TCP timeouts
Guys,
I am looking for a single document that describes the configurable timeouts in the PIX for the following:
(1) TCP half-closed connections
(2) connections,
(3) half-closed connections
I remember seeing a table describing these (delays in waiting or limits-embryonmic) settings, but I can't seem to find on the site now.
Thanks in advance for your help,
Vito
Ahhh, finally got there. No, the half-open connection timer is not configurable. It is however for 2 minutes. That means that, as soon as we get the initial SYN packet in, the second has mons 2 before delete us it.
And no problem on the long thread.
Scott
Tags: Cisco Security
Similar Questions
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I understand that other discussions on this topic are already, but I still have to find a solution among them.
Here's the scenario:
I have a PC (running Win7) which is connected to a monitor Signal Agilent N9020A MXA (WinXP) host over a LAN connection. The reason behind the connection to the LAN via the GPIB is software VSA 89601 B added I want to access through SCPI commands through code LabView on the host PC. According to Agilent, it's one of the ways to do so.
I have IPS assigned and specified the Agilent recommended port 5024 for a TCP/IP connection. I am able to write commands using TCP write using LabView, but I can't read anything by using TCP Read. Indeed, according to some variations of the options I tried of the subjects of the previous forum, I always end up with error 56 or 66.
I checked that the SCPI command is working to extract data using Agilent IO Interactive. It should be fairly simple. Because I want to automate this process, please help? What Miss me?
Thank you in advance.
Solved.
Remove the end must be disabled to get rid of Reading TCP timeout.
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Hello
What is the default TCP on ACE time and how I can check it out. I have the sticky time set to 720 minutes. It applies to TCP timeout as well.
If you have not configured the parameter map and applied to the policy then ACE certainly will use the default values.
A way to test, it could be opening a new tcp connection and use the commmand "view details of conn" with the ip address of dest.
Conn detail | beg 10.10.10.10
and search for [timeout: xx:xx:xx].
downtime gives you the downtime for this connection.
HTH
Syed Iftekhar Ahmed
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Hello!
Now check the status of TCP socket in wait times.
TCP is a connection Windows server and controller for cRIO with LabVIEW applications.
I don't know everything made on the State of demand in my cRIO I decide for information on physical connection timeout of entry level and application level - reading Timeout (if I can't send something - ethernet is not bound or socket is dead; if I did packets sent and get timeout response read only (: my application the cRIO died).
But when I disconnect ethernet - I do not write timeout error regardless of the value of timeout, I don't get any errors on the writing at all. I'm reading wait times only (because my system gets all the packages to answer) and then, after some time, error 66 on writing (I think - when my disconnection on its side and is TCP cRIO now the listening TCP by his own time-outs device).
Why it's happening?
Are there other tools to get the status of the socket (at least to his physical level only)?
WBR,
Igor
Hello Igor.
Unfortunately, the timeout for TCP to write command does not work as most people expect. This discussion forum:
Crosses, why this is and what the timeout command is actually configuration as well as different ways to circumvent this.
Thank you!
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Hello
Request: I'm using LabVIEW 8.2 to connect with a RFID reader.
I connect to the player via TCP and write (write block TCP) a number of orders (connection, system of game settings, player tags list queries), and my VI works smoothly, with one exception: since I don't know how many tags in advance will be near the read drive ability, I have no method to measure the length of the data back (the block of reading TCP bytes to read).
To break down the problem, I can either read a very small number of bytes and avoid a time-out error 56, losing some data back in the process, or I can allow the system to timeout, read a large number of bytes and allowing every step of execution take time designated in the time-out period rather than the amount of time it takes indeed for the reader to respond.
My question, simplified: is there a way I can use the TCP protocol to read only the data that is sent (rather not specify the number of bytes that will be read, which allows the VI to make when no additional data is available)?
Thank you in advance.
As far as I know, there is no way to check the amount of data it is in advance. Some protocols have a predefined byte quantity, or send a message by sending the length of the message, for you first read and know how many bytes you need.
If you can not do that, what you want to do is call reading TCP primitive in a while loop until you get an error in time-out and the warp threads in a tunnel of automatic indexing output. You can then wire the string array resulting 1 d in the string concatenate primitive to convert it to a string. In this way, you can use a short timeout and read a small number of bytes for each reading without loss of information.
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Hi all
I'm new in the world of labview and trying to build a VI that sends commands to a controller of the WAGO 750-881 at regular intervals of 10 ms.
To set each of the WAGO comics at the same time, I try so to send the Modbus fc15 command every 10ms using Labview standard TCP write module.
When I run the VI it works for about a minute before receiving an error message 56 telling me the TCP connection has expired. This strange thought, I decided to record the number of bytes sent via the TCP connection while running the program. In doing so, I noticed that the link broken after exactly 113655 bytes of data have been sent each time.
Thinking can I have sent too many messages, I increased the delay of the loop of 10ms to 20, 100 and 200 ms, but the error remained. I also tried to play with the TCP connection timeout and the writing TCP timeout, but none of these had no effect on the problem.
I do not see why this error occurs, such as the program works perfectly up until what brand 113655 bytes.
I've attached a screenshot of the base VI (simply showing a MODBUS command sent every second) and a more advanced VI (where I am able to control each of the WAGO manually by setting a frequency at which the DO is to switch between ON and OFF).
If anyone has any ideas on where the problems lie, or that I could do to debug more program this would be greatly appreciated.
AvdLinden wrote:
Hi ThiCop,
Yes, the error occurs after exactly 113655 bytes each time. Time-out control, I would like to use is 10ms, but even that will rise to 1 s or 10s does not error, which leads me to believe that's not the issue (as well, do not add any delay in the while loop, so let it run at the maximum speed showed that the TCP connection is able to send all the bytes 113655 in less than 3 seconds again directed towards control of time-out) is is not the issue here).
I tried the suggestion of Marco but having difficulty to translate the string returned in a readable string (rightnow the answer given is "-# +" ' ").
As for your second suggestion, I've implemented something similar, where I created a sub VI to establish a TCP connection, send a message and then close the connection. I have now to build each message and then send the string to the Subvi, which sends the command to my application successfully. While not the most elegant method to solve the problem, it solves the problem of time-out, which means that I am able to send as many orders as I want. So in this sense, the problem has been resolved.
If you have advice on how to properly read the TCP read the output, I want however to see if I could not get my first program to work because it is slightly more robust in terms of timing.
MODBUS RTU TCP is a binary protocol, as you show in your base VI, where you put in the form the data stream using byte values. So you have to interpret the returned answer accordingly with the Modbus RTU spec in the hand. Now what is probably happening is that the connection is suspended after a while because you do NOT read data from the device sends as response to your commands. The TCP/IP stack cushions these bytes and at certain point of overflow internal buffers and the connection is blocked by the battery. So to add playback of TCP in strategic locations (usually after each entry) is the right solution for this. Is there a reason any that you do not use the PROVIDED Modbus TCP library?
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CSCub20591 - TCP connection expires on H323 call and40; Firewall problem
Hey all,.
I have a client that has this problem. I sent him the details of this bug, but he has no idea of what setting would need update on its ASA to fix this time-out period.
Anyone have any ideas?
Thank you
JustinHey Justin, funny see you here, haha.
I never ran on precisely this issue, but I know about the ASA you can set timeouts for different classes of traffic, essentially matching via ACL and by applying a global or interface-specific policy via.
Some notes on the method I found here - and http://www.networkoc.net/increase-tcp-timeouts-on-traffic-destinated-to-your-sql-server-cisco-asa-8-2/
Official documentation Cisco - http://www.cisco.com/c/en/us/td/docs/security/asa/asa84/configuration/guide/asa_84_cli_config/conns_connlimits.html#wp1179119
If all goes well which can help to point in the right direction.
See you later!
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Hello
Understand that there are some parameters of time-out on pix. Need to check:
1 TCP timeout 01:00. In my view, that it is idle time-out. PIX send TCP reset after timeout?
2. 03:00 timeout Xlate. Is - this time out inactive?
PIX send TCP reset after timeout?
Yes, according to the information in the original post, the PIX should remove any xlates that has been inactive for 3 hours. Once these are removed, the need of xlates should be re-established a connection to occur.
Does that help?
Scott
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TAF and time-outs TCP - AMT Config - VIP
Hi all
I'm reviewing a configuration of 11 g Dataguard (1 primary-> 1 physical standby) 2. I was just curious, given the underside of tns, wouldn't the customer receive/wait for a TCP time-out after 3 minutes if the main server was actually full down.
Here if the scenario, I do a permutation of primary eve-> all the links already connected are passed to the first new using TAF.
Now, all those already connected before the swtichover are ok, but the news of the day before (primary source) is now completely down, I have to change the entry of TNS for use instead of the VIP for new connections not TCP timeout?
Below is a reference Tom Kyte, but I was wondering if anyone else had already implemented it.POMS= (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = orap01.intm.com)(PORT = 1521)) (ADDRESS = (PROTOCOL = TCP)(HOST = orap02.intm.com)(PORT = 1521)) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = POMSDG.mf.galderma.com) ) )
Thank you in advance for your advice or assistance in this case.Here it solution: ----------------- 1) tnsnames.ora entry will have connect time failover configured for primary and standby. 2) If primary database is down but primary node is up. The above will work fine. 3) But if primary database is down and primary node is also down. The each attempt to connect using tnsnames.ora will go through a TCP timeout. solution for 3: b) On another node in primary subnet - bind/start the Failed database node IP. This can be done via a script. Make sure to shut this down, when bringing up the failed primary node. (This is kind of a manual VIP failover)
Jan S.Hello
Read this white paper:
http://www.Oracle.com/technetwork/database/features/availability/MAA-WP-11gr2-client-failover-173305.PDF
... and if you still have questions post again.
Concerning
Sebastian -
I am having some problems with my network code IO on OS5 of BlackBerry.
I get sporadic crashes and eventually TCP timeout exceptions during my IO operations.
I use the 5.0 network API to establish the connection works perfectly every time.
The problem is when you do the actual IO. I have a background worker thread serving a queue i/o requests. There is only a single background for all thread requests are serialized on this thread.
Completion notification is made through a delegate interface that is passed when the request is pending. The completion delegate is called on the thread of substantive work, but guests are free to repost this to the event via invokeLater thread make UI updates etc.
Notes:
I did some file download large treatment OS 5.0, including "BOLD", 9520 and 9700 devices. All of these simulators are desperate, they lock themselves in the same reading that you have identified. the 9520 is the best, rarely, it crashes and is a little better with BONES later. However, the 9700 is a nightmare.
What I did, it is a mechanism of stall detection, code if I'm stuck in this loop, I therefore interrupt the flow, and try again.
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remote VPN does not work on Cisco 7206
Hello
I do a test to set up remote access to VPN from Cisco 7206 (simulated by dynamips). The relevant configuration is the following:
hub host name
AAA new-model
AAA authentication login local xauth
username ciscouser password 0 cisco1234
IP subnet zero
crypto ISAKMP policy 10
md5 hash
Group 2
preshared authentication
test group crypto isakmp client configuration
key cisco123
pool mypool
card crypto REMOTEACCESS client authentication list xauth
Crypto ipsec transform-set RTP-TRANSFORMATION des-esp esp-md5-hmac
Vpn crypto dynamic-map 1
game of transformation-RTP-TRANSFORM
open crypto map REMOTEACCESS client configuration address
card crypto client configuration address respond REMOTEACCESS
card crypto REMOTEACCESS 1-isakmp dynamic vpn ipsec
interface Ethernet0/0
IP address 150.1.1.1 255.255.255.0
card crypto REMOTEACCESS
interface Ethernet0/1
IP 11.10.1.1 255.255.255.0
no ip directed broadcast to the
IP local pool mypool 10.1.10.0 10.1.10.254
IP nat translation timeout never
IP nat translation tcp-timeout never
IP nat translation udp timeout never
IP nat translation finrst-timeout never
IP nat translation syn-timeout never
IP nat translation dns-timeout never
IP nat translation icmp timeout never
IP classless
IP route 0.0.0.0 0.0.0.0 10.103.1.1
no ip address of the http server
end
However, when I try to connect the router using the Cisco 4.6 client, you receive the following error message:
05:04:52: ISAKMP (0:1): audit ISAKMP transform 13 against the policy of priority 10
05:04:52: ISAKMP: DES-CBC encryption
05:04:52: ISAKMP: MD5 hash
05:04:52: ISAKMP: group by default 2
05:04:52: ISAKMP: auth XAUTHInitPreShared
05:04:52: ISAKMP: type of life in seconds
05:04:52: ISAKMP: life (IPV) 0x0 0 x 20 0xC4 0x9B
05:04:52: ISAKMP (0:1): pre-shared key offered Xauth authentication but does not match policy.
05:04:52: ISAKMP (0:1): atts are not acceptable. Next payload is 3
05:04:52: ISAKMP (0:1): audit ISAKMP transform 14 against the policy of priority 10
05:04:52: ISAKMP: DES-CBC encryption
05:04:52: ISAKMP: MD5 hash
05:04:52: ISAKMP: group by default 2
05:04:52: ISAKMP: pre-shared key auth
05:04:52: ISAKMP: type of life in seconds
05:04:52: ISAKMP: life (IPV) 0x0 0 x 20 0xC4 0x9B
05:04:52: ISAKMP (0:1): pre-shared authentication offered but does not match policy.
05:04:52: ISAKMP (0:1): atts are not acceptable. Next payload is 0
Does anyone have an idea? Thanks in advance.
Wang,
Thanks for the update! Happy in his work.
The commands below are for the search for group policy.
AAA authorization groupauthor LAN
card crypto isakmp authorization list groupauthor REMOTEACCESS
Since then, you have configured Group Policy (name, presharedkey, etc.) locally on the router, you must specify the router where to look for the isakmp policy when VPN cace tries to connect.
I hope it helps.
Kind regards
Arul
* Please note all useful messages *.
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Problem with ping VPN cisco 877
Hi all!
I have a working VPN between a fortigate and a Cisco.
I have a problem with ping network behind the cisco of the network behind the forti.
When I ping to vlan2 cisco without problem (192.168.252.1) interface, but I can't ping a server in the vlan2 (192.168.252.2) behind the cisco.
However the Cisco I can ping the server. In the forti, I see that ping to the interface vlan2 and server in vlan2 take in the same way, and I can see package.
I post my config could see it it as blocking the ping from 10.41.2.36 to 192.168.252.2 while 192.168.252.1 ping is OK?
IPSEC #show run
Building configuration...Current configuration: 3302 bytes
!
! Last modification of the configuration at 14:42:17 CEDT Friday, June 25, 2010
! NVRAM config update at 14:42:23 CEDT Friday, June 25, 2010
!
version 12.4
no service button
horodateurs service debug datetime msec
Log service timestamps datetime localtime show-time zone
encryption password service
!
IPSEC host name
!
boot-start-marker
boot-end-marker
!
logging buffered 1000000
enable secret 5 abdellah
!
No aaa new-model
clock timezone GMT 1
clock to summer time CEDT recurring last Sun Mar 02:00 last Sun Oct 03:00
!
!
dot11 syslog
IP cef
No dhcp use connected vrf ip
DHCP excluded-address IP 192.168.254.0 192.168.254.99
DHCP excluded-address IP 192.168.254.128 192.168.254.255
!
IP dhcp DHCP pool
network 192.168.254.0 255.255.255.0
router by default - 192.168.254.254
Server DNS A.A.A.A B.B.B.B
!
!
no ip domain search
name of the IP-server A.A.A.A
name of the IP-server B.B.B.B
!
!
!
!
!
crypto ISAKMP policy 1
BA aes 256
preshared authentication
Group 5
ISAKMP crypto key ciscokey address IP_forti
!
!
Crypto ipsec transform-set esp - aes 256 esp-sha-hmac vpntest
!
myvpn 10 ipsec-isakmp crypto map
defined by peer IP_forti
Set transform-set vpntest
match address 101
!
Archives
The config log
hidekeys
!
!
!
!
!
interface Tunnel0
IP 2.2.2.1 255.255.255.252
source of Dialer0 tunnel
destination of IP_forti tunnel
myvpn card crypto
!
ATM0 interface
bandwidth 320
no ip address
load-interval 30
No atm ilmi-keepalive
DSL-automatic operation mode
!
point-to-point interface ATM0.1
MTU 1492
bandwidth 160
PVC 8/35
VBR - nrt 160 160
PPPoE-client dial-pool-number 1
!
!
interface FastEthernet0
switchport access vlan 2
!
interface FastEthernet1
!
interface FastEthernet2
!
interface FastEthernet3
switchport access vlan 2
!
interface Vlan1
IP 192.168.20.253 255.255.255.0
IP nat inside
no ip virtual-reassembly
!
interface Vlan2
IP 192.168.252.1 255.255.255.0
IP nat inside
IP virtual-reassembly
!
interface Dialer0
bandwidth 128
the negotiated IP address
NAT outside IP
no ip virtual-reassembly
encapsulation ppp
load-interval 30
Dialer pool 1
Dialer-Group 1
KeepAlive 1 2
Authentication callin PPP chap Protocol
PPP chap hostname [email protected] / * /
PPP chap password 7 abdelkrim
myvpn card crypto
!
IP forward-Protocol ND
IP route 0.0.0.0 0.0.0.0 Dialer0
IP route 10.41.2.32 Tunnel0 255.255.255.240
!
no ip address of the http server
no ip http secure server
The dns server IP
translation of nat IP tcp-timeout 5400
no ip nat service sip 5060 udp port
overload of IP nat inside source list NAT interface Dialer0
!
IP access-list standard BROADCAST
permit of 0.0.0.0
deny all
!
NAT extended IP access list
IP enable any host IP_cisco
deny ip 192.168.252.0 0.0.0.255 10.41.2.32 0.0.0.31
!
access-list 101 permit ip 192.168.252.0 0.0.0.255 10.41.2.32 0.0.0.31
public RO SNMP-server community
3 RW 99 SNMP-server community
SNMP-server community a RO
SNMP-Server RO community oneCommunityRead
not run cdp
!
!
!
control plan
!
!
Line con 0
password 7 abdelkrim
opening of session
no activation of the modem
line to 0
line vty 0 4
password 7 aaaaa
opening of session
escape character 5
!
max-task-time 5000 Planner
NTP-period clock 17175037
Server NTP B.B.B.B
Server NTP A.A.A.Aend
Alex,
It's your GRE tunnel:
interface Tunnel0
IP 2.2.2.1 255.255.255.252
source of Dialer0 tunnel
destination of IP_forti tunnel
myvpn card cryptoYou also have routing set by it.
You don't need a GRE tunnel, nor do you need the road to tunnel if you want just IPsec tunnel.
-
I have set up a cisco 861 as a vpn server. Could I help you if someone can tell what is the problem? Clients can connect, but cannot access local resources from lan for subnet 10.0.10.0
Building configuration...
Current configuration: 9770 bytes
!
version 12.4
no service button
tcp KeepAlive-component snap-in service
a tcp-KeepAlive-quick service
horodateurs service debug datetime msec localtimeShow time-zone
Log service timestamps datetime localtime show msec.time zone
encryption password service
sequence numbers service
!
hostname RT861W
!
boot-start-marker
start the flash c860-universalk9 - mz.124 - 24.T3.bin system
boot-end-marker
!
forest-meter operation of syslog messages
logging buffered 4096 warnings
recording console critical
enable secret 5 xxxxxxxx
!
AAA new-model
!
!
AAA authentication login default local
AAA authentication login userauthen local
AAA authorization groupauthor LAN
!
!
AAA - the id of the joint session
iomem 10 memory size
clock timezone IS - 4
clock save interval 24
!
Crypto pki trustpoint TP-self-signed-3796206546
enrollment selfsigned
name of the object cn = IOS-Self-signed-certificate-3796206546
revocation checking no
rsakeypair TP-self-signed-3796206546
!
!
chain pki crypto TP-self-signed certificates.3796206546
certificate self-signed 01
30820259 308201 2 A0030201 02020101 300 D 06092A 864886 F70D0101 04050030
2 060355 04031326 494F532D 53656 C 66 31312F302 536967 6E65642D 43657274
69666963 33373936 32303635 6174652D 3436301E170 3130 30363130 32323534
33395A 17 0D 323030 31303130 30303030 305A 303106035504 03132649 312F302D
65642 43 65727469 5369676E 656C662D 4F532D5366696361 74652 33 37393632
3630819F 30363534 300 D 0609 2A 864886 F70D010101050003 818 0030 81890281
81009C 68 0509FEBA BA0D4251 52AA3F1C DBB7CACB138D0D3D 8017AB75 04AABD97
16DE7A44 31B18A6C 5DE8F289 CF5D71EA AF9BA2F6EB32858B 4385DE6C 3ED11616
2B997D14 C6C86431 9A 956161 2D0581F4 767D60E182FF426A 911D503E 8995A69B
6F7A4D9A 9AEA14DE 8A62570E C9C3A913 25E5E464E6DA7E06 44F94B16 3EA57809
5B 710203 010001 HAS 3 8180307E 300F0603 551D 130101FF0405 FF302B06 30030101
11 04243022 82205254 38363157 2E636F6C 03551D6C696E73 2E316661 6D696C79
756E6974 65642E63 6F6D301F 0603551D 230418301680142C 21E7314B D28AFE1A
26115A1B F53AFB03 1 060355 1D0E0416 0ED1A83004142C 21 E7314BD2 8AFE1A26
115A1BF5 3AFB030E D1A8300D A 06092, 86 4886F70D01010405 00038181 008CC48F
6A1BFB52 0F268B05 B977AE8E CA450936 8272 D 889B46DE9FB 5680782C 59DA2354
04CE6AD2 F280FB20 32B3897B CF0919F9 C0719F22C7BED922 73C35C32 54696F37
89E424C2 561FFF54 99573AC6 713E58D8 E3B67064295 4331 845FCDEC F6CD8017 D
58006 58 F94A8771 78217788 FE63AA11 0E5DF6B11A8D0111 CDD87A1D CC
quit smoking
no ip source route
no ip free-arps
chip-Relay IP dhcp
ignore the IP dhcp bootp
DHCP excluded-address IP 10.0.1.1 10.0.1.10
DHCP excluded-address IP 10.0.10.1 10.0.10.10
!
dhcp VLAN_10 IP pool
Network 10.0.10.0 255.255.255.224
router by default - 10.0.10.1
Domain xxxxxx
10.0.10.1 DNS server
!
dhcp VLAN_1 IP pool
Network 10.0.1.0 255.255.255.224
default router 10.0.1.1
Domain xxxxxx
10.0.1.1 DNS server
!
!
IP cef
inspect the IP log drop-pkt
IP inspect high 1100 max-incomplete
IP inspect 1100 max-incomplete bass
IP inspect a high minute 1100
IP inspect a minute low 1100
inspect the IP udp idle time 60
inspect the IP dns-timeout 10
inspect the name firewall tcp timeout IP 3600
inspect the name firewall udp timeout 15 IP
inspect the name firewall ftp queue time 3600 IP
inspect the name firewall rcmd timeout IP 3600
IP inspect alert firewall smtp name on timeout 3600
inspect the name firewall sqlnet timeout IP 3600
inspect the IP name firewall tftp timeout 30
inspect the name firewall icmp time 15 IP
inspect the name firewall ssh timeout 15 IP
IP inspect name Connection Firewall audit trail on
inspect the name webster firewall IP
IP inspect skinny firewall name
inspect the router IP firewall name
inspect the IP firewall cifs name
inspect the name cuseeme firewall IP
IP inspect the dns name of the firewall
inspect the name realaudio firewall IP
inspect the name firewall rtsp IP
inspect the name streamworks firewall IP
inspect the name vdolive firewall IP
inspect the IP sip firewall name
inspect the name firewall pop3 alert on reset IP
inspect the name ftps firewall IP
inspect the name isakmp firewall IP
inspect the IP name of firewall ipsec-msft
inspect the name ntp FIREWALL IP
inspect the IP name firewall imap
inspect the name imaps firewall IP
inspect the name imap3 FIREWALL IP
inspect the name pop3s firewall IP
no ip bootp Server
IP domain name xxxxxxxxx
8.8.8.8 IP name-server
IP-server names 8.8.4.4
name-server IP 208.67.222.222
IP-server names 208.67.220.220
name of the IP-server 74.128.19.102
name of the IP-server 74.128.17.114
!
!
notify licensing agenthttp://10.0.10.11:9710 / clm/servlet/HttpListenServlet
dummy dummy 2.0
!
!
username privilege 15 secret 5 xxxx xxxxxx
username xxxxx xxxxx secret 5
!
!
crypto ISAKMP policy 3
BA aes 256
preshared authentication
Group 2
ISAKMP crypto nat keepalive 3600
!
ISAKMP crypto client configuration group xxxxx
key xxxxxx
DNS 10.0.10.5
domain xxxxxxxx
pool vpnpool
include-local-lan
netmask 255.255.255.224
!
!
Crypto ipsec transform-set esp esp - aes 256 RIGHT-model of hmac-SHA-lzs
!
Crypto-map dynamic dynmap 10
Set transform-set RIGHT
market arriere-route
!
!
list of card crypto clientmap client authenticationuserauthen
card crypto clientmap isakmp authorization listgroupauthor
client configuration address map clientmap cryptoinitiate
client configuration address map clientmap cryptoanswer
10 ipsec-isakmp crypto map clientmap Dynamics dynmap
!
Crypto ctcp port 6000
Archives
The config log
hidekeys
!
!
synwait-time of tcp IP 10
property intellectual ssh time 60
property intellectual ssh authentication-2 retries
Bridge IRB
!
!
!
interface Loopback0
IP 10.100.100.1 255.255.255.0
IP nat inside
IP virtual-reassembly
!
Null0 interface
no ip unreachable
!
interface FastEthernet0
switchport access vlan 10
!
interface FastEthernet1
switchport access vlan 10
!
interface FastEthernet2
switchport access vlan 10
!
interface FastEthernet3
switchport access vlan 10
switchport mode trunk
!
interface FastEthernet4
WAN description $ FW_OUTSIDE$
address IP dhcp client id FastEthernet4
no ip redirection
no ip unreachable
no ip proxy-arp
penetration of the IP stream
stream IP output
inspect the firewall on IP
NAT outside IP
IP virtual-reassembly
automatic duplex
automatic speed
clientmap card crypto
!
wlan-ap0 interface
description of the Service interface module to manage theEmbedded AP
IP unnumbered Vlan1
no ip redirection
no ip unreachable
no ip proxy-arp
penetration of the IP stream
IP virtual-reassembly
ARP timeout 0
!
interface GigabitEthernet0 Wlan
description of the Service interface module to manage theEmbedded AP
switchport mode trunk
!
interface Vlan1
VLAN_1 description $ FW_INSIDE$
IP 10.0.1.1 255.255.255.224
no ip redirection
no ip unreachable
no ip proxy-arp
penetration of the IP stream
IP nat inside
IP virtual-reassembly
IP tcp adjust-mss 1452
!
interface Vlan10
VLAN_10 description $ FW_INSIDE$
IP 10.0.10.1 255.255.255.224
no ip redirection
no ip unreachable
no ip proxy-arp
penetration of the IP stream
IP nat inside
IP virtual-reassembly
IP tcp adjust-mss 1452
!
interface BVI1
Description $FW_INSIDE$
in the form of address IP WAPB dhcp host name
no ip redirection
no ip unreachable
no ip proxy-arp
penetration of the IP stream
no ip-cache cef route
no ip route cache
!
router RIP
version 1
10.0.0.0 network
!
IP local pool vpnpool 197.0.0.1 197.0.0.5
no ip forward-Protocol nd
IP route 0.0.0.0 0.0.0.0 dhcp
IP route 0.0.0.0 0.0.0.0 FastEthernet4 dhcp
IP http server
access-class 2 IP http
local IP http authentication
IP http secure server
!
The dns server IP
IP nat inside source list 1 interface FastEthernet4Overload
IP nat inside source list 2 interface FastEthernet4Overload
IP nat inside source static tcp 10.0.10.3 3389interface FastEthernet4 3389
IP nat inside source static tcp 10.0.10.3 1723interface FastEthernet4 1723
IP nat inside source static tcp 10.0.10.3 80interface FastEthernet4 80
!
record 10.0.10.1
access-list 1 permit 10.0.1.0 0.0.0.31
access-list 2 permit 10.0.10.0 0.0.0.31
access-list 199 permit any one
access-list 199 permit tcp any any eq 1723
access-list 199 permit tcp a whole Workbench
access-list 199 permit udp any any eq 3389
access-list 199 permit udp any any eq ntp
access-list 199 permit udp any any gt 1023
access-list 199 tcp refuse a whole
access-list 199 tcp 10.0.0.0 refuse 0.255.255.255 everything
access-list 199 tcp 172.16.0.0 refuse 0.15.255.255any
access-list 199 tcp 192.168.0.0 refuse 0.0.0.255 any
access-list 199 refuse udp 10.0.0.0 0.255.255.255 everything
access-list 199 refuse udp 172.16.0.0 0.15.255.255any
access-list 199 refuse udp 192.168.0.0 0.0.0.255 any
access-list 199 refuse icmp no echo
access-list 199 deny udp any how any eq 135
access-list 199 deny udp any any eq netbios-ns
access-list 199 deny udp any any eq netbios-ss
access-list 199 deny udp any any eq isakmp
access-list 199 tcp refuse any any eq telnet
access-list 199 tcp refuse any any eq smtp
access-list 199 tcp refuse any any eq nntp
access-list 199 tcp refuse any any eq 135
access-list 199 tcp refuse any any eq 137
access-list 199 tcp refuse any any eq 139
access-list 199 tcp refuse any any eq www
access-list 199 tcp refuse any any eq 443
access-list 199 tcp refuse any any eq 445
access-list 199 refuse an entire ip
not run cdp!
control plan
!
Bridge Protocol ieee 1
1 channel ip bridge
bridge 10 Protocol ieee
IP route 10 bridge
connection of the banner ^ CAuthorized access only!
Unplug IMMEDIATELY if you are not authorizeduser! ^ C
!
Line con 0
no activation of the modem
telnet output transport
line to 0
telnet output transport
line 2
no activation-character
No exec
preferred no transport
transport of entry all
transportation out all
line vty 0 4
access-class 104 in
transport input telnet ssh
!
max-task-time 5000 Planner
Scheduler allocate 4000 1000
Scheduler interval 500
Server NTP 192.43.244.18
endHello
The problem is due to NAT configurations. Please, try the following:
no nat ip within the source list 1 interface FastEthernet4 overload
no nat ip inside the source list 2 interface FastEthernet4 overload
access-list 101 deny ip 10.0.0.0 0.0.255.31 197.0.0.0 0.0.0.7
access-list 101 deny ip 10.0.0.0 0.0.255.31 10.0.0.0 0.0.255.255
access-list 101 permit ip 10.0.0.0 0.0.255.31 all
Internet route map
corresponds to the IP 101
output
IP nat inside source overload map route Internet interface FastEthernet4
This will ensure that the VPN clients can access all internal
resources. However, they will not be able to access to the 10.0.10.3 Server
using its private IP address that you can not use the roadmap, when you use the
keyword "interface." If you have a static IP address assigned to your FastEthernet4
You can then use the interface by the ISP, the configuration below:
access-list 102 refuse host ip 10.0.10.3 197.0.0.0 0.0.0.7
access-list 102 refuse 10.0.10.3 ip host 10.0.0.0 0.0.255.255
access-list 102 permit ip 10.0.10.3 host everything
route server map
corresponds to the IP 101
output
no nat ip inside source static tcp 10.0.10.3 interface FastEthernet4 3389
3389
no nat ip inside the source static tcp 10.0.10.3 1723 interface FastEthernet4
1723
no nat ip inside the 80 tcp static 10.0.10.3 source FastEthernet4 80 interface
IP nat inside source static tcp 10.0.10.3 3389 "FastEthernet4 IP" 3389
route server map
IP nat inside source static tcp 10.0.10.3 1723 "FastEthernet4 ip" 1723
route server map
IP nat inside source static tcp 10.0.10.3 80 'FastEthernet4 ip' 80-route map
Server
I hope this helps.
Kind regards
NT
-
VPN tunnel upward, but no traffic?
I decided to take a Cisco 1800 series router and try to put in place. Up to now I can get out, and everything seems fine. I then tried to configure a VPN tunnel between this router and a sonicwall router secure.
Now the problem is the GUI of SonicWall and Cisco say that this tunnel is mounted. But I can't access internal networks...
So my cisco LAN is 192.168.11.0 255.255.255.0
and the Sonic Wall is 192.168.1.0 255.255.255.0
They can talk even if the tunnel is up. I was hitting my head, and running through the tutorials and just can not understand.
Here's proof that we have achieved at least the first phase:
inbound esp sas:
spi: 0xD1BC1B8E(3518765966)
transform: esp-256-aes esp-sha-hmac ,
in use settings ={Tunnel, }
conn id: 3003, flow_id: FPGA:3, crypto map: vpn
sa timing: remaining key lifetime (k/sec): (4541007/2298)
IV size: 16 bytes
replay detection support: Y
Status: ACTIVEoutbound esp sas:
spi: 0xAE589C1E(2925042718)
transform: esp-256-aes esp-sha-hmac ,
in use settings ={Tunnel, }
conn id: 3004, flow_id: FPGA:4, crypto map: vpn
sa timing: remaining key lifetime (k/sec): (4541027/2297)
IV size: 16 bytes
replay detection support: Y
Status: ACTIVE
So here's my config: (what Miss me?)
Current configuration : 3972 bytes
!
version 12.4 no service pad
service tcp-keepalives-in service tcp-keepalives-out
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname CompsysRouter
!
boot-start-marker
boot-end-marker
!
enable secret *****************
enable password ***********
!
aaa new-model
!
!
!
aaa session-id common
ip cef
!
!
!
!
no ip domain lookup
ip domain name ********.local
ip inspect name myfw http timeout 3600 ip inspect name myfw tcp timeout 3600 ip inspect name myfw udp timeout 3600 ip inspect name myfw dns timeout 3600 ip auth-proxy max-nodata-conns 3 ip admission max-nodata-conns 3 !
!
crypto pki trustpoint TP-self-signed-1821875492 enrollment selfsigned
subject-name cn=IOS-Self-Signed-Certificate-1821875492 revocation-check none
rsakeypair TP-self-signed-1821875492 !
!
crypto pki certificate chain TP-self-signed-1821875492 certificate self-signed 01 30820245 308201AE A0030201 02020101 300D0609 2A864886 F70D0101 04050030
31312F30 2D060355 04031326 494F532D 53656C66 2D536967 6E65642D 43657274
69666963 6174652D 31383231 38373534 3932301E 170D3130 31323130 32333433
35325A17 0D323030 31303130 30303030 305A3031 312F302D 06035504 03132649
4F532D53 656C662D 5369676E 65642D43 65727469 66696361 74652D31 38323138
37353439 3230819F 300D0609 2A864886 F70D0101 01050003 818D0030 81890281
8100CC57 E44AB177 3594C4C7 E88B1A4F CE4FD392 87CDB75C 2A6A6B1A 87D10791
0134F1FC 54A84BB6 08A40213 35B9DD0A FD813D2F 1C778D01 3F8EBEB0 C4793850
F52F7906 FDBC56A5 A4829AC5 4180DDA7 F54E3AAD DD1D4537 F1F19F11 9AE8A8A0
91C98934 233CF608 1447DA83 41B09E55 4A0FF674 8D060945 07D3F3F9 8EA7B412
5FD30203 010001A3 6D306B30 0F060355 1D130101 FF040530 030101FF 30180603
551D1104 11300F82 0D436F6D 70737973 526F7574 6572301F 0603551D 23041830
168014DC A9938F71 7CCF0E6D 8BC5DFA5 033DD7E4 0F605130 1D060355 1D0E0416
0414DCA9 938F717C CF0E6D8B C5DFA503 3DD7E40F 6051300D 06092A86 4886F70D
01010405 00038181 00148C2F AA7CA155 463B56F2 324FE1ED 3682E618 75E3048F
93E1EA61 3305767A FA93567B AA93B107 83A2F3D6 8F773779 E6BF0204 DC71879A
5F7FC07F 627D8444 48781289 7F8DC06A BC9057B1 4C72AE1F B64284BE 94C6059C
7B6B8A5D 83375B86 3054C760 961E8763 91767604 5E0E0CE3 3736133A E51ACF26
14F3C7C5 60E08BE3 88 quit
username jdixon secret 5 $*****************
!
!
ip ssh time-out 60 ip ssh authentication-retries 2 !
!
crypto isakmp policy 1 encr aes 256 authentication pre-share
group 2 lifetime 28800 crypto isakmp key address !
!
crypto ipsec transform-set compsys esp-aes 256 esp-sha-hmac
!
crypto map vpn 10 ipsec-isakmp
set peer set transform-set compsys
match address 101 !
!
!
interface FastEthernet0/0
ip address "LOCAL ROUTER OUTSIDE" 255.255.255.248 ip access-group Inbound in ip nat outside
ip inspect myfw out
ip virtual-reassembly
duplex auto
speed auto
no keepalive
crypto map vpn
!
interface FastEthernet0/1
ip address 192.168.11.1 255.255.255.0 ip nat inside
ip virtual-reassembly
duplex auto
speed auto
!
ip forward-protocol nd
ip route 0.0.0.0 0.0.0.0 !
!
ip http server
ip http authentication local
ip http secure-server
ip nat inside source list 1 interface FastEthernet0/0 overload
ip nat inside source static tcp 192.168.11.55 3389 interface FastEthernet0/0 9999 !
ip access-list extended Inbound
permit icmp any any
permit gre host "REMOTE ROUTER" host "LOCAL ROUTER" permit esp host "REMOTE ROUTER" host "LOCAL ROUTER" permit udp host "REMOTE ROUTER" host "LOCAL ROUTER" eq isakmp
permit ahp host "REMOTE ROUTER" host "LOCAL ROUTER" permit udp host "REMOTE ROUTER" host "LOCAL ROUTER" eq non500-isakmp
permit ip host "REMOTE ROUTER" any
permit tcp any host "LOCAL ROUTER" eq 22 !
access-list 1 permit 192.168.11.0 0.0.0.255 access-list 101 permit ip 192.168.11.0 0.0.0.255 192.168.1.0 0.0.0.255 !
!
!
!
control-plane
!
!
!
line con 0 line aux 0 line vty 0 4 !
scheduler allocate 20000 1000 endNAT exemption is where it is a failure.
Please kindly change to as follows:
access-list 150 deny ip 192.168.11.0 0.0.0.255 192.168.1.0 0.0.0.255
access-list 150 permit ip 192.168.11.0 0.0.0.255 any
IP nat inside source list 150 interface fastethernet0/0 overload
no nat ip within the source list 1 interface fastethernet0/0 overload
Hope that helps.
-
Question about ACL's with the 2621 when using site to site VPN
I set up two site to site vpn. We have an ASA at our headquarters and branches will IOS routers - one is a 1811 and the other 2621. Both are running the latest versions of IOS, respectively. The two VPN site-to-site do not work. I have a list of inbound on the external interfaces of both routers, access that allows only the IP address of the ASA IP traffic. All other traffic is denied. I put NAT overload upward in the typical form, and I use ip outgoing inspection on the same interface, to allow incoming traffic back to surfing the internet. This configuration works very well with the 1811, where all traffic is blocked except traffic IP (IPSEC) coming from the ASA. Guests at our headquarters can reach hosts behind the 1811 and vice versa.
Here's my problem: the 2621 is processing traffic encapsulated on the external interface and block this traffic because it does not match. I know because when I turn on logging / debugging on the 2621, I see inbound traffic blocked by the ACL. Technically, I guess that it does not, but to this interface, the traffic is always encapsulated so I think it fits to this access list and then go to the Cryptography decapsulation card and be sent to the destination host. Just as it does on the 1811. I have not 'wan' t to create another line in the access list for all subnets to Headquarters. Why is not it works the same way as it does on the 1811? Is there something else I need to activate?
------------------------------------------------------------------------
Config of 1811:
!
version 12.4
horodateurs service debug datetime msec
Log service timestamps datetime localtime show-timezone msec
encryption password service
!
hostname BranchVPN1
!
boot-start-marker
boot-end-marker
!
logging buffered 51200 notifications
!
AAA new-model
!
!
AAA authentication login default local
activate the default AAA authentication no
authorization AAA console
AAA authorization exec default local
!
AAA - the id of the joint session
no ip source route
IP cef
!
!
IP inspect the audit trail
inspect the IP dns-timeout 10
inspect the name IP internet udp timeout 30
inspect the name IP internet tcp timeout 30
inspect the name IP internet ftp timeout 30
inspect the name IP internet http timeout 30
inspect the name firewall tcp IP
inspect the name IP firewall udp
inspect the name IP firewall icmp
IP inspect the dns name of the firewall
inspect the name IP firewall ftp
inspect the name IP firewall http
inspect the name IP firewall https
inspect the IP firewall name ftps
property intellectual auth-proxy max-nodata-& 3
property intellectual admission max-nodata-& 3
!
!
IP domain name xxxx
!
!
!
!
username xxxxxxxxxx
!
!
!
class-map correspondence vpn_traffic
police name of group-access game
!
!
VPN policy-map
class vpn_traffic
in line-action police 2000000 37500 pass drop exceeds-action
!
!
!
crypto ISAKMP policy 10
BA aes 256
preshared authentication
Group 2
ISAKMP crypto key address xxxx xxxxxx
ISAKMP crypto keepalive 10
!
life crypto ipsec security association seconds 28800
!
Crypto ipsec transform-set esp - aes 256 esp-sha-hmac xxtransform
!
xxmap 10 ipsec-isakmp crypto map
defined peer xxxx
Set transform-set xxtransform
PFS group2 Set
match the address tunnelnetworks
static inverse-road
!
!
!
interface Loopback0
172.16.99.1 the IP 255.255.255.255
!
interface FastEthernet0/0
Description Connection to Internet (DHCP)
DHCP IP address
IP access-group outside_in in
no ip redirection
no ip unreachable
no ip proxy-arp
inspect the firewall on IP
NAT outside IP
IP virtual-reassembly
automatic duplex
automatic speed
No cdp enable
xxmap card crypto
!
interface FastEthernet0/1
Description of the connection to the local network
address 172.20.1.1 IP 255.255.255.0
no ip redirection
no ip unreachable
no ip proxy-arp
IP nat inside
IP virtual-reassembly
automatic duplex
automatic speed
No cdp enable
VPN service-policy input
!
interface Serial0/0/0
no ip address
Shutdown
No cdp enable
!
interface Serial0/1/0
no ip address
Shutdown
!
IP forward-Protocol ND
IP route 0.0.0.0 0.0.0.0 dhcp
!
no ip address of the http server
local IP http authentication
no ip http secure server
IP nat inside source list nat - acl interface FastEthernet0/0 overload
!
IP nat - acl extended access list
refuse any 10.0.0.0 0.255.255.255 ip
allow an ip
outside_in extended IP access list
allow udp any eq bootps host 255.255.255.255 eq bootpc
allow an ip host (ASA IPADDR)
deny ip any any newspaper
IP extended access list police
deny ip host xxxx any
deny ip any host xxxx
IP 172.20.1.0 allow 0.0.0.255 10.0.0.0 0.255.255.255
tunnelnetworks extended IP access list
permit host 172.16.99.1 ip 10.0.0.0 0.255.255.255
IP 172.20.1.0 allow 0.0.0.255 10.0.0.0 0.255.255.255
!
recording of debug trap
logging source-interface Loopback0
exploitation forest xxxx
access-list 160 note t is
not run cdp
!
!
control plan
!
Banner motd ^ CCAuthorized technician!
^ C
!
Line con 0
line to 0
line vty 0 4
exec-timeout 5 0
Synchronous recording
entry ssh transport
line vty 5 15
exec-timeout 5 0
Synchronous recording
entry ssh transport
!
Scheduler allocate 20000 1000
end------------------------------------------------------------------------
2621 Config:
!
version 12.3
horodateurs service debug datetime msec
Log service timestamps datetime localtime show-timezone msec
encryption password service
!
hostname BranchVPN2
!
boot-start-marker
boot-end-marker
!
logging buffered 51200 notifications
no console logging
!
AAA new-model
!
!
AAA authentication login default local
activate the default AAA authentication no
authorization AAA console
AAA authorization exec default local
AAA - the id of the joint session
IP subnet zero
no ip source route
IP cef
!
!
IP domain name xxxx
!
IP inspect the audit trail
inspect the IP dns-timeout 10
inspect the name IP internet udp timeout 30
inspect the name IP internet tcp timeout 30
inspect the name IP internet ftp timeout 30
inspect the name IP internet http timeout 30
inspect the name firewall tcp IP
inspect the name IP firewall udp
inspect the name IP firewall icmp
inspect the name IP firewall ftp
inspect the name IP firewall http
Max-events of po verification IP 100
!
!
!
!
!
!
!
!
!
!
!
!
username xxxxxxxxxxxx
!
!
!
class-map correspondence vpn_traffic
police name of group-access game
!
!
VPN policy-map
class vpn_traffic
in line-action police 2000000 37500 pass drop exceeds-action
!
!
!
crypto ISAKMP policy 10
BA aes 256
preshared authentication
Group 2
ISAKMP crypto key address xxxx xxxxx
ISAKMP crypto keepalive 10
!
life crypto ipsec security association seconds 28800
!
Crypto ipsec transform-set esp - aes 256 esp-sha-hmac xxtransform
!
xxmap 10 ipsec-isakmp crypto map
defined peer xxxx
Set transform-set xxtransform
PFS group2 Set
match the address tunnelnetworks
reverse-road remote-peer
!
!
!
!
interface Loopback0
172.16.99.2 the IP 255.255.255.255
!
interface FastEthernet0/0
Description Connection to Internet (DHCP)
DHCP IP address
IP access-group outside_in in
no ip redirection
no ip unreachable
no ip proxy-arp
NAT outside IP
inspect the firewall on IP
automatic duplex
automatic speed
No cdp enable
xxmap card crypto
!
interface Serial0/0
no ip address
Shutdown
No cdp enable
!
interface FastEthernet0/1
Description of the connection to the local network
IP 172.20.2.1 255.255.255.0
no ip redirection
no ip unreachable
no ip proxy-arp
IP nat inside
automatic duplex
automatic speed
No cdp enable
VPN service-policy input
!
interface Serial0/1
no ip address
Shutdown
No cdp enable
!
IP nat inside source list nat - acl interface FastEthernet0/0 overload
no ip address of the http server
local IP http authentication
no ip http secure server
IP classless
IP route 0.0.0.0 0.0.0.0 dhcp
!
!
!
IP nat - acl extended access list
refuse any 10.0.0.0 0.255.255.255 ip
allow an ip
outside_in extended IP access list
allow udp any eq bootps host 255.255.255.255 eq bootpc
allow an ip host (ASA IPADDR)
deny ip any any newspaper
IP extended access list police
deny ip host xxxx any
deny ip any host xxxx
IP 172.20.2.0 allow 0.0.0.255 10.0.0.0 0.255.255.255
tunnelnetworks extended IP access list
permit host 172.16.99.2 ip 10.0.0.0 0.255.255.255
IP 172.20.2.0 allow 0.0.0.255 10.0.0.0 0.255.255.255
recording of debug trap
logging source-interface Loopback0
exploitation forest xxxx
not run cdp
!
!
!
!
!
Banner motd ^ CCCAuthorized technician!
^ C
!
Line con 0
line to 0
line vty 0 4
exec-timeout 5 0
Synchronous recording
entry ssh transport
line vty 5 15
exec-timeout 5 0
Synchronous recording
entry ssh transport
!
!
endPlease check if this helps:
http://www.Cisco.com/en/us/docs/iOS/12_3t/12_3t8/feature/guide/gt_crpks.html
Federico.
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