Questions tagged [cisco]

Cisco is a provider of switches and routers to commercial consumers. Cisco devices run IOS or NX-OS operating systems. This is a generic tag to be used when no more specific tags are available. See the partial list of tags in the full Tag Wiki.

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CISCO: IPS Stateful Signature in HTTP

I am trying to understand the concept of IPS's stateful (a.k.a composite) signatures. While reading CCNA Security I found this quotation: Example of stateful signature: Often, Network-based IPS ...
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186 views

cisco router not nat to outside network

im trying to get PC access to outside network without any natting to outside network in router in stick config, problem is im unable to ping from outside network 10.130.1.0 to inside netwrok 10.1.10....
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How to monitor the mirror port with zabbix?

In a cisco switch we have a mirror port. I can monitor up/down of this port in zabbix by snmp (and use OID) but always Zabbix graph show that port is down while I sure that port is up.
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Can't entablish VPN IKEv2 conection from Google Cloud Platform to FirePower CISCO

I hope you guys can help me with something that drives me crazy. On this page, Google says the protocols and cipher they accept to establish the VPN connection: https://cloud.google.com/network-...
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Change Enterprise Firmware to MMP license - Cisco 8841

We are having VoIP phone(Cisco 8841) which is having Enterprise Firmware and it connected to ring central. we need to convert it to MMP Firmware. We searched and we found out the procedure there they ...
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Any FWbuilder alternatives? [closed]

I need to manage Cisco ACL rules with GUI instead of command line. It seems like FWbuilder was a great tool for this, however, it is not getting any updates anymore. Maybe someone knows any ...
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Are there better ways to manage ACL rules for Cisco routers? GUI maybe?

Are there any better ways to manage ACL with easier interface? I'm using Cisco ACL rules as firewall. It's hard to manage through command lines. Are there any tools, software, systems that could make ...
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40 views

Equipment required for AWS outpost

Have anybody configured network equipment for AWS outpost? The demarcation point is the patch pannel in AWS rack. Requirment is to configure equipment back from the rack to internet. The rack will be ...
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46 views

GUI Interface for ACL (Cisco)

Are there any interface (GUI) software to manage ACL? Using Cisco ACL, but it's hard to manage with command line. Any ideas? Basically, need a software tool to manage ACL permissions with GUI instead ...
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Direct Cisco AnyConnect VPN to a specific interface on Windows

I have a corporate Cisco VPN that I need to connect to via Cisco AnyConnect. However, when I connect it basically locks down everything. All traffic is forced through that VPN. I can't figure out how ...
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Windows IPSec Xauth PSK with Shrew VPN not working

I've set up a VPN on a friend's home router (It's a FritzBox). I followed some tutorials on doing so, which included changing the default subnet (from 192.168.178.0/24 to something custom) and ...
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Cisco ASA 5555-x firewall

I am running the site to site VPN between to ASA 5555-x firewall over public IP when from our local IP we want to copy the file and ping it work but after a few hours the IPsec session goes down not ...
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initial cisco nexus setup without serial cable

I've never used a cisco switch. On the used 3048t i just got, there's a dedicated management ethernet port on the back, so i was blindly assuming it would just accept a dhcp address and give me ssh, ...
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Why are Cisco access-lists bound to a specific interface?

This might seem like a simple/dumb question, but for me it is not. Please bear in mind, that I'm not a network administrator, so it's not obvious to me. Anyways, straight to the point: Why do I need ...
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Is it possible to filter directly connected networks redistribute with BGP based on a peer basis?

Assume a simplified case in which router R1 is connected to two BGP peers: one eBGP peer and one iBGP peer. Is there a possibility to advertise directly connected routes only to one of them ...
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Unifi specific SFP adapters?

I have a few 10GbE SFP+ devices with Cisco plugs. I need to upgrade my network and am considering a switch from Unifi. Does anyone know if they play well with SFP+ plugs from other brands? Thanks!
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58 views

Traffic not traversing VLAN over multiple hops?

I am configuring a new Cisco edge switch stack, and temporarily I am trunking this stack through another edge switch back to my core switch (no spare fiber pairs to use to trunk directly). This is ...
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Cisco ISE 2.4.x - Unable to reset gui password from the cli

I'm able to login to the cli using an account that is not admin (but has the admin role). This account has the # at the end of the prompt. application reset-passwd ise admin This gives an error ...
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Single isp dual failover links

I'm having a problem trying to configure my cisco 3945 router to use a dual hand-off wan links. Lets say the ISP has provided the below ip addresses where they are doing hsrp at their end ISP EDGE 1 ...
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cisco firepower connection events to be captured and store in linux file

I need to capture cisco connection events in the Linux file which will help to analyze connection events per source IP and destination IP. If the file will be store in the Linux server then ...
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1answer
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How can I Change Password of Cisco (C3560-IPBASEK9-M) Switch with Command Line?

I can make remote (ssh) connection to my Cisco (C3560-IPBASEK9-M) switch on putty and I can log in with username and password. How can I change password -that I use when I log in- on this command line?...
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Is there any alternative of CISCO JTAPI, that monitor SIP call?

I am working with a call monitoring system using CUCM and JTAPI. I can monitor Cisco IP Communicator call, but can't monitor any call from third party SIP client through JTAPI. Following the below ...
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How do I stop STP from blocking ports assigned to different VLANs

I have a spanning tree issue on my Cisco SG500 SMB Switches that I could use some help solving. Here is a diagram of my setup: SW1 (ports 44-47, VLAN 10) connect to port 43 (VLAN 10) on SW2, SW3, SW4,...
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1answer
36 views

Cisco switches LACP, lost connections

I just put up a LACP between two Cisco SG-200 switches. Unfortunately some PCs connected to these switches got problems like lost Postgres connections etc. My configuration is simple: ---------------- ...
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1answer
43 views

Can't get connection over fiber run

Between two server rooms on an office campus I have three pairs of fiber with an interconnect panel in the middle. Two of the three pairs were connected before I started here and are working. I ...
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24 views

Why does the Cisco webui doesn't accept my admin password, even when the serial console does?

I have a new Cisco SG350X (SG350X-48P-K9) switch. After powering it on I have logged in using the web UI with the default admin/cisco password. I have changed the admin password to something else. I'...
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39 views

MAC address timeing out of the Linux bridge

We stumbled upon a weird behaviour (well, everything works according to specifications but it should be somehow tunable and/or I would like to know how to properly set it up) in linux bridge or ...
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67 views

Site to Site VPN between Strongswan and Cisco ASA

I am trying to configure a VPN between a Cisco ASA firewall and Strongswan. From the logs, it looks like Phase 1 is completing without any issue, but phase is giving the following error: "...
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36 views

Computer getting Unable to Identify Network UNLESS Vlan is changed

Question moved from Network Engineering to Server Fault. This is a problem that has long plagued this environment. At seemingly random times (measured generally in months), a computer may suddenly ...
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58 views

High CPU usage on Cisco WS-4900M by multicast(PIM-SM)

Good evening I have a network with few Cisco routers (WS-4900M and 7606(as main core)) on backbone network and different connected to them l3 switches as client access routers, which receives igmp ...
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finger service not getting enabled in my router(cisco packet tracer)

i tried enabling 'ip finger' command in my router, but it isnt' working, someone please help Router#config terminal Enter configuration commands, one per line. End with CNTL/Z. Router(config)#ip ...
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51 views

Cisco cannot access public IP from within lan

I recently set up a very basic cisco setup. Everything works and if I'm on another network i can access my public ip however I cannot access my own public IP when I'm on the LAN. I'm using a very ...
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Replacing legacy Cisco 800 serie router by Cisco RV260

I try to replace a legacy 800 router by a brand new RV260 router. Our configuration is simple: LAN : 192.168.2.0 -> router LAN is 192.168.2.1 WAN : 192.168.1.2 default gateway on 192.168.1.1 -> ...
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25 views

Cisco 7912G ringtone add

I'm curious how can i add ringtones on a Cisco 7912 flashed to SIP. I put to tftp server Ringlist.xml, and ringtones in the / directory. I also set on phone alternate tftp server IP to machine where I ...
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470 views

->% 192.168.2.0 overlaps with FastEthernet0 / 0

I am working within the Cisco Packet Tracer platform. I made all the necessary configurations but when assigning an IP address to my router, I get the error message in title and I do not know how to ...
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Cisco SG switch interface statistic length of time

I am trying to determine the length of time the interface statistic screen is recording for the bytes columns on my Cisco Sg300-52 switch. I went to the cisco website for documentation but the page ...
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26 views

Serial Interface Network Address Decreased by One In EIGRP Configuration In Packet Tracer

I'm trying to implement EIGRP on the following topology The problem is, whenever I assign the network IP to a serial interface in EIGRP, the IP decreases by one. For example, when I use network 197....
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155 views

Cisco ACL to block external DNS queries [RESOLVED]

One of the routers that I administer is getting bombarded with external DNS queries from the internet. This is a network border router which has a DNS server configured. There is an interface facing ...
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67 views

Using 2FA with openconnect

Currently i'm using the following command: echo 'mypassword' | sudo openconnect -b --reconnect-timeout=15 --interface=tun0 --passwd-on-stdin --user=MYNAME --cafile=example/my.pem --certificate=...
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44 views

Cisco IOS ACL to permit inbound

I am struggling to get to grips with the ACL on the 2800 series cisco router. Briefly My topology is R1 > Sw1 > [Server 1, server 2, pc 1] R1 creates a PPPoE connection, that I'm using right now. ...
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194 views

Cisco router configuration for pppoe dhcp and nat

I am trying to set up a cisco 2800 series router in my home lab. yes its old, but cheap enough to play around with. So I am coming up against a problem configuring the router. I can ping out to the ...
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76 views

Is The Cisco AnyConnect licenses shariable between two low-end ASAs?

I have two low-end Cisco ASA 5506-X with bundled Security Plus licenses. These ASAs are just for remote dial-in VPN access for our staff. Now all users using IKEv2 and IPSec/L2TP (IKEv1) connection ...
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47 views

Cisco ISR4431 router randomly reboots

I have a Cisco ISR4431 acting internet edge router that has been randomly rebooting every 5 days or so. When it reboots it takes anywhere from 10-60 minutes before it is back up and network traffic ...
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25 views

FreeRADIUS server not replying with AV-pairs after sucessfull 802.1X authentication?

I am having trouble with 802.1X authentication while using FreeRadius server. I am having a Cisco switch which is connected to windows 7 VM. And on the other end, the switch is connected to the ...
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179 views

How to configure cisco air-cap2602i-e-k9

I can´t access to Cisco AP by http, I have to configure it. After connect to switch, my router (VyOS) show new IP address IP 192.168.1.61 1c:6a:7a:e2:80:63 2020/04/22 10:14:49 MyDHCPServer AP1c6a....
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51 views

Routing policy (control list?) needed for an old Cisco Router

I have a ~15yr old little Cisco 831 connecting a site with multiple networks to the internet. I need to block incoming port-80 (www) and port-443 (ssl) access to one of the internal IP addresses from ...
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1answer
35 views

Do managed switches ping on all VLANs by default?

Amateur network admin here. I'm trying to create a link via VLAN between a VOIP PBX and an internet router. It's a large installation, so there are 4 managed switches between the two endpoints. I ...
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How do you configure access lists to restrict inbound ports while allowing all outbound traffic on a Cisco 2911 router with NAT?

First caveat: I did not design this network. Most of my recent networking experience is with ASAs; configuring NAT & ACLs there is pretty easy and straightforward. In this case, the engineer who ...
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17 views

Cisco Anyconnect failing in windows assigned access user

I'm trying to set up a restricted user using assigned access. This user should only be able to launch cisco anyconnect and remotedesktop. Problem is, that cisco anyconnect creates a copy of ...
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18 views

Can't connect VM's brouser to Internet in GNS3

I have a problem with connection Windows VM to internet in GNS3. I want to get access to the Internet from a browser. I've configured nat and dhcp on cisco router. VM can ping 8.8.8.8, but can't "...

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