Use Talos IP Blacklist on your ASA

Create bash script:

#!/bin/bash
    wget -q https://talosintelligence.com/documents/ip-blacklist
    ipblack=( $(cut -d ';' -f2 ip-blacklist ) )
    echo "conf t"
    for ip in "${ipblack[@]}"
        do
        echo "name $ip TALOS_BLACKLIST_$ip"
    done

    echo "no object-group network TALOS_BLACKLIST"
    echo "object-group network TALOS_BLACKLIST"
    for ip in "${ipblack[@]}"
        do
        echo "network-object host $ip"
    done
    echo "!"
    echo "exit"

Run it, copy-paste output to your ASA:

        ./talos-ipblacklist.sh > talos-blacklist.cfg

Source

Connect to Cisco device with USB cabel on linux

user@computer:~$ dmesg | grep tty
[ 0.088345] printk: console [tty0] enabled
[ 0.418156] serial8250: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = 115200) is a 16550A
[ 5.030307] usb 1-3.1.3: pl2303 converter now attached to ttyUSB0
[86188.149229] pl2303 ttyUSB0: pl2303 converter now disconnected from ttyUSB0
[86271.641530] usb 1-2: pl2303 converter now attached to ttyUSB0
[86796.881771] pl2303 ttyUSB0: pl2303 converter now disconnected from ttyUSB0
[86855.323347] usb 1-4: pl2303 converter now attached to ttyUSB0
[86877.932139] pl2303 ttyUSB0: pl2303 converter now disconnected from ttyUSB0
[86884.784432] usb 1-4: pl2303 converter now attached to ttyUSB0
[87068.706927] pl2303 ttyUSB0: pl2303_set_control_lines – failed: -19
[87068.706937] pl2303 ttyUSB0: error sending break = -19
[87068.707250] pl2303 ttyUSB0: pl2303 converter now disconnected from ttyUSB0
[259915.126314] cdc_acm 1-3.1.3:1.0: ttyACM0: USB ACM device

SSH not working after upgrade

I upgraded ubuntu to focal 20.04 and SSH was unable to negotiate with network devices I tried to ssh on.
Solution was found here, or simpy editing /etc/ssh/ssh_conf by adding following lines to the end of the file:

Ciphers aes128-ctr,aes192-ctr,aes256-ctr,aes128-cbc,3des-cbc
MACs hmac-md5,hmac-sha1,umac-64@openssh.com
KexAlgorithms diffie-hellman-group1-sha1,curve25519-sha256@libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group14-sha1
HostKeyAlgorithms ssh-rsa,ssh-dss