How to prohibit remote access vpn client to use the local DNS server
Hello
I'm on ASA5505 remote access vpn configuration.
Everything works fine so far, except when the client got connected, he always used the local DNS server provided by the ISP. How can I force the customer to use the DNS server configured on ASA?
Thank you.
Kind regards
The command "Activate dns split-tunnel-all" is supported only on SSL VPN and VPN IKEv2. Since you're using IKEv1, this command is not supported.
Here's the order reference:
http://www.Cisco.com/en/us/docs/security/ASA/asa82/command/reference/S8.html#wp1533793
You configure no split tunnel? If you are, then you need to configure "tunnelall" split tunnel policy, and that will force the dns resolution and everything else through the VPN tunnel.
Tags: Cisco Security
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!
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hostname horse
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ins-guard
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interface GigabitEthernet0/0
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interface GigabitEthernet0/1
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authentication crack
aes-256 encryption
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authentication rsa - sig
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aes-256 encryption
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aes-192 encryption
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IKEv1 crypto policy 70
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IKEv1 crypto policy 80
authentication rsa - sig
aes encryption
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IKEv1 crypto policy 90
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aes encryption
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IKEv1 crypto policy 100
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3des encryption
sha hash
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IKEv1 crypto policy 110
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3des encryption
sha hash
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IKEv1 crypto policy 120
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authentication crack
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IKEv1 crypto policy 150
preshared authentication
the Encryption
sha hash
Group 2
life 86400
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track 10 rtr 100 accessibility
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Telnet 192.168.202.0 255.255.255.0 inside
Telnet timeout 5
SSH 192.168.202.0 255.255.255.0 inside
SSH 192.168.200.0 255.255.255.0 inside
SSH 0.0.0.0 0.0.0.0 outdoors
SSH timeout 15
SSH group dh-Group1-sha1 key exchange
Console timeout 0
management-access inside
a basic threat threat detection
Statistics-list of access threat detection
no statistical threat detection tcp-interception
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internal group vpntunnel strategy
Group vpntunnel policy attributes
Ikev1 VPN-tunnel-Protocol
Split-tunnel-policy tunnelspecified
value of Split-tunnel-network-list vpntunnel_splitTunnelAcl
field default value green.com
internal vpntunnell group policy
attributes of the strategy of group vpntunnell
Ikev1 VPN-tunnel-Protocol
Split-tunnel-policy tunnelspecified
value of Split-tunnel-network-list gbnlvpntunnell_splitTunnelAcl
field default value green.com
Green user name encrypted BoEFKkDtbnX5Uy1Q privilege 15 password
attributes of user name THE
VPN-group-policy gbnlvpn
tunnel-group vpntunnel type remote access
tunnel-group vpntunnel General attributes
address VPNPOOL pool
strategy-group-by default vpntunnel
tunnel-group vpntunnel ipsec-attributes
IKEv1 pre-shared-key *.
type tunnel-group vpntunnell remote access
tunnel-group vpntunnell General-attributes
address VPNPOOL2 pool
Group Policy - by default-vpntunnell
vpntunnell group of tunnel ipsec-attributes
IKEv1 pre-shared-key *.
!
class-map inspection_default
match default-inspection-traffic
!
!
type of policy-card inspect dns migrated_dns_map_1
parameters
maximum message length automatic of customer
message-length maximum 512
Policy-map global_policy
class inspection_default
inspect the migrated_dns_map_1 dns
inspect the ftp
inspect h323 h225
inspect the h323 ras
inspect the rsh
inspect the rtsp
inspect esmtp
inspect sqlnet
inspect the skinny
inspect sunrpc
inspect xdmcp
inspect the sip
inspect the netbios
inspect the tftp
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global service-policy global_policy
context of prompt hostname
no remote anonymous reporting call
call-home
Profile of CiscoTAC-1
no active account
http https://tools.cisco.com/its/service/oddce/services/DDCEService destination address
email address of destination [email protected] / * /
destination-mode http transport
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Subscribe to alert-group environment
Subscribe to alert-group monthly periodic inventory
monthly periodicals to subscribe to alert-group configuration
daily periodic subscribe to alert-group telemetry
Cryptochecksum:7c1b1373bf2e2c56289b51b8dccaa565
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"crypto isakmp nat-traversal 30.
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Remote access VPN users unable to see local lan or internet
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Cryptochecksum: dd11079f e4fe7597 4a8657ba 1e7b287f
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!
ASA Version 9.0 (3)
!
CP-ASA-TOR1 hostname
activate m.EmhnDT1BILmiAY encrypted password
names of
local pool CPRAVPN 10.10.60.1 - 10.10.60.40 255.255.255.0 IP mask
!
interface Ethernet0/0
nameif outside
security-level 0
IP 63.250.109.211 255.255.255.248
!
interface Ethernet0/1
nameif inside
security-level 100
10.10.10.254 IP address 255.255.255.0
!
interface Ethernet0/2
Shutdown
No nameif
no level of security
no ip address
!
interface Ethernet0/3
Shutdown
No nameif
no level of security
no ip address
!
interface Management0/0
management only
nameif management
security-level 100
IP 192.168.1.1 255.255.255.0
!
passive FTP mode
the local object of net network
10.10.10.0 subnet 255.255.255.0
net remote object network
10.10.1.0 subnet 255.255.255.0
network of the NETWORK_OBJ_10.10.10.0_24 object
10.10.10.0 subnet 255.255.255.0
network of the NETWORK_OBJ_10.10.60.0_26 object
255.255.255.192 subnet 10.10.60.0
Outside_1_cryptomap to access extended list ip 10.10.10.0 allow 255.255.255.0 net object / distance
CPRemoteVPN_splitTunnelAcl list standard access allowed 10.10.10.0 255.255.255.0
pager lines 24
Enable logging
asdm of logging of information
Outside 1500 MTU
Within 1500 MTU
management of MTU 1500
no failover
ICMP unreachable rate-limit 1 burst-size 1
ASDM image disk0: / asdm-731 - 101.bin
don't allow no asdm history
ARP timeout 14400
no permit-nonconnected arp
NAT (inside, outside) local static source net net-local destination static net distance net-distance
NAT (inside, outside) static source NETWORK_OBJ_10.10.10.0_24 NETWORK_OBJ_10.10.10.0_24 NETWORK_OBJ_10.10.60.0_26 NETWORK_OBJ_10.10.60.0_26 non-proxy-arp-search of route static destination
!
NAT (inside, outside) source after-service dynamic automatic one interface
Route outside 0.0.0.0 0.0.0.0 63.250.109.209 1
Timeout xlate 03:00
Pat-xlate timeout 0:00:30
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
identity of the user by default-domain LOCAL
Enable http server
http 192.168.1.0 255.255.255.0 management
http 10.10.10.0 255.255.255.0 inside
No snmp server location
No snmp Server contact
Server enable SNMP traps snmp authentication linkup, linkdown warmstart of cold start
Crypto ipsec transform-set ikev1 SHA-ESP-3DES esp-3des esp-sha-hmac
Crypto ipsec transform-set ikev1 ESP-3DES-MD5-esp-3des esp-md5-hmac
Crypto ipsec transform-set ikev1 esp ESP-DES-MD5-esp-md5-hmac
Crypto ipsec transform-set ikev1 ESP-AES-128-SHA aes - esp esp-sha-hmac
Crypto ipsec transform-set ikev1 ESP-AES-192-SHA esp-aes-192 esp-sha-hmac
Crypto ipsec transform-set ikev1 ESP-AES-128-MD5-esp - aes esp-md5-hmac
Crypto ipsec transform-set ikev1 ESP-AES-192-MD5 esp-aes-192 esp-md5-hmac
Crypto ipsec transform-set ikev1 ESP-AES-256-SHA esp-aes-256 esp-sha-hmac
Crypto ipsec transform-set ikev1 ESP-AES-256-MD5 esp-aes-256 esp-md5-hmac
Crypto ipsec transform-set ikev1 ESP-DES-SHA esp - esp-sha-hmac
Crypto ipsec transform-set ikev1 ESP-AES-128-SHA-TRANS-aes - esp esp-sha-hmac
Crypto ipsec ikev1 transform-set ESP-AES-128-SHA-TRANS mode transit
Crypto ipsec transform-set ikev1 ESP-AES-128-MD5-TRANS-aes - esp esp-md5-hmac
Crypto ipsec ikev1 transform-set ESP-AES-128-MD5-TRANS mode transit
Crypto ipsec transform-set ikev1 ESP-AES-192-SHA-TRANS esp-aes-192 esp-sha-hmac
Crypto ipsec ikev1 transform-set ESP-AES-192-SHA-TRANS mode transit
Crypto ipsec transform-set ikev1 ESP-AES-192-MD5-TRANS esp-aes-192 esp-md5-hmac
Crypto ipsec ikev1 transform-set ESP-AES-192-MD5-TRANS mode transit
Crypto ipsec transform-set ikev1 ESP-AES-256-SHA-TRANS esp-aes-256 esp-sha-hmac
Crypto ipsec ikev1 transform-set ESP-AES-256-SHA-TRANS mode transit
Crypto ipsec transform-set ikev1 ESP-AES-256-MD5-TRANS esp-aes-256 esp-md5-hmac
Crypto ipsec ikev1 transform-set ESP-AES-256-MD5-TRANS mode transit
Crypto ipsec transform-set ikev1 ESP-3DES-SHA-TRANS esp-3des esp-sha-hmac
Crypto ipsec ikev1 transform-set ESP-3DES-SHA-TRANS mode transit
Crypto ipsec transform-set ikev1 ESP-3DES-MD5-TRANS esp-3des esp-md5-hmac
Crypto ipsec ikev1 transform-set ESP-3DES-MD5-TRANS mode transit
Crypto ipsec transform-set ikev1 ESP-DES-SHA-TRANS esp - esp-sha-hmac
Crypto ipsec ikev1 transform-set ESP-DES-SHA-TRANS mode transit
Crypto ipsec transform-set ikev1 ESP-DES-MD5-TRANS esp - esp-md5-hmac
Crypto ipsec ikev1 transform-set ESP-DES-MD5-TRANS mode transit
Crypto ipsec ikev2 ipsec-proposal OF
encryption protocol esp
Esp integrity sha - 1, md5 Protocol
Crypto ipsec ikev2 proposal ipsec 3DES
Esp 3des encryption protocol
Esp integrity sha - 1, md5 Protocol
Crypto ipsec ikev2 ipsec-proposal AES
Esp aes encryption protocol
Esp integrity sha - 1, md5 Protocol
Crypto ipsec ikev2 ipsec-proposal AES192
Protocol esp encryption aes-192
Esp integrity sha - 1, md5 Protocol
Crypto ipsec ikev2 AES256 ipsec-proposal
Protocol esp encryption aes-256
Esp integrity sha - 1, md5 Protocol
Crypto ipsec pmtu aging infinite - the security association
crypto dynamic-map SYSTEM_DEFAULT_CRYPTO_MAP 65535 pfs Group1 set
crypto dynamic-map SYSTEM_DEFAULT_CRYPTO_MAP 65535 define ikev1 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
card crypto Outside_map 1 corresponds to the address Outside_1_cryptomap
card crypto Outside_map 1 set pfs Group1
card crypto Outside_map 1 set peer 209.171.34.91
card crypto Outside_map 1 set transform-set ESP-3DES-SHA ikev1
card crypto Outside_map 1 set ikev2 AES256 AES192 AES 3DES ipsec-proposal OF
card crypto Outside_map 65535-isakmp dynamic ipsec SYSTEM_DEFAULT_CRYPTO_MAP
Outside_map interface card crypto outside
trustpool crypto ca policy
IKEv2 crypto policy 1
aes-256 encryption
integrity sha
Group 2 of 5
FRP sha
second life 86400
IKEv2 crypto policy 10
aes-192 encryption
integrity sha
Group 2 of 5
FRP sha
second life 86400
IKEv2 crypto policy 20
aes encryption
integrity sha
Group 2 of 5
FRP sha
second life 86400
IKEv2 crypto policy 30
3des encryption
integrity sha
Group 2 of 5
FRP sha
second life 86400
IKEv2 crypto policy 40
the Encryption
integrity sha
Group 2 of 5
FRP sha
second life 86400
Crypto ikev1 allow outside
IKEv1 crypto policy 10
preshared authentication
3des encryption
sha hash
Group 2
life 86400
Telnet timeout 5
SSH timeout 5
Console timeout 0
management of 192.168.1.2 - dhcpd address 192.168.1.254
enable dhcpd management
!
a basic threat threat detection
Statistics-list of access threat detection
no statistical threat detection tcp-interception
internal CPRemoteVPN group strategy
attributes of Group Policy CPRemoteVPN
Server DNS 10.10.10.12 value
L2TP ipsec VPN-tunnel-Protocol ikev1, ikev2
value of Split-tunnel-network-list CPRemoteVPN_splitTunnelAcl
carepath.local value by default-field
Split-dns value carepath.ca
activate dns split-tunnel-all
no method of MSIE-proxy-proxy
the address value CPRAVPN pools
roys jjiV7E.dmZNdBlFQ encrypted password privilege 0 username
roys username attributes
VPN-group-policy CPRemoteVPN
tunnel-group 209.171.34.91 type ipsec-l2l
IPSec-attributes tunnel-group 209.171.34.91
IKEv1 pre-shared-key *.
type tunnel-group CPRemoteVPN remote access
attributes global-tunnel-group CPRemoteVPN
address CPRAVPN pool
Group Policy - by default-CPRemoteVPN
IPSec-attributes tunnel-group CPRemoteVPN
IKEv1 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 esmtp
inspect sqlnet
inspect the skinny
inspect sunrpc
inspect xdmcp
inspect the sip
inspect the netbios
inspect the tftp
Review the ip options
!
global service-policy global_policy
context of prompt hostname
no remote anonymous reporting call
Cryptochecksum:dd11079fe4fe75974a8657ba1e7b287f: end
Hello
A couple of things set this:
-crypto isakmp nat-traversal 20
-management-access inside
Can you run a packet tracer and attach it here, to see what are the phases that crosses the package.
David Castro,
Concerning
-
Remote access VPN without certificate
Hi all
I want to deploy remote access VPN to ASA using Cisco anyconnect version 5512 customer secure mobility 3.1.05152. However, it must be a valid certificate of a CA such as verisign, entrust...
Is - it there anyway that I can use the certificate auto-signer? Thank you for helping me!
Hi Harry,.
I think it would always be possible to configure the VPN just with simple authentication AAA.
In my opinion you just set up your client to check worthy of trust of the certificate installed on your ASA.
Please uncheck as on sccreenshot:
Thank you
Jan
-
Remote access VPN group name and password
Hi guys,.
Can someone tell me please the command to display a remote access VPN group name and the password on a firewall version 8.0 of ASA? Any help will be greatly appreciated.
Thank you
Lake
Remote VPN IPsec IKEv1 access are listed as groups of tunnel. If you enter
more system:running-config | b tunnel-groupYou can see the config sections (starting with the first mention of the tunnel-group) as well as the pre-shared key ikev1 plaintext String.
-
Hello!
I have 9.1 (3) version of Cisco ASA with remote access VPN set UP on the outside interface. When the user connects to the Internet on the outside interface, it works well. My goal is to allow the connection of all other interfaces (inside the dmz and etc.) to the outside interface. Cisco ASA allows to do? Order to packet - trace output is less to:
MSK-hq-fw1 # packet - trace entry inside tcp 10.10.10.1 14214 1.1.1.2 443
Phase: 1
Type:-ROUTE SEARCH
Subtype: entry
Result: ALLOW
Config:
Additional information:
developed 1.1.1.2 255.255.255.255 identity
Phase: 2
Type:-ROUTE SEARCH
Subtype: entry
Result: ALLOW
Config:
Additional information:
developed 1.1.1.2 255.255.255.255 identity
Result:
input interface: inside
entry status: to the top
entry-line-status: to the top
the output interface: NP identity Ifc
the status of the output: to the top
output-line-status: to the top
Action: drop
Drop-reason: (headwall) No. road to host
Hello
Well, you can of course turn VPN on other interfaces, but to be honest, I never even tried to set up the VPN it otherwise than of multiple multiple external interfaces in the case of the ISP and in this case only for testing purposes.
Some things related to the ASA are well known but not well documented.
The official document that I can remember: this is the following (which only refers to this limitation regarding the ICMP)
Note
For security purposes the security appliance does not support far-end interface ping, that is pinging the IP address of the outside interface from the inside network.
Source (old configuration guide):
-Jouni
-
How to use ACS 5.2 to create a static ip address user for remote access VPN
Hi all
I have the problem. Please help me.
Initially, I use ACS 4.2 to create the static ip address for VPN remote access user, it's easy, configuration simply to the user defined > address assignment IP Client > assign the static IP address, but when I use ACS 5.2 I don't ' t know how to do.
I'm trying to add the IPv4 address attribute to the user to read "how to use 5.2 ACS", it says this:
1Ajouter step to attribute a static IP address to the user attribute dictionary internal:
Step 2select System Administration > Configuration > dictionaries > identity > internal users.
Step 3click create.
Static IP attribute by step 4Ajouter.
5selectionnez users and identity of the stage stores > internal identity stores > users.
6Click step create.
Step 7Edit static IP attribute of the user.
I just did, but this isn't a job. When I use EasyVPN client to connect to ASA 5520, user could the success of authentication but will not get the static IP I set up on internal users, so the tunnel put in place failed. I'm trying to configure a pool of IP on ASA for ACS users get the IP and customer EasyVPN allows you to connect with ASA, everything is OK, the user authenticates successed.but when I kill IP pool coufigurations and use the "add a static IP address to the user 'configurations, EzVPN are omitted.
so, what should I do, if anyboby knows how to use ACS 5.2 to create a user for ip address static for remote access VPN, to say please.
Wait for you answer, no question right or not, please answer, thank you.
There are a few extra steps to ensure that the static address defined for the user is returned in the Access-Accept. See the instuctions in the two slides attached
-
Access PIX using SSH when connected remotely with VPN client
Hello
I think that this should be a fairly simple for someone to sort for me - I'm new to PIX configuration If Yes please excuse my stupidity!
I changed the config on our PIX to allow only access via SSH (rather than via telnet as it was previously configured)
Now, everything works fine when I'm in the office - I can connect to the PIX using SSH without any problem.
However, if I work from home and connect to the office using my VPN client (IPSEC tunnel ends on the PIX firewall itself) I find that I can not connect to the PIX.
I have configured the PIX to access ssh on the office LAN subnet and the client pool of IP addresses used for VPN connections by using the following commands:
SSH 172.64.10.0 255.255.255.0 inside
SSH 192.28.161.0 255.255.255.0 inside
where the 1st line is reference to the office's LAN, which works very well, and the 2nd line denotes the IP address pool configured on the PIX for VPN access.
Can someone tell me how to fix this? I have the feeling that its something pressing!
Thank you
Neil
Try the command "management-access to the Interior.
-
Remote access VPN VPN Ping from ASA clients
I would like to know if it is normal to not being able to traceroute or ping for VPN clients connected from the ASA command line? The VPN client and the connection works well at the moment. I can't ping / connect to the VPN and vice versa internal hosts. I can't ping however the ASA VPN client IP address himself well. I'm so split tunnel but that seems to work correctly based on the determination of route I ran.
Can I have an IKEv1 and IKEv2 for VPN IPSEC configuration? I try to keep the IKEv1 VPN for the legacy Cisco VPN client while I began to roll on the AnyConnect IKEv2 client. Just end up creating a new configuration of VPN for the AnyConnect VPN (easier)?
What is the purpose of the injection of the route the other way around? It seems to be against intuitive. I was hoping it say for VPN DHCP pool 32 come to me so I would not add static routes on my heart to point to the ASA for these ranges. This ASA is reserved for the VPN firewall not this traffic is not normally head to it. Right now I have just the static route for the 24 I use in the DHCP pool on carrots. I have of course the possibility to redistribute the beach many other ways with EIGRP / OSPF / RIP it seems to me that RRI was a nice way to do, but it doesn't seem to be.
It probably all comes from me probably do not understand exactly how bits to pass through the firewall to the actual machine of the VPN client. You see only not an interface layer 3 for part of the ASA in the tunnel, according to me, is part of what confuses me.
Basically, I followed this guide and added split tunnel and aaa via RADIUS which seem to work well. I can't emphasize enough that for all intent and purposes, it seems that the VPN works as it should now. Wait for this time I broke it a few hours while I was playing with various other orders lol.
Thank you
Tim
Reference:
ASA 5505 (base right now, license #labgear) 9.2 (4) runningIt is normal to not be able to ping remote VPN clients to the ASA's. To be able to do outside the ASA IP address must be included in the field of encryption, which is not normally.
Yes, you can use IKEv1 and IKEv2 at the same time. However if you change consider using SSL. It is best taken in charge and less painful.
If you choose to ignore this advice, then I would create a new IKEv2 VPN rather than modify the existing and then migrate users through him.
The reverse route injection does exactly what you describe. They appear as static routes on the SAA, you will then need to redistribute in any routing protocol you like. I wouldn't normally use for traffic of users, but for the traffic of a site when managing more complex failover scenarios.
I recommend to stick to the single 24 static road in your kernel.
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