu management 1500

icmp unreachable rate-limit 1 burst-size 1

asdm image disk0:/asdm-631.bin

asdm history enable

arp timeout

object network obj-any

nat (inside,outside) dynamic interface

object network ftpserver

nat (inside,outside) static interface service tcp ftp ftp

object network remote_desktop

nat (inside,outside) static interface service tcp 3389 3389

object network remote_vnc

nat (inside,outside) static interface service tcp 5900 5900

object network FullAccess

nat (inside,outside) dynamic interface

object network DenyAccess

nat (inside,outside) dynamic interface

access-group outside_access_in in interface outside

route outside 0.0.0.0 0.0.0.0 10.0.0.1 1

route inside 192.168.88.160 255.255.255.224 172.16.17.1 1

route inside 192.168.100.0 255.255.255.0 172.16.17.1 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 sip-provisional-media 0:02:00 uauth 0:05:00 absolute

timeout tcp-proxy-reassembly 0:01:00

dynamic-access-policy-record DfltAccessPolicy

aaa authentication ssh console LOCAL

http server enable

http 192.168.1.0 255.255.255.0 management

http authentication-certificate inside

http authentication-certificate management

no snmp-server location

no snmp-server contact

snmp-server enable traps snmp authentication linkup linkdown coldstart

crypto ipsec security-association lifetime seconds 28800

crypto ipsec security-association lifetime kilobytes 4608000

telnet timeout 5

ssh 192.168.100.0 255.255.255.0 inside

ssh timeout 5

console timeout 0

threat-detection basic-threat

threat-detection statistics host

threat-detection statistics port

threat-detection statistics protocol

threat-detection statistics access-list

no threat-detection statistics tcp-intercept

webvpn

username admin password ******************* encrypted privilege 15

class-map type regex match-any URL

match regex url1

match regex url2

class-map type inspect http match-all class3

match request header host regex class URL

class-map inspection_default

match default-inspection-traffic

class-map classhttp

match access-list inside_in

policy-map type inspect dns preset_dns_map

parameters

message-length maximum client auto

message-length maximum 512

policy-map global_policy

class inspection_default

inspect dns preset_dns_map

inspect ftp

inspect h323 h225

inspect h323 ras

inspect rsh

inspect rtsp

inspect esmtp

inspect sqlnet

inspect skinny

inspect sunrpc

inspect xdmcp

inspect sip

inspect netbios

inspect tftp

inspect ip-options

class classhttp

policy-map type inspect http po-http

parameters

class class3

drop-connection log

service-policy global_policy global

prompt hostname context

call-home

profile CiscoTAC-1

no active

destination address http https://tools.cisco.com/its/service/oddce/services/DD

CEService

destination address email callhome@cisco.com

destination transport-method http

subscribe-to-alert-group diagnostic

subscribe-to-alert-group environment

subscribe-to-alert-group inventory periodic monthly

subscribe-to-alert-group configuration periodic monthly

subscribe-to-alert-group telemetry periodic daily

Cryptochecksum:9840729fa36cada0607c53d61352fa25

: end

ASA5510#

Help config ASA5510

jerrybu01 — Mon, 18 Mar 2013 01:52:49 GMT

I want to config like my request but i can't. Who can help me?

I configured but it doesn't work

ASA5510(config)# object network FullAccess

ASA5510(config-network-object)# range 192.168.172.1 192.168.172.25

ASA5510(config-network-object)# nat (inside,outside) dynamic interface

ASA5510(config-network-object)# access-list inside_access_out permit ip object FullAccess any

ASA5510(config)# object network DenyAccess

ASA5510(config-network-object)# range 192.168.172.26 192.168.172.254

ASA5510(config-network-object)# nat (inside,outside) dynamic interface

ASA5510(config-network-object)# access-list inside_in permit tcp any any eq 25

ASA5510(config)# access-list inside_in permit tcp any any eq 110

ASA5510(config)# access-list inside_in deny ip object DenyAccess any

ASA5510(config)# regex url1 "vn\.net"

ASA5510(config)# regex url2 "cisco\.com"

ASA5510(config)# class-map type regex match-any URL

ASA5510(config-cmap)# match regex url1

ASA5510(config-cmap)# match regex url2

ASA5510(config)# class-map type inspect http match-all class3

ASA5510(config-cmap)# match request header host regex class URL

ASA5510(config-cmap)# access-list inside_in extended deny tcp object DenyAcces any

ASA5510(config)# access-list inside_in extended permit tcp any any eq 80

ASA5510(config)# class-map classhttp

ASA5510(config-cmap)# match access-list inside_in

ASA5510(config-cmap)# policy-map type inspect http po-http

ASA5510(config-pmap)# parameters

ASA5510(config-pmap-p)# class class3

ASA5510(config-pmap-c)# drop-connection log

ASA5510(config-pmap-c)# policy-map global_policy

ASA5510(config-pmap)# class classhttp

ASA5510(config-pmap-c)# service-policy global_policy global

WARNING: Policy map global_policy is already configured as a service policy

ASA5510(config)#

Help config ASA5510

jerrybu01 — Mon, 18 Mar 2013 03:08:38 GMT

I configred as Julomban but it doesn't work when i completed configuration and i check. It means it still access internet with any ip address

Help config ASA5510

jocamare — Mon, 18 Mar 2013 18:52:14 GMT

Make it look like this:

object network Full-internet-Access

range 192.168.172.1 192.168.172.25

nat (inside,outside) dynamic interface

object network Deny-internet-Access

range 192.168.172.26 192.168.172.254

nat (inside,outside) dynamic interface

access-list inside_in permit tcp any any eq 25

access-list inside_in permit tcp any any eq 110

access-list inside_in permit tcp any any eq 80

access-list Inside_in permit ip object Full-internet-Access any

access-list Inside_in deny ip object Deny-internet-Access any [optional]

access-group inside_in in interface inside

regex url1 "vnexpress\.net"

regex url2 "tuoitre\.net"

regex url3 “vdict\.com”

regex url4 “translate\.google\.com\.vn”

class-map type inspect http match-any block-url-class

match request header host regex url1

match request header host regex url2

match request header host regex url3

match request header host regex url4

policy-map type inspect http block-url-policy

parameters

class block-url-class

drop-connection log

policy-map global_policy

class inspection_default

inspect http block-url-policy

Note: this doesn't work for HTTPS traffic.

Help config ASA5510

jerrybu01 — Tue, 19 Mar 2013 01:58:33 GMT

First, Thank you jocamare!

So If i want to configure for HTTPS traffic, what can i do?

Help config ASA5510

jocamare — Tue, 19 Mar 2013 02:01:14 GMT

Check this thread:

https://supportforums.cisco.com/thread/2202626

Help config ASA5510

jerrybu01 — Tue, 19 Mar 2013 04:55:45 GMT

Hi jocamare,

I configured like above but the asa blocked all traffic ip address 192.168.172.0/24

my request:

range 1: 192.168.172.1 to 192.168.172.25 allow full internet

range 2: 192.168.172.26 to 192.168.172.254 deny internet but allow some webpages, email, https

Help config ASA5510

jocamare — Tue, 19 Mar 2013 04:58:59 GMT

Provide the config.

The requests should be fulfilled now.

The only "tricky" part will be to configure regex.

Help config ASA5510

jerrybu01 — Wed, 20 Mar 2013 10:01:26 GMT

I configured the asa like:

ASA5510# show run

: Saved

ASA Version 8.3(1)

hostname ASA5510

domain-name lhoi.local

enable password ************************* encrypted

passwd ***************** encrypted

names

interface Ethernet0/0

description Connect_to_Modem

nameif outside

security-level 0

ip address 10.0.0.2 255.255.255.0

interface Ethernet0/1

description Connect_to_Router

nameif inside

security-level 100

ip address 172.16.17.2 255.255.255.240

interface Ethernet0/2

shutdown

no nameif

no security-level

no ip address

interface Ether

shutdown

no nameif

no security-level

no ip address

interface Management0/0

description Management

nameif management

security-level 100

ip address 192.168.1.1 255.255.255.0

ftp mode passive

clock timezone ICT 7

dns server-group DefaultDNS

domain-name lohoi.local

object network obj-any

subnet 0.0.0.0 0.0.0.0

object network ftpserver

host 192.168.172.90

description FTP server

object network remote_desktop

host 192.168.172.4

object network remote_vnc

host 192.168.172.2

access-list 101 extended permit icmp

access-list 101 extended permit icmp any any echo-reply

access-list 101 extended permit tcp any any

access-list outside_access_in extended permit tcp any object ftpserver eq ftp

access-list outside_access_in extended permit tcp any host 192.168.172.4 eq 3389

access-list outside_access_in extended permit tcp any host 192.168.172.2 eq 5900

pager lines 24

logging enable

logging asdm informational

mtu outside 1500

mtu inside 1500

mtu management 1500

icmp unreachable rate-limit 1 burst-size 1

asdm image disk0:/asdm-6

asdm history enable

arp timeout 14400

object network obj-any

nat (inside,outside) dynamic interface

object network ftpserver

nat (inside,outside) static interface service tcp ftp ftp

object network remote_desktop

nat (inside,outside) static interface service tcp 3389 3389

object network remote_vnc

nat (inside,outside) static interface service tcp 5900 5900

access-group outside_access_in in interface outside

route outside 0.0.0.0 0.0.0.0 10.0.0.1 1

route inside 192.168.172.0 255.255.255.0 172.16.17.1 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 sip-provisional-media 0:02:00 uauth 0:05:00 absolute

timeout tcp-proxy-reassembly 0:01:00

dynamic-access-policy-record DfltAccessPolicy

aaa authentication ssh console LOCAL

http server enable

http 192.168.1.0 255.255.255.0 management

http authentication-certificate inside

http authentication-certificate management

no snmp-server location

no snmp-server contact

snmp-server enable traps snmp authentication linkup linkdown coldstart

crypto ipsec security-association lifetime seconds 28800

crypto ipsec security-association lifetime kilobytes 4608000

telnet timeout 5

ssh 192.168.100.0 255.255.255.0 inside

ssh timeout 5

console timeout 0

threat-detection basic-threat

threat-detection statistics host

threat-detection statistics port

threat-detection statistics protocol

threat-detection statistics access-list

no threat-detection statistics tcp-intercept

webvpn

username admin password ******************** encrypted privilege 15

class-map inspection_default

match default-inspection-traffic

policy-map type inspect dns preset_dns_map

parameters

message-length maximum client auto

message-length maximum 512

policy-map global_policy

class inspection_default

inspect dns preset_dns_map

inspect ftp

inspect h3

inspect h323 ras

inspect rsh

inspect rtsp

inspect esmtp

inspect sqlnet

inspect skinny

inspect sunrpc

inspect xdmcp

inspect sip

inspect netbios

inspect tftp

inspect ip-options

service-policy global_policy global

prompt hostname context

call-home

profile CiscoTAC-1

no active

destination address http https://tools.cisco.com/its/service/oddce/services/DD

CEService

destination address email callhome@cisco.com

destination transport-method http

subscribe-to-alert-group diagnostic

subscribe-to-alert-group environment

subscribe-to-alert-group inventory periodic monthly

subscribe-to-alert-group configuration periodic monthly

subscribe-to-alert-group telemetry periodic daily

Cryptochecksum:d7c6f9217fa2d00bd82c3d3db72bd691

: end

ASA5510#

After that i configured more allow the request:

object network FullAccess

range 192.168.172.1 192.168.172.25

nat (inside,outside) dynamic interface

object network DenyAccess

range 192.168.172.26 192.168.172.254

nat (inside,outside) dynamic interface

access-list inside_in permit tcp any any eq 25

access-list inside_in permit tcp any any eq 110

access-list inside_in permit tcp any any eq 80

access-list Inside_in permit ip object FullAccess any

access-list Inside_in deny ip object DenyAccess any

access-group inside_in in interface inside

regex url1 “vdict\.com”

regex url2 “translate\.google\.com\.vn”

regex url3 "lienhoagroup\.com"

regex url4 "forevergreenresort\.com"

class-map type inspect http match-any block-url-class

match request header host regex url1

match request header host regex url2

match request header host regex url3

match request header host regex url4

policy-map type inspect http block-url-policy

parameters

class block-url-class

drop-connection log

policy-map global_policy

class inspection_default

inspect http block-url-policy

--> After i configured completely, all my traffic blocked to access internet, i think it wrongs a few points? i don't know how to complete? help me!

Re: Help config ASA5510

jocamare — Wed, 20 Mar 2013 19:04:20 GMT

Make sure to allow DNS traffic out in the Access-list.

access-list inside_in permit tcp any any eq 25

access-list inside_in permit tcp any any eq 110

access-list inside_in permit tcp any any eq 80

access-list inside_in permit tcp any any eq 53

access-list inside_in permit udp any any eq 53

access-list Inside_in permit ip object FullAccess any

access-list Inside_in deny ip object DenyAccess any

Help config ASA5510

jerrybu01 — Tue, 26 Mar 2013 07:04:38 GMT

the internet allows all traffic when i configured as above.

I think:

Use the access-list traffic classification in this context is not the idea that policy setting. Should you permit that I want affected traffic classification (ie banned some sites). ? or ASA 5510 you can't configured like that?

Help config ASA5510

jocamare — Tue, 26 Mar 2013 13:16:28 GMT

Final tweak, make it look like this:

regex url1 “\vdict\.com”

regex url2 “\translate\.google\.com\.vn”

regex url3 "\lienhoagroup\.com"

regex url4 "\forevergreenresort\.com"

Just modify this, leave the rest as it is.

Help config ASA5510

jerrybu01 — Wed, 27 Mar 2013 04:21:51 GMT

I can't solve my problem, i think we can configure to use web filtering.

But if to block the page, you have to know its ip (wan ip),it is very difficult when the page have a lot of ip public.

I want to block domain name?can i configure it? i am using asdm 6.3 for ASA