Incoming TCP faddr traffic
Ciscso Forum Question:
After reviewing alerts SNORT on a Win2KServer, I found a faddr TCP traffic.
Log Message % PIX-6-302001: Built number of incoming TCP connection for faddr gaddr laddr x.x.x.x/80 adr_ip/port x.x.x.x3537
Journal message% PIX-6-302002: connection TCP disassembly for x.x.x.x/3537 adr_ip/port x.x.x.x/80 duration time laddr gaddr faddr byte num (text)
The same faddr was denied to all other laddr, except this one. Why is it spend?
Well SE firewall prevents traffic from addresses abroad to break into the network if you have configured NAT or not. We usually use NAT to hide inside addresses, and also to support a multitude of users against a handful of public IP addresses.
Sometimes it is necessary to leave the traffic to bypass the normal rules of the firewall to allow external users to access protected resources, for example a Web server in the DMZ. The usual design is to put these resources that require outside access to a different interface to servers and internal users. This third interface is usually referred to as the DMZ. You can have multiple DMZ according to your requirement.
When you configure a static and then a corresponding conduct in leaving the traffic for this machine, you're essentially saying the firewall to allow connections initiated from outside of this machine and corresponding to the driving. When this happens, the PIX it will report in the newspapers and that's exactly what you see. For machines either have no static type or even if they are not static but no ductwork is allowing anything to them, these machines connections will be rejected.
Hope that makes things clear.
Tags: Cisco Security
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In my windows7 when I migrated to the task force to the area, crashed by the firewall. And also it does not show in the services. In the firewall rules of incoming and outgoing traffic is missing.
Hello arjunpottekkad,
It is disheartening to know that have problems you with the firewall. As I understand it the incoming and outgoing traffic rules are missing from the firewall.
The question you posted would be better suited in the TechNet Forums . I would recommend posting your query in the TechNet Forums. You can follow the link to your question:
Answer to us if you are having problems with the Windows Firewall or any other problem of Windows, and I'd be happy to help you again and try to correct the problem as soon as possible.
Good day!
Hope this information helps.
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Windows Server 2008 R2 rejects all incoming TCP connections
I am unable to connect via http, for example to a brand new installation of 64-bit Windows Server 2008. The server is in a domain, but is not a domain controller (which is another problem altogether).
A specific example, IIS7 is running on the server and the site is accessible locally via http://localhost, but when I try to connect from another machine on the same subnet, the connection is denied, even if the Windows Firewall is disabled in all profiles.
I am able to connect to and browse shared folders on the server by using Windows Explorer, it is not a user account or physical connection problem. I can ping other machines on the network from the server, but trying to ping the server causes another machine "Destination host unreachable".
I have determined that the server refuses simply connections TCP from any other machine. I think, there must be some other configuration setting I'm missing...
In the network and sharing Center, I see that my connection type is 'Internet', which can very well what is the problem, but I have no way to change that.
Help, please!
Hello
You can find the Server forums on TechNet support, please create a new post at the following link:
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-
pix basic problem the incoming and outgoing traffic.
I have a problem with the ping command. I can ping to workstations on the network 192.168.100.x but I can not ping to the output interface (e0) on the same network.
The second problem is that I can ping from outside to inside, ive set the ACLs and static route but did not work.
I just want to pc1 to be able to get through pix for pc 2 and vice versa. Please give me an example of configuration.
Here is the config:
6.3 (4) version PIX
interface ethernet0 car
Auto interface ethernet1
Automatic stop of interface ethernet2
ethernet0 nameif outside security0
nameif ethernet1 inside the security100
nameif ethernet2 intf2 interieure4
activate the password xxx
passwd xxx
pixfirewall hostname
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
fixup protocol smtp 25
fixup protocol sqlnet 1521
fixup protocol tftp 69
names of
access-list acl_out permit icmp any one
pager lines 24
Outside 1500 MTU
Within 1500 MTU
intf2 MTU 1500
outdoor IP 192.168.100.1 address 255.255.255.0
IP address inside 192.168.1.1 255.255.255.0
No intf2 ip address
alarm action IP verification of information
alarm action attack IP audit
history of PDM activate
ARP timeout 14400
Global (outside) 1 192.168.100.150 - 192.168.100.200 netmask 255.255.255.0
NAT (inside) 1 0.0.0.0 0.0.0.0 0 0
Access-group acl_out in interface outside
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
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
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 0
Terminal width 80
Cryptochecksum:xxx
: end
Hello!
If you are not able to ping to interface external of the pix from the inside of the host, but able to ping to the host outside the internal host. It is very good. As it is the safety device designed in pix, ASA. You cannot ping the ip address of the pix of the host connected to the other interface.
Regarding the other question, please try the following command:
Global 1 interface (outside)
static (inside, outside)
WR mem
CL xlate
Where is the free public ip address in the pool which can be used to map the pc1 inside.
Another configuraiton seems perfect. If you have any questions, feel free to contact me.
Thank you best regards &,.
Harish Tandon
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I searched in the new TCP State ASA 8.2.1 bypass feature and I have a few questions that I can't find information about in the docs:
1 Bypass State TCP removes all stateful inspection? That is to say that I must allow traffic from response in the ACL
access-list on permit tcp any any eq www
access-list on permit tcp any eq www everything
access-list on permit udp any any eq field
access-list on permit udp any eq field all
2. the State of docs who are unaware of the TCP State can be enabled for some connections. Is request inspection disabled for all connections, or just for specific connections have been implemented for the avoidance of State TCP?
It removes all the statefull inspection. By default, all traffic that passes through the Adaptive security device is inspected using the Adaptive Security algorithm and either allowed to pass or a fall is based on the security policy. The Adaptive security device optimizes the performance of firewall to check the status of each package (what is a new connection or a connection?) and assigning the path of session management (a new connection SYN packet), the fast path (an established connection), or the path of control plan (Advanced inspection).
Inspection of the application is not supported in bypass State TCP as enforcement requires the incoming and outgoing traffic to pass through the same Adaptive security appliance, so control of the application is not supported with by-pass TCP State.
-
Incoming direction on the Pix interfaces
Access-group of statements always apply an ACL to an interface with the command "in the
interface. The Pix docs say "this filter incoming packets to the given interface. I would like a clear definition of what's arrival. My understanding, according to the logic of the access lists that I have made a request, this incoming is-bound traffic in the interface of the Pix of the connected subnet. So for the following interfaces, traffic entering the following subnet provenance 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
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SonicWall VPN PIX - does not, could someone help?
Hi all
I'm trying to set up an a 506th PIX VPN tunnel (firmware 6.3 (2)), a firewall SonicWall Pro. It does not at the moment. Phase 1 is ok but the phase 2 is not, the VPN tunnel has not been established, and the security association is removed after a minute or two. I enclose below the PIX config and an attempt to create VPN tunnel debugging output (slightly modified and cut for reasons of confidentiality). The PIX already has other two VPN configured which work perfectly.
I would be very grateful to anyone who could help me answer the following questions about this VPN configuration:
1. to debug output, which means the next?
ISAKMP (0): retransmission of the phase 2 (0/0)... mess_id 0xafc08a94
crypto_isakmp_process_block:src:remotevpnpeer, dest:vpnpix1 - dpt:500 e0 spt:500
ISAKMP: error msg not encrypted
2. in the config, I don't know if the 3 static controls are necessary and how it might interact... What do you think?
3. in what order things happen in the PIX when traffic is from the local network to remote network by VPN? What is NAT then treatment then setting up VPN to access list? or or treatment, then NAT and VPN to access list? or another possibility?
4. How can I get it work?
Thank you very much in advance for any help provided,
A.G.
########### NAMING #################################
vpnpix1 - is the local cisco PIX
remotevpnpeer - is the Sonicwall firewall remote
Intranet - is the local network behind PIX
remotevpnLAN - is the remote network behind the SonicWall
################ CONFIG #############################
6.3 (2) version PIX
interface ethernet0 10full
interface ethernet1 10full
ethernet0 nameif outside security0
nameif ethernet1 inside the security100
.../...
hostname vpnpix1
.../...
names of
name A.B.C.D vpnpix1-e1
name X.Y.Z.T vpnpix1-e0
name E.F.G.H defaultgw
intranet name 10.0.0.0
name 192.168.250.0 nat-intranet
name J.K.L.M internetgw
name 10.M.N.P server1
name Server2 10.M.N.Q
name 10.M.N.R server3
name 192.168.252.0 remotevpnLAN
name 10.1.71.0 nat-remotevpnLAN
.../...
object-group network server-group
description servers used by conencted to users remote LAN through a VPN tunnel
network-host server1 object
host Server2 network-object
network-host server3 object
.../...
access allowed INCOMING tcp nat-remotevpnLAN 255.255.255.0 list object-group server-eq - ica citrix
.../...
OUTBOUND ip intranet 255.0.0.0 allowed access list nat-remotevpnLAN 255.255.255.0
access list permits INTRANET-to-remotevpnLAN-VPN ip intranet 255.0.0.0 255.255.255.0 remotevpnLAN
access-list SHEEP, remotevpnLAN permits intranet ip 255.0.0.0 255.255.255.0 nat-remotevpnLAN
.../...
IP address outside the vpnpix1-e0 255.255.255.240
IP address inside the vpnpix1-e1 255.255.252.0
.../...
Global 192.168.250.1 1 (outside)
NAT (inside) 0 access-list SHEEP-to-remotevpnLAN
NAT (inside) 1 intranet 255.0.0.0 0 0
.../...
static (inside, outside) server1 server1 netmask 255.255.255.255 0 0
public static server2 (indoor, outdoor) server2 netmask 255.255.255.255 0 0
public static server3 (indoor, outdoor) server3 netmask 255.255.255.255 0 0
static (exterior, Interior) nat-remotevpnLAN remotevpnLAN netmask 255.255.255.0 0 0
.../...
Access-group ENTERING into the interface outside
Access-group OUTGOING in the interface inside
Route outside 0.0.0.0 0.0.0.0 internetgw 1
Route inside the intranet 255.0.0.0 defaultgw 1
.../...
Permitted connection ipsec sysopt
.../...
Crypto ipsec transform-set esp-3des esp-md5-hmac VPN - TS1
.../...
map BusinessPartners 30 ipsec-isakmp crypto
card crypto BusinessPartners 30 matches the INTRANET-to-remotevpnLAN-VPN address
card crypto BusinessPartners 30 set peer remotevpnpeer
card crypto BusinessPartners 30 game of transformation-VPN-TS1
BusinessPartners outside crypto map interface
ISAKMP allows outside
.../...
ISAKMP key * address remotevpnpeer netmask 255.255.255.255
ISAKMP identity address
part of pre authentication ISAKMP policy 10
ISAKMP policy 10 3des encryption
ISAKMP policy 10 md5 hash
10 2 ISAKMP policy group
ISAKMP life duration strategy 10 28800
part of pre authentication ISAKMP policy 20
ISAKMP policy 20 3des encryption
ISAKMP policy 20 chopping sha
20 2 ISAKMP policy group
ISAKMP duration strategy of life 20 28800
part of pre authentication ISAKMP policy 30
ISAKMP policy 30 3des encryption
ISAKMP policy 30 md5 hash
30 1 ISAKMP policy group
ISAKMP duration strategy of life 30 28800
.../...
: end
################## DEBUG ############################
vpnpix1 # debug crypto isakmp
vpnpix1 #.
ISAKMP (0): early changes of Main Mode
crypto_isakmp_process_block:src:remotevpnpeer, dest:vpnpix1 - dpt:500 e0 spt:500
Exchange OAK_MM
ISAKMP (0): treatment ITS payload. Message ID = 0
ISAKMP (0): audit ISAKMP transform 1 against the policy of priority 10
ISAKMP: 3DES-CBC encryption
ISAKMP: MD5 hash
ISAKMP: default group 2
ISAKMP: preshared auth
ISAKMP: type of life in seconds
ISAKMP: duration of life (basic) of 28800
ISAKMP (0): atts are acceptable. Next payload is 0
ISAKMP (0): ITS been pre-shared key, using id ID_IPV4_ADDR type authentication
to return to the State is IKMP_NO_ERROR
crypto_isakmp_process_block:src:remotevpnpeer, dest:vpnpix1 - dpt:500 e0 spt:500
Exchange OAK_MM
ISAKMP (0): processing KE payload. Message ID = 0
ISAKMP (0): processing NONCE payload. Message ID = 0
ISAKMP (0): load useful treatment vendor id
ISAKMP (0): ID payload
next payload: 8
type: 1
Protocol: 17
Port: 500
Length: 8
ISAKMP (0): the total payload length: 12
to return to the State is IKMP_NO_ERROR
crypto_isakmp_process_block:src:remotevpnpeer, dest:vpnpix1 - dpt:500 e0 spt:500
Exchange OAK_MM
ISAKMP (0): processing ID payload. Message ID = 0
ISAKMP (0): HASH payload processing. Message ID = 0
ISAKMP (0): SA has been authenticated.
ISAKMP (0): start Quick Mode Exchange, M - ID - 1346336108:afc08a94
to return to the State is IKMP_NO_ERROR
ISAKMP (0): send to notify INITIAL_CONTACT
ISAKMP (0): sending message 24578 NOTIFY 1 protocol
Peer VPN: ISAKMP: approved new addition: ip:remotevpnpeer / 500 Total VPN peer: 3
Peer VPN: ISAKMP: Peer ip:remotevpnpeer / 500 Ref cnt incremented: 1 Total VPN peer: 3
crypto_isakmp_process_block:src:remotevpnpeer, dest:vpnpix1 - dpt:500 e0 spt:500
ISAKMP (0): processing NOTIFY payload Protocol 14 1
SPI 0, message ID = 476084314
to return to the State is IKMP_NO_ERR_NO_TRANS
ISAKMP (0): retransmission of the phase 2 (0/0)... mess_id 0xafc08a94
crypto_isakmp_process_block:src:remotevpnpeer, dest:vpnpix1 - dpt:500 e0 spt:500
ISAKMP: error msg not encrypted
ISAKMP (0): start Quick Mode Exchange, M - ID 1919346690:7266e802
crypto_isakmp_process_block:src:remotevpnpeer, dest:vpnpix1 - dpt:500 e0 spt:500
ISAKMP: error msg not encrypted
ISAKMP (0): retransmission of the phase 2 (1: 1)... mess_id 0xafc08a94
crypto_isakmp_process_block:src:remotevpnpeer, dest:vpnpix1 - dpt:500 e0 spt:500
ISAKMP: error msg not encrypted
ISAKMP (0): retransmission of the phase 2 (0/2)... mess_id 0x7266e802
crypto_isakmp_process_block:src:remotevpnpeer, dest:vpnpix1 - dpt:500 e0 spt:500
ISAKMP: error msg not encrypted
ISAKMP (0): retransmission of the phase 2 (2/3)... mess_id 0xafc08a94
crypto_isakmp_process_block:src:remotevpnpeer, dest:vpnpix1 - dpt:500 e0 spt:500
ISAKMP: error msg not encrypted
ISAKMP (0): retransmission of the phase 2 (1/4)... mess_id 0x7266e802
crypto_isakmp_process_block:src:remotevpnpeer, dest:vpnpix1 - dpt:500 e0 spt:500
ISAKMP: error msg not encrypted
ISAKMP (0): start Quick Mode Exchange, M - ID - 1475513565:a80d7323
ISAKMP (0): delete SA: CBC vpnpix1-e0, dst remotevpnpeer
crypto_isakmp_process_block:src:remotevpnpeer, dest:vpnpix1 - dpt:500 e0 spt:500
ISAKMP: drop msg deleted his
ISADB: Reaper checking HIS 0x10ff1ac, id_conn = 0 DELETE IT!
Peer VPN: ISAKMP: Peer ip:remotevpnpeer / 500 Ref cnt decremented for: 0 Total of VPN peer: 3
Peer VPN: ISAKMP: deleted peer: ip:remotevpnpeer / 500 Total VPN peers: 2
ISADB: Reaper checking HIS 0 x 1100984, id_conn = 0
ISADB: Reaper checking HIS 0x10fcddc, id_conn = 0
crypto_isakmp_process_block:src:remotevpnpeer, dest:vpnpix1 - dpt:500 e0 spt:500
ISAKMP: its not located for ike msg
#####################################################
Get rid of:
static (exterior, Interior) nat-remotevpnLAN remotevpnLAN netmask 255.255.255.0 0 0
You don't need it. Change:
OUTBOUND ip intranet 255.0.0.0 allowed access list nat-remotevpnLAN 255.255.255.0
access-list SHEEP, remotevpnLAN permits intranet ip 255.0.0.0 255.255.255.0 nat-remotevpnLAN
TO:
access list permits OUTGOING ip intranet 255.0.0.0 255.255.255.0 remotevpnLAN
access-list SHEEP, remotevpnLAN permits intranet ip 255.0.0.0 255.255.255.0 remotevpnLAN
This indicates the PIX not NAT IPSec traffic. NAT happens BEFORE IPSec in the PIX, so if you the traffic IPSec nat it will never match your crypto access list and will not be encrypted.
This, however, should not stop the tunnel of Phase 2 of the course of construction, they would stop flowing above the tunnel, traffic, so you still have a problem somewhere. What I'm guessing, is that the Sonicwall (SW) has a different encryption-defined list access, it must be the EXACT OPPOSITE of what is configured on the PIX. In other words, the SW should be encrypting the traffic of "remotevpnLAN-24" "intranet/8", make sure that the subnet mask ar ETHE same too. "
To answer your questions:
1. it simply means that the PIX has not received a response and is to retransmit the last ISAKMP packet. The process_block simply means that the PIX has dropped a package that was to be encrypted because the IPSec tunnel has not been built. If you get the tunnel built, these messages will disappear.
2. the 3 first static does not appear to be linked to the tunnel IPSec, if they are simply to access a server inside, then they will not affect this VPN tunnel. The last of them should be deleted, as I already said.
3. for traffic initiated from inside the PIX, the order is incoming ACL, then NAT, IPSec processing. That's why your OUTGOING ACL must allow traffic first, then your NAT 0 statement refuses to be NAT had, then the encryption function is the traffic and the number.
4 do what I said above :-)
If you still have no luck, re - run debugs, but initiate traffic behind the Sonicwall, in this way the Sonicwall will try and debug of build that the tunnel and you will get more information on the PIX. Mainly, we'll see what traffic model the SonicWall is configured to encrypt (you don't see if the PIX initiates the tunnel).
-
Hello
The ASA is not my strong point. I had to make some changes to my ASA clients when the provider has changed. The ASA has been NAT would be an NTU gave us the previous provider, the new provider of the SAA is NAT had a modem. The only thing that does not work right is the VPN.
When IPSec VPN connects we cannot ping, telnet/ssh or RDP to one of imagine. My guess is that the ACL are not quite right. Could someone take a look at the config and propose something?
WAN - ASA - LAN (192.168.20.x)
I deleted the names of user and password and changed the public IP address around security.
ASA # sh run
: Saved
:
ASA Version 8.2 (5)
!
host name asa
domain afpo.local
activate the encrypted password of JCdTyvBk.ia9GKSj
d/TIM/v60pVIbiEg encrypted passwd
names of
!
interface Ethernet0/0
switchport access vlan 2
!
interface Ethernet0/1
!
interface Ethernet0/2
!
interface Ethernet0/3
!
interface Ethernet0/4
!
interface Ethernet0/5
!
interface Ethernet0/6
!
interface Ethernet0/7
!
interface Vlan1
nameif inside
security-level 100
address 192.168.20.1 255.255.255.0
!
interface Vlan2
nameif outside
security-level 0
PPPoE client vpdn group idnet
IP address pppoe setroute
!
banner exec *****************************************************
exec banner * SCP backup enabled *.
exec banner * SYSLOG enabled *.
banner exec *****************************************************
passive FTP mode
clock timezone GMT/UTC 0
summer time clock GMT/BDT recurring last Sun Mar 01:00 last Sun Oct 02:00
DNS lookup field inside
DNS server-group DefaultDNS
Server name 192.168.20.201
domain afpo.local
permit same-security-traffic intra-interface
object-group network GFI-SERVERS
object-network 5.11.77.0 255.255.255.0
object-network 93.57.176.0 255.255.255.0
object-network 94.186.192.0 255.255.255.0
object-network 184.36.144.0 255.255.255.0
network-object 192.67.16.0 255.255.252.0
object-network 208.43.37.0 255.255.255.0
network-object 228.70.81.0 255.255.252.0
network-object 98.98.51.176 255.255.255.240
allowed extended INCOMING tcp access list any interface outside eq https inactive
allowed extended INCOMING tcp access list any interface outside eq 987
interface of access inactive list allowed extended object-group GFI SERVERS off eq smtp tcp INBOUND
interface to access extended permitted list INCOMING tcp object-group GFI SERVERS off eq ldaps
access-list SHEEP extended ip 192.168.20.0 allow 255.255.255.0 10.0.0.0 255.255.0.0
access-list SHEEP extended ip 192.168.20.0 allow 255.255.255.0 172.16.0.0 255.255.255.0
access-list SHEEP extended ip 192.168.20.0 allow 255.255.255.0 172.16.0.0 255.255.255.128
IP 10.71.79.0 allow Access - list extended RITM 255.255.255.0 10.0.0.0 255.255.0.0
CLIENT_VPN list of allowed ip extended access any 172.16.0.0 255.255.255.128
Standard access list SPLIT_TUNNEL allow 10.71.79.0 255.255.255.0
Standard access list TSadmin_splitTunnelAcl allow 10.71.79.0 255.255.255.0
pager lines 24
Enable logging
logging trap information
asdm of logging of information
host of logging inside the 10.71.79.2
Within 1500 MTU
Outside 1500 MTU
local pool CLIENT_VPN_POOL 172.16.0.1 - 172.16.0.126 255.255.255.128 IP mask
local pool SSL_VPN_POOL 172.16.0.129 - 172.16.0.254 255.255.255.128 IP mask
IP verify reverse path to the outside interface
IP audit attack alarm drop action
ICMP unreachable rate-limit 1 burst-size 1
ICMP allow 10.71.79.0 255.255.255.0 echo inside
ICMP allow any inside
ICMP allow any inaccessible outside
ICMP allow 86.84.144.144 255.255.255.240 echo outside
ICMP allow all outside
ASDM image disk0: / asdm - 645.bin
enable ASDM history
ARP timeout 14400
NAT-control
Global 1 interface (outside)
NAT (inside) 0 access-list SHEEP
NAT (inside) 1 192.168.20.0 255.255.255.0
public static tcp (indoor, outdoor) interface smtp 10.71.79.2 smtp netmask 255.255.255.255
public static tcp (indoor, outdoor) interface https 10.71.79.2 https netmask 255.255.255.255
public static tcp (indoor, outdoor) interface 987 10.71.79.2 987 netmask 255.255.255.255
public static tcp (indoor, outdoor) interface ldaps 10.71.79.2 ldaps netmask 255.255.255.255
Access-group ENTERING into the interface outside
Timeout xlate 03:00
Timeout conn 01:00 half-closed 0:10:00 udp 0:02:00 icmp 0:00:02
Sunrpc timeout 0:10:00 h323 0:05:00 h225 mgcp from 01:00 0:05:00 mgcp-pat 0:05:00
Sip timeout 0:30:00 sip_media 0:02:00 prompt Protocol sip-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
Floating conn timeout 0:00:00
dynamic-access-policy-registration DfltAccessPolicy
RADIUS protocol AAA-server Serveur_RADIUS
AAA-server host 10.71.79.2 Serveur_RADIUS (inside)
key *.
RADIUS-common-pw *.
not compatible mschapv2
the ssh LOCAL console AAA authentication
Enable http server
Server of http session-timeout 60
http 0.0.0.0 0.0.0.0 inside
http 87.84.164.144 255.255.255.240 outside
No snmp server location
No snmp Server contact
Server enable SNMP traps snmp authentication linkup, linkdown cold start
resetinbound of service inside interface
resetinbound of the outside service interface
Service resetoutside
Crypto ipsec transform-set ESP-AES-256-MD5 esp-aes-256 esp-md5-hmac
Crypto ipsec transform-set ESP-DES-SHA esp - esp-sha-hmac
Crypto ipsec transform-set ESP-DES-MD5 esp - esp-md5-hmac
Crypto ipsec transform-set ESP-AES-192-MD5 esp-aes-192 esp-md5-hmac
Crypto ipsec transform-set ESP-3DES-MD5-esp-3des esp-md5-hmac
Crypto ipsec transform-set ESP-AES-256-SHA 256 - aes - esp esp-sha-hmac
Crypto ipsec transform-set ESP-AES-128-SHA aes - esp esp-sha-hmac
Crypto ipsec transform-set ESP-AES-192-SHA esp-aes-192 esp-sha-hmac
Crypto ipsec transform-set ESP-AES-128-MD5-esp - aes esp-md5-hmac
Crypto ipsec transform-set esp-SHA-ESP-3DES-3des esp-sha-hmac
life crypto ipsec security association seconds 28800
Crypto ipsec kilobytes of life - safety 4608000 association
address DYN_CLIENT_VPN 10 of the crypto dynamic-map CLIENT_VPN
Crypto dynamic-map DYN_CLIENT_VPN 10 the value transform-set ESP-AES-256-SHA ESP-3DES-MD5
crypto dynamic-map SYSTEM_DEFAULT_CRYPTO_MAP 65535 pfs Group1 set
Crypto dynamic-map SYSTEM_DEFAULT_CRYPTO_MAP 65535 value transform-set ESP-AES-128-SHA ESP-AES-128-MD5 ESP-AES-192-SHA ESP-AES-192-MD5 ESP-AES-256-SHA ESP-AES-256-MD5 ESP-3DES-SHA MD5-ESP-3DES ESP-DES-SHA ESP-DES-MD5
crypto IPSEC_VPN 10 card matches the address RITM
card crypto IPSEC_VPN 10 set peer 88.98.52.177
card crypto IPSEC_VPN 10 the value transform-set ESP-AES-256-SHA ESP-3DES-MD5
card crypto IPSEC_VPN 100-isakmp dynamic ipsec DYN_CLIENT_VPN
card crypto IPSEC_VPN 65535-isakmp dynamic ipsec SYSTEM_DEFAULT_CRYPTO_MAP
IPSEC_VPN interface card crypto outside
crypto ISAKMP allow outside
crypto ISAKMP policy 10
preshared authentication
aes-256 encryption
sha hash
Group 5
life 86400
crypto ISAKMP policy 20
preshared authentication
aes-192 encryption
sha hash
Group 5
life 86400
crypto ISAKMP policy 30
preshared authentication
aes encryption
sha hash
Group 5
life 86400
crypto ISAKMP policy 40
preshared authentication
3des encryption
sha hash
Group 2
life 86400
Telnet timeout 5
SSH enable ibou
SSH 0.0.0.0 0.0.0.0 inside
SSH 88.98.52.176 255.255.255.240 outside
SSH 175.171.144.58 255.255.255.255 outside
SSH 89.187.81.30 255.255.255.255 outside
SSH timeout 60
SSH version 2
Console timeout 30
management-access inside
VPDN group idnet request dialout pppoe
VPDN group idnet localname
VPDN group idnet ppp authentication chap
VPDN usernamepassword *. a basic threat threat detection
scanning-threat shun except ip 10.0.0.0 address threat detection 255.255.0.0
scanning-threat time shun 360 threat detection
threat detection statistics
a statistical threat detection tcp-interception rate-interval 30 burst-400-rate average rate 200
NTP server 130.88.202.49 prefer external source
TFTP server outside 86.84.174.157 /Aberdeen_Fishing_Producers_ (ASA5505) .config
WebVPN
port 4443
allow outside
DTLS port 4443
SVC disk0:/anyconnect-win-2.4.0202-k9.pkg 1 image
SVC disk0:/anyconnect-macosx-i386-2.4.0202-k9.pkg 2 image
Picture disk0:/anyconnect-macosx-powerpc-2.4.0202-k9.pkg 3 SVC
SVC profiles ANYCONNECT_PROFILE disk0: / AnyConnectProfile.xml
enable SVC
attributes of Group Policy DfltGrpPolicy
value of server WINS 10.71.79.2
value of server DNS 10.71.79.2
VPN - 10 concurrent connections
Protocol-tunnel-VPN IPSec svc
enable IP-comp
enable PFS
Split-tunnel-policy tunnelspecified
value of Split-tunnel-network-list SPLIT_TUNNEL
afpo.local value by default-field
WebVPN
time to generate a new key of SVC 60
SVC generate a new method ssl key
profiles of SVC value ANYCONNECT_PROFILE
SVC request no svc default
internal TSadmin group strategy
Group Policy attributes TSadmin
value of server WINS 10.71.79.2
value of server DNS 10.71.79.2
Protocol-tunnel-VPN IPSec
Split-tunnel-policy tunnelspecified
value of Split-tunnel-network-list TSadmin_splitTunnelAcl
afpo.local value by default-field
username password backup encrypted qwzcxbPwKZ7WiiEC privilege 15
backup attributes username
type of remote access service
admin Cg9KcOsN6Wl24jnz encrypted privilege 15 password username
attributes of user admin name
type of remote access service
tsadmin encrypted v./oXn.idbhaKhwk privilege 15 password username
R60CY/username password 7AzpFEsR ritm. O encrypted privilege 15
ritm username attributes
type of remote access service
attributes global-tunnel-group DefaultWEBVPNGroup
address SSL_VPN_POOL pool
authentication-server-group LOCAL Serveur_RADIUS
type tunnel-group RemoteVPN remote access
attributes global-tunnel-group RemoteVPN
address CLIENT_VPN_POOL pool
authentication-server-group LOCAL Serveur_RADIUS
IPSec-attributes tunnel-group RemoteVPN
pre-shared key *.
tunnel-group 87.91.52.177 type ipsec-l2l
IPSec-attributes tunnel-group 89.78.52.177
pre-shared key *.
tunnel-group TSadmin type remote access
tunnel-group TSadmin General attributes
address CLIENT_VPN_POOL pool
strategy-group-by default TSadmin
tunnel-group TSadmin ipsec-attributes
pre-shared key *.
!
class-map inspection_default
match default-inspection-traffic
!
!
type of policy-card inspect dns preset_dns_map
parameters
maximum message length automatic of customer
message-length maximum 512
Policy-map global_policy
class inspection_default
inspect the preset_dns_map dns
inspect the ftp
inspect h323 h225
inspect the h323 ras
inspect the rsh
inspect the rtsp
inspect sqlnet
inspect the skinny
inspect sunrpc
inspect xdmcp
inspect the sip
inspect the netbios
inspect the tftp
Review the ip options
inspect the icmp
!
global service-policy global_policy
context of prompt hostname
no remote anonymous reporting call
Cryptochecksum:9ddde99467420daf7c1b8d414dd04cf3
: end
ASA #.Doug,
The nat will knit from inside to out if the LAN is 192.168.20.0 nat should be like this:
access-list SHEEP extended ip 192.168.20.0 allow 255.255.255.0 172.16.0.129 255.255.255.128
Just to get this clear you use remote VPN, you must add the 192.168.20.0 to split ACL road tunnel:
SPLIT_TUNNEL list standard access allowed 192.168.20.0 255.255.255.0
-JP-
-
Hello
I d wishes to establish a vpn to a pix firewall 515 and pos version
7.0 (5) with a public dmz and nat translation.
inside: 10.5.10.0/24
outdoors: 1.1.1.1/27 (Beach)
DMZ: 2.2.2.2/27 (Beach)
distance inside the network:192.168.20.0/24
My area of encryption should be: 2.2.2.3/32--192.168.20.0/24
announcement I have a nat rule, which is:
NAT (inside the dmz) 2.2.2.3 10.5.10.28 netmask 255.255.255.255
So basically I want to translate the connections coming from 2.2.2.3 to
10.5.10.28
the vpn is configured correctly and set up both sides, but the nat rule
with the vpn doesn't work.
Built of incoming TCP connections to outside:192.168.20.82/34237 4619
(192.168.20.82/34237) at dmz:2.2.2.3/22 (2.2.2.3/22)
but I can t see any traffic on the 10.5.10.28 Server, I see instead:
Built of incoming TCP connections to outside:192.168.20.82/34237 4619
((192.168.20.82/34237) at dmz:10.5.10.28/22(10.5.10.28/22)
any help would be great!
Kind regards
dural
Dural salvation
Could you specify just the line
NAT (inside the dmz) 2.2.2.3 10.5.10.28 netmask 255.255.255.255
should we read
2.2.2.3 static (inside the dmz) 10.5.10.28 netmask 255.255.255.255
Also are you terminating the VPN on the external interface of your firewall is to say what is the IP address of the peer to your end.
You might not try
static (inside, outside) 2.2.2.2 10.5.10.28 netmask 255.255.255.255
* Edit - I meant
static (inside, outside) 2.2.2.3 10.5.10.28 netmask 255.255.255.255 *.
You need not actually traffic to DMZ, you?
If not do you have IP addresses available in the public system on your external interface?
HTH
Jon
-
Apart from the demilitarized zone or static NAT?
Hello!
I'm trying to implement the static translation from outside my network in DMZ. I tried with nat, global and static use but failed with both. The problem is that packets are go to the servers in the DMZ but nothing is returned to the sender. Also, when I try to access a Web server in DMZ I get SYN timeout.
The traffic of my LAN (inside) local DMZ works as it should however.
-Important conf--->
access-list ON scope allowed any ip a
Global interface (dmz) 12
NAT (outside) - 12 OUT out access list
Access-group OUT in the interface outside
no nat control
-more than information--->
Interior - the security of IP 10.0.13.1 level 100
DMZ - security level 50, IP 172.16.13.1
outer - level 0, the security of IP 192.168.13.2
Bastionhost = Web server
-See the nat--->
Policy NAT outside interface:
match any ip outside any demilitarized zone
dynamic translation to the pool of 12 (172.16.13.1 [Interface PAT])
translate_hits = 2, untranslate_hits = 0
When I used static instead of nat, overall I had so many untranslate_hits I sent to servers in DMZ.
-Debug--->
Built dynamic TCP translation of outside:192.168.13.5/1316 to dmz (OUT): 172.16.13.1 / 1028
Built of 469 for incoming TCP connections to dmz:bastionhost (172.16.13.1/1028) outside:192.168.13.5/1316 / (bastionhost/80) 80
Disassembly of the TCP dynamic translation of outside:192.168.13.5/1317 to dmz (OUT): 172.16.13.1 / 1029 0 duration: 00:39
Disassembly TCP 473 for outside:192.168.13.5/1318 to dmz:bastionhost connection / 80 0 duration: 00:30 bytes 0 SYN Timeout
Thank you.
Your following config is fine, your bastionhost here with a public IP address of mapping that will allow the access server to the internet as well.
allowed any icmp extended WEB access list a--> add this option to test accessibility outside bastionhost / internet and remove it later.
IP any host 192.168.14.5-> or add 'eq www' to specify the port allow Access - list extended WEB.
static (dmz, outside) tcp 192.168.14.5 www bastionhost www netmask 255.255.255.255
group-access WEB interface outside
You can omit the next part that meant allowing internet access only, bastionhost not allowing users to access.
Global 1 192.168.14.5 (outside)
NAT (dmz) 1 bastionhost 255.255.255.255
BTW, what is the State of the road looks like?
-
Sles11 SP2 on C220-M3 vNIC errors
Hello
We have installed SP2 Sles11 on our new C220-M3 (1.5.1b), which is connected to our N5k with a VIC 1225 and the default of two NICs for eth0 and eth1.
What we see with the driver by default the Sles11 enic has a lot of packet loss. The N5k is configured as a VIRTUAL local network access mode.
We thougt packet loss came perhaps the VLAN or access in the vNIC eth0 mode missing.
But ff, we try to define the VLAN and the access mode, in the way great CLI, the same VLAN access on the N5k,.
then it may, after a reboot, of course, no more TCP/IP connections made.
We find no related documents for such a 'normally easy' installation remove a server with a 10 Gbit vNIC default and works correctly.
So we find no proper documentation for SLES11, enic-driver and the vNIC on a C220 (or associated with).
Thanks in advance for advice on this one.
If anyone can throw some lights on it, I'm happy to do a documentation on this one. If it doesn't work. ;-)
All the best
Timo
OK, here's a bit more of a message:
3 Jun 15:21:32 HOSTNAME kernel: [2808.923467] 0000:08:00.0 enic: eth0: link down
3 Jun 15:21:32 HOSTNAME kernel: [2808.924528] host0: embed: link down on the port (000000)
3 Jun 15:22:39 HOSTNAME kernel: [2875.333162] 0000:08:00.0 enic: eth0: Link UP
And this is the time when each connected TCP/IP traffic is cut off.
And a few orders to check lldp peers connected to N5K
Show lldp nei
display system interface eth internal dcbx info x / y | no more
local ethanalyzer of the incoming-Hi interface filter display vlan .etype == 0x88cc limit-captured-frames 0
HTH
Padma
-
[VPN site to Site] Are route explicit LAN remote necessary?
Hello
I have configured the VPN Site to be used inside the interface of the ASA (9.4.1)
- The computer in the Zone 1 (192.168.1.1), I can access the Intranet all and it works without a problem--> all traffic through the VPN.
For example, I can use 10.0.0.1 on remote desktop.
2. in the other direction, 10.0.0.1, I try to use the remote desktop on 192.168.1.1, the traffic is not routed over the VPN.
Journal: ' build incoming TCP connections to inside:10.0.0.1/1539 outdoors: 192.168.1.1/3389.
In case 1 (when it worked), he says "build the incoming TCP connection for inside:192.168.1.1/2039 to inside:10.0.0.1/3389.
To fix it, I had to add specific route on ASA: 192.168.1.0/24 inside
It works on both directions.
Is this a normal behavior?
I thought that cryptomap and IPSec SPI would be sufficient.
Thank you
Patrick
Yes, because the cryptomap is mapped to the output interface. The research of the way occurs before you hit the cryptomap. The opposite lane works because you already have a connection (in which are defined interfaces to use).
-
Hello
I'll set up a ASA 5550 as a VPN concentrator, so that clients connect to my Web inside the ASA server. all things appear functioned properly (the customer can access the server), the problem I have is when I configure an ACL to allow only port 80 (http/www) and deny all other traffic, I note that the ACL does not work, I mean I still have full access to the server from the client.
This is the config I've done:
inside_access_out list extended access permitted tcp 10.20.0.0 255.255.255.0 192.168.200.100 eq www
inside_access_out deny ip extended access list a whole
Access-group interface inside inside_access_out
I also tried to do the following, but I noticed the same problem:
access-list extended inside_access_in permit tcp host 192.168.200.100 eq www 10.20.0.0 255.255.255.0
inside_access_in deny ip extended access list a whole
inside_access_in access to the interface inside group
Could someone help me solve this problem?
Best regards /.
Ismail
Where is the map encryption applied? Are you trying to filter incoming or outgoing traffic?
By default, when the following command is enabled:
Sysopt connection permit VPN
VPN traffic will bypass the rules configured on the interface of the encryption card applied to.
I suggest to use VPN-filters:
-
Best practices ACL - on the Internet interface
I have a question relating to the ACL on an interface oriented routers 'Internet '.
After reading several whitepapers on the subject, an ACL recommended would typically contain the following instructions.
In addition, the Cisco SDM automatically generates an ACL externally similar face:
IP extended INBOUND access list
permit any any icmp echo
permit any any icmp echo response
allow all all unreachable icmp
deny ip 10.0.0.0 0.255.255.255 everything
deny ip 172.16.0.0 0.15.255.255 all
deny ip 192.168.0.0 0.0.255.255 everything
deny ip 127.0.0.0 0.255.255.255 everything
refuse the host ip 0.0.0.0 everything
refuse an entire ip
!
So my question is...
What is the point of lines 4-8 during the last line blocking them anyway?
I understand that when we discover the ACL there's the number of matches by explicit ACL entry, but in terms of blocking, I don't see the advantage.
Instead, the following ACL would provide the same benefit and be easier to maintain.
IP extended INBOUND access list
permit any any icmp echo
permit any any icmp echo response
allow all all unreachable icmp
refuse an entire ip
!
Am I missing something obvious?
Thanks in advance for the help,
Kind regards.
Hello Peter,.
I believe that when people post these examples, they assume you will put additional instructions forward the "deny ip any any" at the end. There are really a few rules that you must use when you create an Internet facing ACL:
1 deny incoming traffic from your IP addresses registered to prevent identity theft.
2 refuse incoming Microsoft LAN traffic (port 445, 137-139, etc)-any legitimate Microsoft LAN traffic should be limited to a VPN.
3 deny traffic from private addresses or null.
I'm sure that you realize that packages can be made with the ILO established is enabled and use private addresses (broadcast or unicast) or your addresses as a source to create the undesirable traffic or denial of service attacks. That's why these statements are called separately. You would use before the "permit tcp everything (recorded your IP range), set up" statement.
Your ACL proposed only allows tcp responses to queries generated internally. Unless you really don't want any UDP traffic, you must include a reflexive access list statement to allow the UDP. I hope also that you have a big server log or only a few hosts on your network - check all tcp traffic will take a little space!
-
PIX: Cisco VPN Client connects but no routing
Hello
We have a Cisco PIX 515 with software 7.1 (2). He accepts Cisco VPN Client connections with no problems, but no routing does to internal networks directly connected to the PIX. For example, my PC is affected by the IP 172.16.2.57 and then ping does not respond to internal Windows server 172.16.0.12 or trying to RDP. The most irritating thing is that these attempts are recorded in the system log, but always ended with "SYN timeout", as follows:
2009-01-06 23:23:01 Local4.Info 217.15.42.214% 302013-6-PIX: built 3315917 for incoming TCP connections (172.16.2.57/1283) outside:172.16.2.57/1283 inside: ALAI2 / 3389 (ALAI2/3389)
2009-01-06 23:23:31 Local4.Info 217.15.42.214% 302014-6-PIX: TCP connection disassembly 3315917 for outside:172.16.2.57/1283 inside: ALAI2 / 3389 duration 0:00:30 bytes 0 SYN Timeout
2009-01-06 23:23:31 Local4.Debug 217.15.42.214% 7-PIX-609002: duration of disassembly-outside local host: 172.16.2.57 0:00:30
We tried to activate and deactivate "nat-control", "permit same-security-traffic inter-interface" and "permit same-security-traffic intra-interface", but the results are the same: the VPN connection is successfully established, but remote clients cannot reach the internal servers.
I enclose the training concerned in order to understand the problem:
interface Ethernet0
Speed 100
full duplex
nameif outside
security-level 0
IP address xx.yy.zz.tt 255.255.255.240
!
interface Ethernet1
nameif inside
security-level 100
172.16.0.1 IP address 255.255.255.0
!
access extensive list ip 172.16.0.0 inside_nat0_outbound allow 255.255.255.0 172.16.2.56 255.255.255.248
!
access extensive list ip 172.16.0.0 outside_cryptomap_dyn_20 allow 255.255.255.0 172.16.2.56 255.255.255.248
!
VPN_client_group_splitTunnelAcl list standard access allowed 172.16.0.0 255.255.255.0
!
IP local pool pool_vpn_clientes 172.16.2.57 - 172.16.2.62 mask 255.255.255.248
!
NAT-control
Global xx.yy.zz.tt 12 (outside)
NAT (inside) 0-list of access inside_nat0_outbound
NAT (inside) 12 172.16.0.12 255.255.255.255
!
internal VPN_clientes group strategy
attributes of Group Policy VPN_clientes
xxyyzz.NET value by default-field
internal VPN_client_group group strategy
attributes of Group Policy VPN_client_group
Split-tunnel-policy tunnelspecified
value of Split-tunnel-network-list VPN_client_group_splitTunnelAcl
xxyyzz.local value by default-field
!
I join all the details of the cryptographic algorithms because the VPN is successfully completed, as I said at the beginning. In addition, routing tables are irrelevant in my opinion, because the inaccessible hosts are directly connected to the internal LAN of the PIX 515.
Thank you very much.
can you confirm asa have NAT traversal allow otherwise, activate it in asa and vpn clients try again.
PIX / ASA 7.1 and earlier versions
PIX (config) #isakmp nat-traversal 20
PIX / ASA 7.2 (1) and later versions
PIX (config) #crypto isakmp nat-traversal 20
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